Show that the equations x+y+z = 4, 2x+5y-2z =3, x+7y-7z =5 are not consistent

Answers

Answer 1

Answer:

We can start by using the second equation to eliminate x:

2x + 5y - 2z = 3

2x = -5y + 2z + 3

x = (-5/2)y + z + 3/2

Now we can substitute this expression for x into the first and third equations:

x + y + z = 4

(-5/2)y + z + 3/2 + y + z = 4

(-5/2)y + 2z = 5/2

x + 7y - 7z = 5

(-5/2)y + z + 3/2 + 7y - 7z = 5

(9/2)y - 6z = 7/2

Now we have a system of two equations with two variables, (-5/2)y + 2z = 5/2 and (9/2)y - 6z = 7/2. We can use any method to solve for y and z, such as substitution or elimination. However, we will find that the system is inconsistent, meaning there is no solution that satisfies both equations.

Multiplying the first equation by 9 and the second equation by 5 and adding them, we get:

(-45/2)y + 18z = 45/2

(45/2)y - 30z = 35/2

Adding these two equations, we get:

-12z = 40/2

-12z = 20

z = -5/3

Substituting z = -5/3 into (-5/2)y + 2z = 5/2, we get:

(-5/2)y + 2(-5/3) = 5/2

(-5/2)y - 10/3 = 5/2

(-5/2)y = 25/6

y = -5/12

Substituting y = -5/12 and z = -5/3 into any of the original equations, we get:

x + y + z = 4

x - 5/12 - 5/3 = 4

x = 29/12

Therefore, the solution is (x, y, z) = (29/12, -5/12, -5/3). However, if we substitute these values into any of the original equations, we will find that it does not satisfy the equation. For example:

2x + 5y - 2z = 3

2(29/12) + 5(-5/12) - 2(-5/3) = 3

29/6 - 5/2 + 5/3 ≠ 3

Since there is no solution that satisfies all three equations, the system is inconsistent.

Step-by-step explanation:

Answer 2

Answer:

See below for proof.

Step-by-step explanation:

A system of equations is not consistent when there is no solution or no set of values that satisfies all the equations simultaneously. In other words, the equations are contradictory or incompatible with each other.

Given system of equations:

[tex]\begin{cases}x+y+z = 4\\2x+5y-2z =3\\x+7y-7z =5\end{cases}[/tex]

Rearrange the first equation to isolate x:

[tex]x=4-y-z[/tex]

Substitute this into the second equation to eliminate the term in x:

[tex]\begin{aligned}2x+5y-2z&=3\\2(4-y-z)+5y-2z&=3\\8-2y-2z+5y-2z&=3\\-2y-2z+5y-2z&=-5\\5y-2y-2z-2z&=-5\\3y-4z&=-5\end{aligned}[/tex]

Subtract the first equation from the third equation to eliminate x:

[tex]\begin{array}{cccrcrcl}&x&+&7y&-&7z&=&5\\\vphantom{\dfrac12}-&(x&+&y&+&z&=&4)\\\cline{2-8}\vphantom{\dfrac12}&&&6y&-&8z&=&1\end{aligned}[/tex]

Now we have two equations in terms of the variables y and z:

[tex]\begin{cases}3y-4z=-5\\6y-8z=1\end{cases}[/tex]

Multiply the first equation by 2 so that the coefficients of the variables of both equations are the same:

[tex]\begin{cases}6y-8z=-10\\6y-8z=1\end{cases}[/tex]

Comparing the two equations, we can see that the coefficients of the y and z variables are the same, but the numbers they equate to is different. This means that there is no way to add or subtract the equations to eliminate one of the variables.

For example, if we subtract the second equation from the first equation we get:

[tex]\begin{array}{crcrcl}&6y&-&8z&=&-10\\\vphantom{\dfrac12}-&(6y&-&8z&=&\:\:\;\;\:1)\\\cline{2-6}\vphantom{\dfrac12}&&&0&=&-11\end{aligned}[/tex]

Zero does not equal negative 11.

Since we cannot eliminate the variable y or z, we cannot find a unique solution that satisfies all three equations simultaneously. Therefore, the system of equations is inconsistent.


Related Questions

división of decimals using the number problem

Answers

To divide decimals using the number line method, you can follow these steps:

Draw a number line and place the dividend (the number being divided) at the start of the line.
Determine the divisor (the number you are dividing by) and place it on the number line.
Mark the first quotient (the first answer to the division problem) at the point where the divisor is located on the number line.
Move the dividend to the next point on the number line and mark the next quotient above it.
Continue this process until you have moved the dividend to the end of the number line.
The final quotient is the answer to the division problem.
Here is an example:

Divide 3.6 by 0.6 using the number line method.

Draw a number line and place 3.6 at the start of the line.
Place 0.6 on the number line.
Mark the first quotient at the point where 0.6 is located on the number line. In this case, the first quotient is 6.
Move 3.6 to the next point on the number line (which is 6 units away) and mark the next quotient above it. In this case, the quotient is 6 again.
Continue moving 3.6 along the number line, marking the quotients above it until you reach the end of the line. The final quotient is 6.
Therefore, 3.6 divided by 0.6 is equal to 6.

5
5 points
In A, the m/BAD = 106°. Find the measure of DE
B
3.
E

Answers

In the circle if  ∠BAD is 106 degrees then the measure of arc DE is 74 degrees

In the circle the measure of ∠BAD is 106 degrees

We have to find the measure of the arc DE

∠BAD is equal to ∠CEA because these are vertical angles

106+106=212 degrees

Now let us find the measure of ∠DAE

212 degrees +∠DAE + ∠ABC = 360

212 degrees+∠DAE+∠DAE=360 (∠DAE =∠ABC)

212 degrees+2∠DAE =360

2∠DAE  = 360-212

2∠DAE  = 148

Divide both sides by 2

∠DAE  = 74 degrees

The ∠DAE is equal to measure of arc DE

arc DE = 74 degrees

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The day after a party, 1/2 of the cake remains. If 4 people share the rest of the cake equally, what fraction of the cake does each person get?​

Answers

answer Each person will get 1/8 of a cake.

Step-by-step explanation: 1/2 Divided by 4= 4 = 1 = 1 x 1 = 1 4 2 x 4 = 8

Hadey is planning an advertising blitz for his new amusement park, but
he’s aware that the park will be much more appealing in warm weather
than when it’s rainy and cold. He doesn’t want to try to operate the
park if there won’t be a crowd, so he needs to iron out when exactly to
open and close the park each year. Hadey is a goat, and doesn’t
understand climate change (who does?) so he just uses the most recent
twelve months as a guideline. The temperature in Los Angeles peaked in
2022 on September 9 at around 102°F, followed by a low of about 57°F
approximately 6 months later. Hadey is confident that he’ll get good
turnout as long as the high temp any given day is at least 72°F.
Assuming that the high temperature is periodic, what day should he
open and close the park each year?

Answers

Hadey should open the park when the high temperature consistently reaches or exceeds 72°F and close it when it falls below.

To determine the best day to open and close the park each year, Hadey should consider the temperature patterns based on the given information. The temperature in Los Angeles peaked on September 9 at 102°F and reached a low approximately 6 months later, suggesting a periodic pattern.

To find the optimal opening and closing days, Hadey should look for the days when the high temperature is consistently above 72°F. This would ensure a good turnout for the amusement park. He should open the park when the high temperature consistently reaches or exceeds 72°F and close it when the high temperature consistently falls below this threshold. Using the temperature data from the most recent twelve months, Hadey should analyze the high temperature records for each day and identify the earliest day when the high temperature consistently reaches or exceeds 72°F. This would be the opening day of the park. Similarly, he should find the latest day when the high temperature consistently falls below 72°F, which would be the closing day.

It's important to note that Hadey's approach assumes that temperature patterns will remain consistent in the future. However, climate change and other factors can affect temperature variations, so it would be wise to consider long-term climate trends and consult with meteorological experts to ensure the park's success.

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The graph of y = f(x) is shown.
a) Give the coordinates of the
turning point of the graph.
b) Find the roots of f(x) = 0
Note: Please use a comma between your answers.
c) Find f(0)
-3
-2
4
3-
2-
O
-1-
-2-
-~
2
COL
3
X
s+

Answers

Answer:

a) (1, 4)

b) -1, 3

c) 3

Step-by-step explanation:

The turning point is the point when the function changes direction.

The roots are the x-intercepts.

f(0) is the y-intercept.

What the meaning of statement this?

Answers

The axiom of regularity is a set theory principle which states that every non-empty set C contains an element that is disjoint from C.

Axiom of Regularity

The set theory concept rules that for every non-empty set C there is an element x of C such that x does not intersect C. The regularity axiom aims to establish that no non-empty set will have itself as an element.

The principle which is also called the axiom of foundation is a fundamental concept in set theory and credited to Zermelo–Fraenkel.

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Pls someone help me with this

Answers

Check the picture below.

[tex]\begin{array}{llll} \textit{using the pythagorean theorem} \\\\ c^2=a^2+o^2\implies c=\sqrt{a^2 + o^2} \end{array} \qquad \begin{cases} c=\stackrel{hypotenuse}{AB}\\ a=\stackrel{adjacent}{6}\\ o=\stackrel{opposite}{6} \end{cases} \\\\\\ AB=\sqrt{ 6^2 + 6^2}\implies AB=\sqrt{ 36 + 36 } \implies AB=\sqrt{ 72 }\implies AB=6\sqrt{2}[/tex]

nch realize. 8-2: Find Volume of Cylinders (LMS graded)
8.2.PS-11
Find the volume of the cylinder. Find the volume of a
cylinder with the same radius and double the height.
The volume of the cylinder is
(Type an exact answer in terms of x.)
in.3.
COTT
4 in.
3 in.
(This figure is not to scale.)
Question Hell

Answers

The volume of the cylinder with the same radius and double the height is 2πx²h in³.

To find the volume of a cylinder, we use the formula V = πr²h, where V is the volume, r is the radius, and h is the height.

In this case, we are given a cylinder with a certain radius and height, and we need to find the volume of another cylinder with the same radius but double the height.

Let's assume the radius of the cylinder is x, and the original height is h.

The volume of the original cylinder is V = πx²h.

Now, we need to find the volume of the cylinder with the same radius (x) but double the height (2h).

The volume of this cylinder is V' = πx²(2h) = 2πx²h.

So, the volume of the second cylinder is twice the volume of the first cylinder.

Therefore, the volume of the second cylinder is 2 times the volume of the first cylinder, which can be expressed as 2V = 2πx²h.

Therefore, the volume of the cylinder with the same radius and double the height is 2πx²h in³.

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Statistics question

Answers

Considering the given information, we fail to reject the null hypothesis that the proportion of men who own cats is less than or equal to 23% at the 0.10 significance level.

How did we arrive at this assertion?

The null and alternative hypotheses are as follows:

H o: p ≤ 0.23 (proportion of men who own cats is less than or equal to 23%)

H a: p > 0.23 (proportion of men who own cats is larger than 23%)

The test is right-tailed because the alternative hypothesis states that the proportion is larger than 23%.

Based on a sample of 40 people, with 15% of them owning cats, we can calculate the p-value.

To find the p-value, we need to use the binomial distribution and calculate the probability of observing a result as extreme or more extreme than the one obtained under the null hypothesis.

Let's calculate the p-value:

p = 0.15 (proportion of men in the sample who own cats)

n = 40 (sample size)

p-value = P(X ≥ 0.15 x 40) = P(X ≥ 6)

Using a binomial calculator or software, we can find that P(X ≥ 6) is approximately 0.162.

Since the p-value (0.162) is greater than the significance level of 0.10, we fail to reject the null hypothesis.

Therefore, based on the given information, we fail to reject the null hypothesis that the proportion of men who own cats is less than or equal to 23% at the 0.10 significance level.

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FCPS Bookmarks
Launch realize. 8-2: Find Volume of Cylinders (LMS graded)
8.2.PS-13
The cylinder shown has a volume of 824 cubic inches.
a. What is the radius of the cylinder? Use 3.14 for .
b. If the height of the cylinder is changed, but the volume
stays the same, then how will the radius change? Explain.
a. The radius of the cylinder is about 8.2 in³.
(Type an integer or decimal rounded to the nearest tenth as needed.)
10.7 in.
Question Help

Answers

To find the radius of the cylinder, we can use the formula for the volume of a cylinder:

V = πr²h

Given that the volume is 824 cubic inches, we can rearrange the formula to solve for the radius:

824 = πr²h

Since the height is not given, we cannot find the exact radius. However, we can still determine the relationship between the height and radius if the volume remains the same.

b. If the height of the cylinder is changed, but the volume stays the same, the radius will change inversely proportional to the height. This means that as the height increases, the radius will decrease, and vice versa. This relationship ensures that the volume remains constant.

Therefore, we cannot determine the exact radius without knowing the height, but we can conclude that the radius and height have an inverse relationship.

High school students are pledging hours to help clean up streets and parks around their neighborhood. Tim pledged 27 hours to help clean 3 parks and 6 streets. Susan pledged 42 hours to help clean 6 parks and 8 streets. How long are either of them planning to clean each street and park?

Learning Goal: I can use the substitution method to solve linear systems of equations

Answers

They plan to clean the street for 3 hours.

They plan to clean the park for 3 hours.

How many hours do they plan to clean the street and the park?

The first step is to set up a set of linear equations that describe the information in the question.

3p + 6s = 27 equation 1

6p + 8s = 42 equation 2

Where:

p = number of hours spent cleaning one park

s = number of hours spent cleaning on street

In order to determine the value of s, take the following steps:

Multiply equation 1 by 2

6p + 12s = 54 equation 3

Subtract equation 2 from equation 3

4s = 12

Divide both sides of the equation by 4

s = 12 / 4

s = 3 hours

Substitute for s in equation 1:

3p + 6(3) = 27

3p + 18 = 27

3p = 27 - 18

3p = 9

p = 9/3

p = 3

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how do u do this and give me the answer 16q2–8q+1

Answers

Answer:

[tex]\huge\boxed{\sf (4q - 1)\²}[/tex]

Step-by-step explanation:

Given expression:

= 16q² - 8q + 1

We can also write it as:

= (4q)² - 2(4q)(1) + (1)²

Using formula:

a² - 2ab + b² = (a - b)²

So, the above expression becomes:

= (4q - 1)²

[tex]\rule[225]{225}{2}[/tex]

formula for percentage of growth

Answers

Answer:

How to calculate growth rate percentage?

To calculate the percentage growth rate, use the basic growth rate formula:

Subtract the original from the new value and divide the results by the original value. To turn that into a percent increase, multiply the results by 100.

what is the area of the triangle whose vertices are A (0, 0) B(-10, 0) and C(0, -6)

Answers

We can find the area of the triangle using the formula:

A = 1/2 * base * height

where the base is the distance between points A and B, and the height is the distance between point C and the line containing points A and B.

The distance between points A and B is:

AB = |-10 - 0| = 10

The line containing points A and B is the x-axis, so the height of the triangle is the y-coordinate of point C, which is 6 units away from the x-axis. Therefore, the height is:

h = 6

The area of the triangle is:

A = 1/2 * base * height
A = 1/2 * 10 * 6
A = 30 square units

Therefore, the area of the triangle whose vertices are A (0, 0), B(-10, 0), and C(0, -6) is 30 square units.

What’s the 6th term of 23,92,368

Answers

Answer:

23552

Step-by-step explanation:

23, 92, 368...   is a geometric sequence.

first term = a = 23

common ratio = r = 2 term ÷ first term = 92 ÷ 23 = 4

nth term = [tex]ar^n^-^1[/tex]

6th term = [tex]23*(4)^6^-^1[/tex]

[tex]=23*4^5[/tex]

[tex]=23*1024[/tex]

[tex]=23552[/tex]

Hope this helps :)

Pls brainliest...

solve the following proportion for x

Answers

Step-by-step explanation:

Cross multiply to get

8 (x-1) = 2 (x+2)

8x -8 = 2x + 4

6x = 12

x = 2

Answer is B) 2

How to solve

1: x-1 /2 = x+2 /8
Simplify the equation using cross-multiplication
8(x-1)=2(x+2)

2: 8(x-1)=2(x+2)
Simplify the equation using cross-multiplication
8(x-1)=2(x+2) = 8x-8=2×+4

3: 8x-8=2x+4
Move the constant to the right-hand side and change its sign
8x-2×=4+8

4: 8x-2x=4+8
Collect like terms
6x=4+8

5: 6x=12
Divide both sides of the equation by 6
x=2

Hope this helps have a nice day

The PTO is selling raffle tickets to raise money for classroom supplies. A raffle ticket costs $3. There is 1 winning ticket out of the 300 tickets sold. The winner gets a prize worth $76. Round your answers to the nearest cent.

What is the expected value (to you) of one raffle ticket? $


Calculate the expected value (to you) if you purchase 12 raffle tickets.


What is the expected value (to the PTO) of one raffle ticket? $


If the PTO sells all 300 raffle tickets, how much money will they raise for the classroom supplies?

Answers

The expected value (to you) of one raffle ticket is -$2.737.

The expected value (to you) if you purchase 12 raffle tickets is -$32.84.

The expected value (to the PTO) of one raffle ticket is $2.737.

Amount of money raised if 300 tickets are sold is $821.1.

Cost of a ticket = $3

P(winning a ticket) = 1/300

Winning amount = $76

Prize value = 1/300 × $76 = $0.253

Expected value (to you) for 1 ticket = $0.253 + (299/300 × -$3) = -$2.737

Expected value (to you) if you purchase 12 tickets = 12 × -$2.737

                                                                                   = -$32.84

Expected value (to the PTO) of raffle ticket = -$0.253 + (299/300 × $3)

                                                                       = $2.737

If they sell 300 tickets,

Expected value = 300 × $2.737 = $821.1

Amount raised = $821.1

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Four identical cubes are joined to make a new shape.
What is the new shape's surface area?
PRL

Answers

To determine the surface area of the new shape formed by joining four identical cubes, we need some additional information about how the cubes are arranged. There are several possible ways to join the cubes, resulting in different shapes.

If the cubes are arranged in a square-based pyramid formation, with three cubes forming the base and the fourth cube placed on top, the new shape would have a total surface area given by:

Surface Area = 3 × (Surface Area of a Cube) + (Surface Area of the Top Cube)

The surface area of a cube is calculated by multiplying the length of one side by itself and then multiplying the result by 6 (since a cube has 6 faces of equal size). Since the cubes are identical, the side length is the same for all of them.

If you provide the side length of the cubes or any specific arrangement of the cubes, I can help you calculate the surface area of the resulting shape accordingly.


A tank in the shape of a hemisphere has a radius of 4 feet. If the liquid that fills the tank has a density of 75 pounds per cubic foot, what is the total weight of the liquid in the tank, to the nearest full pound?

Answers

The weight of the liquid can be found by multiplying its volume by its density. The volume will be that of a hemisphere, which can be found using the appropriate formula.

Hemisphere volume

The volume of a hemisphere with radius r is given by ...

 [tex]\sf V = \huge \text(\dfrac{2\pi}{3}\huge \text)r^3[/tex]

When the radius is 4 ft, the volume is ...

 [tex]\sf V = \huge \text(\dfrac{2\pi}{3}\huge \text)(4 \ ft)^3 = \dfrac{128\pi }{3} \ ft^3[/tex]

Weight

The weight of the liquid in the tank is found using the density.

 [tex]\sf W = \rho V[/tex]

 [tex]\sf W = (75 \ lb/ft^3)\huge \text(\dfrac{128\pi}{3} \ ft^3\huge \text) = 3200\pi \ lb \thickapprox 10,053 \ lb[/tex]

The total weight of the liquid in the tank is about 10,053 pounds.

A can has 5 marbles in it.
The radius of each ball (marble) is 1.2 cm and the radius of the can is 1.50cm.
The height of this can is 4 cm. How much empty space is in this can?

Answers

The empty space is -7.92 cm^3 (rounded to two decimal places).The result is negative, indicating that there is not enough space in the can to fit all the marbles.

To calculate the empty space in the can, we first need to calculate the volume occupied by the marbles and then subtract it from the total volume of the can.

The volume of each marble can be calculated using the formula for the volume of a sphere:

V_marble = (4/3) * π * r^3

where r is the radius of the marble.

Given that the radius of each marble is 1.2 cm, we can calculate the volume of one marble as follows:

V_marble = (4/3) * π * (1.2 cm)^3

≈ 7.238 cm^3 (rounded to three decimal places)

Since there are 5 marbles in the can, the total volume occupied by the marbles is:

V_total_marbles = 5 * V_marble

≈ 5 * 7.238 cm^3

≈ 36.19 cm^3 (rounded to two decimal places)

The volume of the can can be calculated using the formula for the volume of a cylinder:

V_can = π * r^2 * h

where r is the radius of the can and h is the height of the can.

Given that the radius of the can is 1.5 cm and the height of the can is 4 cm, we can calculate the volume of the can as follows:

V_can = π * (1.5 cm)^2 * 4 cm

≈ 28.27 cm^3 (rounded to two decimal places)

To find the empty space in the can, we subtract the volume occupied by the marbles from the total volume of the can:

Empty space = V_can - V_total_marbles

≈ 28.27 cm^3 - 36.19 cm^3

≈ -7.92 cm^3 (rounded to two decimal places)

The result is negative, indicating that there is not enough space in the can to fit all the marbles.

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Using the following information, find the sum of the given arithmetic series.
a1= 16, d = -9, n = 18

Answers

Answer:

Sn = n÷2[2a+(n-1)d]

=18÷2[2(16)+(18-1)(-9)]

Sn=-1089

Step-by-step explanation:

First write out the formula for sum in arithmetic series

Then substitute the given information

Then punch everything as it is together with the signs to get the answer

Translate the sentence into an equation.
Eight more than the quotient of a number and 7 is equal to 3.

Answers

The " Eight  further than the Quotient of a number and 7 is equal to 3," and the  result to the equation is x = -35.

The equation 8( x/ 7) =  3 represents the  judgment " Eight  further than the Quotient of a number and 7 is equal to 3," and the  result to the equation is x = -35.    

" Eight  further than" implies addition, so we've 8 " The quotient of a number and 7" means dividing a number by 7, so we've x/ 7 " is equal to" means that the expression on the left side is equal to the expression on the right side, so we've =  " 3" is the value to which the expression on the left side is equal, so we've 3  Putting it all together the  judgment " Eight  further than the quotient of a number and 7 is equal to 3" can be  restated into the equation ( x/ 7) =  3  

In this equation, x represents the number we're trying to find. To  break for x, we can manipulate the equation using algebraic operations to  insulate x on one side of the equation.  By abating 8 from both sides of the equation, we get ( x/ 7)- 8 =  3- 8  Simplifying, we have  x/ 7 = -5

To  insulate x, we can multiply both sides of the equation by 7  *( x/ 7) = -5 * 7  This gives us  x = -35  thus, the equation 8( x/ 7) =  3 represents the  judgment " Eight  further than the quotient of a number and 7 is equal to 3," and the  result to the equation is x = -35.

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Which of the following is not a Pythagorean triple?
A. (6, 8, 10)
B. (9, 12, 15)
C. (7, 24, 25)
D. (4, 5, 6)​

Answers

Answer:

D. 4, 5, 6, then 

H² = P² + B²

6² = 5² + 4²

36 = 25 + 16 

36 ≠ 41

This is not Pythagorean triple.

A rectangular prism has a width of 8
inches, a length of 15 inches, and a
volume of 720 cubic inches. What is
the height of the prism?

Answers

Answer:

6 inches

Step-by-step explanation:

Volume= Length*Width*Height

720=15*8*H

720=120H

H=6

For each equation, choose the statement that describes its solution.
If applicable, give the solution.
-4 (u + 1) + 6u = 2(u + 2) - 8
No solution
O "=0
O All real numbers are solutions
2(y-1) + 4y= 3(y-1) + 7
No solution
O y = 0
O All real numbers are solutions

Answers

Answer:

1,-4(u+1)+6u=2(u+2)-8

Step-by-step explanation:

=-4u-4+6u=2u+4-8

=2u-4=2u-4

=2u-2u=-4+4

=0=0

2,2(y-1)+4y=3(y-1)+7

=2y-2+4y=3y-3+7

=6y-2=3y+4

=6y-3y=4+2

=3y/3=6/3=y=2

: all real numbers are solutions

1. The demand of calculators when its price per unit is Rs 1200,is Rs 4000. When the price increases to Rs 1500, only 3000 calculators are demanded. a.Find the demand equation in the form of p = f(Q)
b.Obtain the number of calculations demanded when the price per unit calculators is Rs 1650
c. If 4500 calculations are demanded, what should be the price per unit of calculator? ​

Answers

a) the demand equation in the form of p = f(Q) is p = -10/3Q + 14533.33

b) when the price per unit of calculators is Rs 1650, approximately 3865 calculators are demanded.

c) when 4500 calculators are demanded, the price per unit should be approximately Rs 3010.

To find the demand equation in the form of p = f(Q), we need to determine the relationship between the price per unit (p) and the quantity demanded (Q) based on the given information.

Let's use the two data points provided:

Point 1: Price (p1) = Rs 1200, Quantity (Q1) = 4000

Point 2: Price (p2) = Rs 1500, Quantity (Q2) = 3000

First, we calculate the slope of the demand equation using the formula:

Slope = (Q2 - Q1) / (p2 - p1)

Substituting the values, we get:

Slope = (3000 - 4000) / (1500 - 1200) = -1000 / 300 = -10/3

Next, we use one of the data points and the slope to find the y-intercept (b). Let's use Point 1:

p1 = Rs 1200, Q1 = 4000

Using the equation of a straight line (y = mx + b), we can rearrange it to solve for b:

b = y - mx

b = 1200 - (-10/3)(4000) = 1200 + 40000/3 = 1200 + 13333.33 = 14533.33

Therefore, the demand equation in the form of p = f(Q) is:

p = -10/3Q + 14533.33

To find the number of calculators demanded (Q) when the price per unit is Rs 1650, we can rearrange the equation and solve for Q:

1650 = -10/3Q + 14533.33

-10/3Q = 1650 - 14533.33

-10/3Q = -12883.33

Q = (-12883.33) / (-10/3)

Q = 12883.33 * 3/10

Q ≈ 3865

Therefore, when the price per unit of calculators is Rs 1650, approximately 3865 calculators are demanded.

Now, let's determine the price per unit (p) when 4500 calculators are demanded. We rearrange the equation and solve for p:

4500 = -10/3Q + 14533.33

-10/3Q = 4500 - 14533.33

-10/3Q = -10033.33

Q = (-10033.33) / (-10/3)

Q = 10033.33 * 3/10

Q ≈ 3010

Therefore, when 4500 calculators are demanded, the price per unit should be approximately Rs 3010.

By using the slope-intercept form of a linear equation and the given data points, we can determine the demand equation and solve for various scenarios, including finding quantities demanded at specific prices and determining the appropriate price for a given quantity demanded.

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if P={1,2,3,4,5,6,7} , Q= {5,6,7}, and R= {0,7,11},find a: QnR, b:Pn{ QuR} and c: PnR​

Answers

[tex]Q\cap R=\{7\}\\\\Q\cup R=\{0,5,6,7,11\}\\P\cap(Q\cup R)=\{5,6,7\}\\\\P\cap R=\{7\}[/tex]

Which expression is equivalent to (7x - 4) - (2 - 1/2x)? A. 11/2x + 6 B. 11/2x - 6 C. 5/2x + 6 D. 15/2x - 6

Answers

The expression (7x - 4) - (2 - 1/2x) simplifies to 3/2 is equivalent to 11/2x + 6. A.

To simplify the expression (7x - 4) - (2 - 1/2x), we can remove the parentheses and combine like terms.

(7x - 4) - (2 - 1/2x) = 7x - 4 - 2 + 1/2x

Now, let's combine the like terms:

= 7x + 1/2x - 6

To add the terms with the same variable, we need to have a common denominator.

The common denominator for x and 1/2x is 2x.

= (14x + x) / (2x) - 6

= (15x) / (2x) - 6

= 15/2 - 6

= (15 - 12) / 2

= 3/2

The brackets and merge related words in order to make the statement (7x - 4) - (2 - 1/2x) simpler.

(7x - 4) - (2 - 1/2x) = 7x - 4 - 2 + 1/2x

Let's now mix similar terms:

= 7x + 1/2x - 6

We need a common denominator so that we may sum the words that share the same variable.

2x serves as the common denominator for x and 1/2x.

= (14x + x) / (2x) - 6

= (15x) / (2x) - 6

= 15/2 - 6

= (15 - 12) / 2

= 3/2

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What is the meaning of "the binary predicate"?

Answers

The binary predicate refers to the membership relation denoted by the symbol "€" (read as "belongs to" or "is an element of").

We have,

The binary predicate is a binary relation because it takes two arguments: an element and a set.

The predicate evaluates to true if the element is a member of the set, and false otherwise.

The binary predicate € is used to establish the membership relationship between elements and sets in set theory.

For example, if we have a set A and an element x, we can write "x € A" to indicate that x is an element of A.

The use of a binary predicate in set theory allows for the formulation of statements and properties involving membership.

It enables us to define sets, make assertions about their elements, and perform operations such as union, intersection, and complement.

Thus,

The binary predicate € forms an essential part of the language and logic of set theory.

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At a local market, the cost of apples is derectly proportional to the weight of the apples. The graph shows the relationship between the weight of apples in pounds and the cost in dollars

Answers

Answer:

The statement you provided describes a situation in which the cost of apples at a local market is directly proportional to the weight of the apples. This means that as the weight of the apples increases, the cost also increases at a constant rate. The graph mentioned in the statement would show this relationship between the weight of apples in pounds and the cost in dollars.

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