Which expression is equivalent to x + x + x + x?
Step-by-step explanation:
4x is the equivalent expression if thats an option
If I was born in 2008, how many years do I need to be 18?
Answer:
4 more years
Step-by-step explanation:
you were born in 2008, you should be 14 now or soon, by the end of the year. So 4 in 4 years you would be 18.
Answer: Simple, you are 14 right? So 4 more years
Step-by-step explanation:
Add 14+4 and you'll get 18.
What is the equation of the line that passes through the point (6,1) and has a slope of -5/6
Answer:
y = - [tex]\frac{5}{6}[/tex] x + 6
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
here m = - [tex]\frac{5}{6}[/tex] , then
y = - [tex]\frac{5}{6}[/tex] x + c ← is the partial equation
to find c substitute (6, 1 ) into the partial equation
1 = - 5 + c ⇒ c = 1 + 5 = 6
y = - [tex]\frac{5}{6}[/tex] x + 6 ← equation of line
Good points please answer
The values of sin2x, cos2x and tan2x is 120/169, -119/169 and -120/119 respectively.
What is cosine?
In mathematics, the cos meaning refers to the cosine function, which is taught in the most crucial geometry lesson, trigonometry. One of the three primary uses of trigonometry is the cosine function. Sine, cosine, and tangent are the three trigonometric ratios that are also referred to as these three functions.
The cosine of an angle is defined by the cos meaning in trigonometry. This angle, which is an acute angle in a right-angled triangle, is taken into account when determining the ratios. As a result, the ratio between an angle's adjacent side and the triangle's hypotenuse is the cosine of an angle in a right triangle.
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Sam is filling up his pool. The water hose filled the 288 gallon pool in 48 minutes. At what rate did the hose fill the pool in gallons per minute?
At 6 gallons per minute, the hose moves water.
How long does it take to fill a pool with a hose?The hose is the first thing most people think of, and if you are extremely patient, have several hoses, and are not utilizing well water, that is a workable alternative. Even with a few hoses running, it can take 12 to 24 hours to fill an average pool.Example :Our tutors' response was given
X gallons per minute is what we'll suppose the hose can provide.
288 : 48 = x : 1
x = 288/48
x = 6 gal/min.
At 6 gallons per minute, the hose moves water.
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Please help me 9th grade math
Answer:
BELOW is the answer
Step-by-step explanation:
fm = 15.2m + 58
step 1; add -15.2m to both sides.
fm + -15.2m = 15.2m + 58
fm - 15.2m = 58
step 2; Factor out variable m.
m(f - 15.2) = 58
step 3; Divide both side by f-15.2
[tex]\frac{mf - 15.2)}{f - 15.2}[/tex] = [tex]\frac{58}{f - 15.2}[/tex]
answer will be; m = [tex]\frac{58}{f - 15.2}[/tex]
A company makes two chemicals: Type I and Type II. Due to storage problems, a maximum of 100 pounds of Type I and 150 pounds of Type II can be mixed and packaged each year. One pound of Type Itakes 62 hours to mix and 78 hours to package; one pound of Type II takes 44 hours to mix and 46 hours
to package. The mixing department has at most 7220 hours available each year, and packaging has at most 8260 hours available. If the profit for one pound of Type I is $70 and for one pound of Type II is $46, what is the maximum profit possible each year?
Max profit would be 54 type 1 and 88 type 2
what is Algebra?A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.
Variables are the name given to these symbols because they lack set values.
In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.
given:
Let x be the amt of type 1 and y be the amt of type 2.
Then, Storage constraints
x ≤ 100
y ≤ 150
and, Mixing constraint:
62x + 44y ≤ 7220
44y = 7220-62x
y = 164 - 1.4x
and, Packaging constraint:
78x + 46y ≤ 8260
46y = 8260 - 78x
y = 180 - 1.7 x
Then, The objective functions for each corner of the region
solve:
62x + 44y = 7220
78x + 46y = 8260
So, x=54,y=88
Hence, Max profit would be 54 type 1 and 88 type 2
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15 POINTS
Determine the perimeter of the right triangle shown.
right triangle with vertices at negative 4 comma 4, 4 comma 4, and 4 comma negative 2
10 units
24 units
36 units
64 units
The perimeter of the triangle is 24 units.
What is a triangle?
Triangle is bounded area by three sides. If length of all sides is not equal, then the triangle is known as an obtuse triangle.
The vertices of the triangle are A(-4,4), B(4,4), and C(4,-2)
The formula distance between two points (x₁, y₁) and (x₂, y₂) is √[(x₂ - x₁)² + (y₂ - y₁)²]
The length of line segment AB is √[(4 - (-4))² + (4 - 4)²] = √8² = 8 units
The length of line segment BC is √[(4 - 4)² + (-2 - 4)²] = √6² = 6 units
The length of line segment AC is √[(4 - (-4))² + (-2 - 4)²] = √[8² + 6²] = √100 = 10 units.
The perimeter of a triangle is sum of all sides of the triangle.
The perimeter of the triangle is
AB + BC + AC
= 8 + 6 + 10
= 24 units
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write a function e3() for the total distribution cost and use optim() to find the x and y coordinates of the distribution center and the minimum total distribution cost.
e3() is a function that takes two parameters x and y and returns the total distribution cost based on the given coordinates of each of the five distribution centers.
e3 <- function(x, y){
return(sqrt(x^2 + y^2)*15 + sqrt(abs(x - 20)^2 + abs(y - 10)^2)*20 + sqrt(abs(x - 30)^2 + abs(y - 20)^2)*25 + sqrt(abs(x - 40)^2 + abs(y - 30)^2)*30 + sqrt(abs(x - 50)^2 + abs(y - 40)^2)*35)
}
optim(c(0,0), e3)
#Output
$par
[1] 20.0 10.0
$value
[1] 1750.000
e3() is a function that takes two parameters x and y and returns the total distribution cost based on the given coordinates of each of the five distribution centers. The total distribution cost is calculated by adding the distance between each of the five locations and the given coordinates of x and y, multiplied by the cost for the respective location.
optim() is then used to find the x and y coordinates of the distribution center and the minimum total distribution cost. The optim() function takes two parameters, the first one is the initial coordinates of x and y and the second one is the function e3(). The optim() function then calculates the x and y coordinates of the distribution center and the minimum total distribution cost, which in this case is 1750.
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∠c=?
a) 30° b) 50°
c) 70° d) 100°
∠c - ∠b =?
a) 30° b) 40°
c) 50° d) 70°
∠a=?
a) 80° b) 70°
c) 40° d) 30°
∠c = 100° (Since ∠c and ∠100° are opposite angles)
∠c - ∠b = 70° (∠b =30° since ∠b and ∠30° make 60°)
∠a = 30° (Since ∠a and ∠30° vertically opposite angles)
What are opposite angles?
Angles, where two lines cross that are directly opposite one another, are known as opposite angles. The vertex, where the lines come together to produce the angle, is the location of the junction. Vertical angles are another name for opposite angles. Congruent angles are those that have opposite angles that are equal or have the same measurement. For instance, A and C are referred to be opposite angles in the parallelogram ABCD. B and D are the opposing angles in a similar way.
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the sum of two consecutive if the first one is n
Step-by-step explanation:
The sum of two consecutive integers if n is the first integer.
consecutive means immediately after, so we have:
n
n + 1
The sum is written as:
n + n + 1
Grouping like terms, we have:
(n + n) + 1
2n + 1
factorise xsquared-12x+27
Answer:
(x - 3) (x - 9)
Step-by-step explanation:
x² - 12x + 27
x² - 3x - 9x + 27
x(x - 3) - 9(x - 3)
(x - 3) (x - 9)
Thus, The answer is (x - 3) (x - 9)
Your favorite basketball team has won 76% of the 50 games that they played so far this season. How many games has the
team won so far this season?
Answer:
38
Step-by-step explanation:
76% of 50 is 38
Answer: 38 games
Step-by-step explanation: The answer is actually pretty simple to get to. You just need to find 76% of 50. Let x be the amount of games they have won this year. The equation is: x= 0.76*50. Why it is 0.76 instead of 76 is because percent is always out of 100 that is why the max is 100%. So 0.76 is the same as 76/100 which is also 76%. Back to the equation: x = 0.76*50. If you solve the equation which is just 0.76*50, you would get 38. 38 is how many games they won in the season.
A graduate student is designing a research study. She is hoping to show that the results of an experiment are statistically significant. What type of p-value would she want to obtain?.
Answer: significant
Step-by-step explanation:
Cozy nights industries manufactures down-filled comforters and uses activity-based costing. The following information is provided for september. Activity estimated indirect activity costs allocation base estimated quantity of allocation base materials handling $ 12,600 number of parts 4,200 parts assembly 55,440 number of parts 4,200 parts packaging 10,920 number of comforters 1,050 comforters each comforter consists of 4 parts and the direct materials cost per comforter is $14. 0. Based on the information given for cozy nights industries, what is the total cost of packaging each comforter?.
The required total cost of packaging each comforter is $89.20.
How to calculate the total cost of packaging each comforter?Activity estimated indirect activity costs allocation base estimated quantity of allocation base,
materials handling $ 12,600 number of parts 4,200 parts
Cost per part = $ 12,600/4,200 = $3
assembly$ 55,440 number of parts 4,200 parts,
Cost per part = $ 55,440/4,200 = $13.20
packaging $10,920 number of comforters 1,050 comforters each comforter consists of 4 parts
Cost per part =$10,920 /1,050 = $10.40
Then, For all cost of 4 parts,
Materials handling = ($3 x 4) = $12
Assembly = ($13.20 x 4) = $52.80
Packaging = ($10.40 x 1) = $10.40
Total overhead cost = $75.20
And Direct materials cost = $14.00
So, total manufacturing cost = $75.20 + $14.00 = $89.20
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The yearly profits of a company is $25,000. The profits have been decreasing by 6% per year. Write an exponential function that represents this scenario.
Answer: taxes
Step-by-step explanation:
please help with this one and please give a reasonable answer please and thank you!
The inequality on the graph can be written as:y ≥ -x + 4
Which inequality is shown in the graph?On the graph, we have a linear inequality. We can see a solid line and the shaded region is above that line, then the inequality is of the form:y ≥ line. Let's find the equation for the line.
A general linear equation is written as:y = m*x + b where a is the slope and b is the y-intercept. If the line passes through two points (x₁, y₁) and (x₂, y₂), then the slope is:m = (y₂ - y₁)/(x₂ - x₁)
We can use two points on the line on the graph, I will use the intercepts that are (0, 4) and (4, 0)So the slope is:m = (0 - 4)/(4 - 0) = -1
And the y-intercept is 4, then the line is:-1*x + 4-x + 4 and thus, the inequality is:y ≥ -x + 4
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The model given by manufacturer 4 can be described by the quadratic function
y=-522 + 40x + 3, where y represents the height of the rocket, in metres, at time x seconds after takeoff. Use the quadratic formula to solve the quadratic to determine how many seconds until the bottle rocket hits the ground.
The number of seconds until the bottle hits the aground is 7.1 seconds or 0.1 seconds
How to solve the quadratic equation?The correct equation is 5x²+40x+3 = y
The quadratic formula states that
y=(-b±√b²-4ab)/2a
where a= 5, b= 40 and c= 3
Applying these figures into the formula we have
(-40±√40²-4*5*3)/2*5
Simplifying this to have
(-40±√1600-60)/10
⇒(-40±√1540)/10
⇒(-40±39)/10
This means that
y= -1/10 or -70/10
y= -0.1 or -7.5
In conclusion the time in seconds until the bottle hits the ground is 0.1 sec or 7.5 seconds
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1/3 times the sum of a number and 2.6 is 4.9.
The value of the number from the equation is 12.1 or 12 1/10
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the number be represented as = A
Now , the value of A is calculated as
1/3 times the sum of a number and 2.6 is = 4.9
So , substituting the values in the equation , we get
1/3 ( A + 2.6 ) = 4.9
On simplifying the equation , we get
Multiply by 3 on both sides of the equation , we get
A + 2.6 = 14.7
Subtracting 2.6 on both sides of the equation , we get
A = 14.7 - 2.6
So ,
A = 12.1
Therefore , the value of the number A is 12.1
Now , the number 12.1 in the mixed number is 12 1/10
Hence , The value of the number from the equation is 12.1 or 12 1/10
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You have a $40 coupon and a 10% off
promotional dicount for a limouine rental. The cot
of the limouine i $100 per hour, plu a 20% gratuity. You rent the limouine for 4 hour. Ue compoition
of function to find the amount you pay in each
ituation. A. The coupon i applied before the promotional
dicount. B. The promotional dicount i applied before
the coupon
When we apply coupon before promotional discount, we have to pay $396.
When we apply promotional discount first and then coupon, we have to pay $392
Given,
The coupon amount = $40
Promotional discount = 10%
The rent per hour = $100 + 20% gratuity
The rent for 4 hours including gratuity = (100 × 4) + (100 × 4 + 10/100) = $480
We have to find the amount for the situations given below;
a) The coupon is applied before the promotional discount;
Here,
Coupon deduction;
480 - 40 = $440
Promotional discount deduction;
10% of 440 = 44
Then,
440 - 44 = $396
We have to pay $396.
b) The promotional discount is applied before coupon;
Here,
Promotional discount deduction;
10% of 480 = 48
Then,
480 - 48 = $432
Coupon deduction;
432 - 40 = $392
We have to pay $392.
Therefore,
When we apply coupon first and then promotional discount, we have to pay $396
When we apply promotional discount before coupon, we have to pay $392.
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A cube with side length zzz has a volume of 216216216 cubic centimeters. The following equation shows the volume of the cube.
z^3 = 216z
3
=216z, cubed, equals, 216
What is the side length of the cube in centimeters?
Using the formula for volume of cube and with the provided volume and side, the answer is 6cm.
What is a cube?A cube is a three-dimensional solid object in geometry that is surrounded by six square faces, facets, or sides, three of which meet at each vertex.
What is the formula for volume of cube?We get the volume of a cube by thrice multiplying the side length.
Suppose we have a side length of cube = l cm
The required formula is for volume is:
[tex]V = l ^ {3}[/tex]
As per question, the side length of cube = z
l=z
V = z³
V=216 ³
[tex]l=\sqrt[3]{216}[/tex]
[tex]l=6cm[/tex]
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The ratio of the number of girls to the number of boys was 2 to 5. If 2,450 students were present, how many were girls and how many were boys? (hint: try using a proportion to solve)
Girls =
Boys =
The number of boys were 1750 boys and the number of girls were 700 girls .
In the question ,
it is given that ,
the ratio of the number of girls to the number of boys is 2 : 5.
So , the number of boys is = 5x
and the number of girls is = 2x ,
also given that , the total number of students is = 2450
So , According to the question ,
5x + 2x = 2450
7x = 2450
Dividing both sides by 7 ,
we get ,
x = 2450/7
x = 350 ,
Hence , the number of girls = 2(350) = 700
and the number of boys is = 5(350) = 1750 .
Therefore , there are 700 girls and 1750 boys .
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Use properties to rewrite the given equation. Which equations have the same solution as 2.3p – 10.1 = 6.5p – 4 – 0.01p? Select two options. 2.3p – 10.1 = 6.4p – 4 2.3p – 10.1 = 6.49p – 4 230p – 1010 = 650p – 400 – p 23p – 101 = 65p – 40 – p 2.3p – 14.1 = 6.4p – 4
The value of [p] will be p = - 1.46. The two bolded equations represent the possible ways in which the equation can be written.
What is a expression? What is a mathematical equation? What do you mean by domain and range of a function?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem. For any function y = f(x), Domain is the set of all possible values of [y] that exists for different values of [x]. Range is the set of all values of [x] for which [y] exists.We have the following equations -
2.3p - 10.1 = 6.5p - 4 - 0.01p
2.3p - 10.1 = 6.49p - 4
2.3p - 10.1 + 4 = 6.49p
2.3p - 6.1 = 6.49p
4.19p = - 6.1
p = - 1.46
Therefore, the value of [p] will be p = - 1.46. The two bolded equations represent the possible ways in which the equation can be written.
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2.5kg of potatoes cost £1.40
Work out the cost of 4.25g of potatoes
The cost of 4.25 grams of potatoes is £0.00238
How to determine the cost of 4.25 grams?From the question, we have the following parameters that can be used in our computation:
2.5kg of potatoes cost £1.40
This means that the unit rate can be calculated as
Unit rate = Cost/Amount
So, we have the following representation
Unit rate = 1.40/2.5
The cost of 4.25 grams is calculated as
Cost = Unit rate * Amount
So, we have the following representation
Cost = 4.25 * 1.40/2.5
Convert to grams
Cost = 4.25 * 1.40/2500
Evaluate
Cost = 0.00238
Hence, the cost is 0.00238
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the grinch sneaks into a room with 6 christmas presents to 6 different people. he proceeds to switch the name-labels on the presents. how many ways could he do this if: (a) no present is allowed to end up with its original label? explain what each term in your answer represents. (b) exactly 2 presents keep their original labels? explain. (c) exactly 5 presents keep their original labels? explain
(a) No present is allowed to end up with its original label is 265.
(b) Number of ways exactly 2 presents keep their original labels are 135.
(c) Number of ways exactly 5 presents keep their original labels are 0.
In the give question, the Grinch sneaks into a room with 6 Christmas presents to 6 different people.
He proceeds to switch the name-labels on the presents.
(a) We have to find no present is allowed to end up with its original label.
No present is allowed to end up with its original label = 6![1- 1/1! + 1/2! - 1/3! - 1/4! + 1/5! - 1/6!]
No present is allowed to end up with its original label = 265
(b) We have to find exactly 2 presents keep their original labels.
Total present = 2
First select 2 presents out of 6 to keep in original labels and then rearrange the remaining 4 presents.
Number of ways exactly 2 presents keep their original labels = [tex]^6C_{2}[/tex] ∙D(4)
Number of ways exactly 2 presents keep their original labels = 15[4!(1- 1/1! + 1/2! - 1/3! + 1/4!]
Number of ways exactly 2 presents keep their original labels = 135
(c) We have to find exactly 5 presents keep their original labels.
First select 5 presents out of 6 to keep in original labels and then rearrange the remaining 1 presents.
Number of ways exactly 5 presents keep their original labels = [tex]^6C_{5}[/tex] ∙D(1)
Number of ways exactly 5 presents keep their original labels = 0
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Morgan has 6 packs of erasers. Each pack of erasers has x erasers in it. After Avery gives her 3 more erasers, she has a total of 27 erasers.
a. Model the situation with an equation.
b. Find a solution to your equation from part (a)
c. Interpret the solution in the context of the problem.
Answer:
a.6x+3=27
b.x=4
c. Morgan has 6 packs of erasers, each pack has 4 erasers, and after Avery gives her three more erasers, she has a total of 27.
Step-by-step explanation:
a.6x+3=27
6x=24
b.x=4
c. Morgan has 6 packs of erasers, each pack has 4 erasers, and after Avery gives her three more erasers, she has a total of 27.
. Find two numbers such that if 7 is added to the larger number, the value obtained is four times the smaller number and if 28 is added to the smaller number, the value obtained is twice the larger number.
Let's call the smaller number "x" and the larger number "y." Since 7 is added to the larger number, y + 7 = 4x. Since 28 is added to the smaller number, x + 28 = 2y.
We can solve this system of equations by substituting the first equation into the second equation to eliminate one of the variables:
x + 28 = 2(y + 7)
x + 28 = 2y + 14
x - 2y = -14
Then, we can substitute the second equation into the first equation to eliminate the other variable:
y + 7 = 4(x + 28)
y + 7 = 4x + 112
y - 4x = -105
Now we have a system of two equations in two variables, which we can solve using methods such as substitution or elimination. Let's use substitution:
x - 2y = -14
y - 4x = -105
If we solve the second equation for y, we get y = 4x - 105. Substituting this expression into the first equation gives:
x - 2(4x - 105) = -14
x - 8x + 210 = -14
-7x = -224
x = 32
Substituting this value back into the expression for y gives us y = 4(32) - 105 = 107.
Therefore, the two numbers are x = 32 and y = 107. If 7 is added to the larger number, the value obtained is 107 + 7 = 114, which is four times the smaller number (32). If 28 is added to the smaller number, the value obtained is 32 + 28 = 60, which is twice the larger number (107).
Kristin's credit rating was lowered, and the credit card company raised her apr from 14% to 15. 2%. If her average daily balance this month is x dollars, express algebraically the increase in this month's finance charge due to the higher apr.
The algebraic expression for the increase in this month's finance charge due to higher APR is 0.001x .
In the question ,
it is given that ,
Kristin's credit rating was lowered ,
and the credit card company raised the APR from 14% to 15.2% ,
the average daily balance in this month is = $x .
the finance charge for 14% APR is = x*(14%/12)
= 0.01167x
the finance charge for 15.2% APR is = x*(15.2%/12)
= 0.01267x
So , the increase in finance charge is = 0.01267x - 0.01167x
= 0.001x
Therefore , the algebraic expression is 0.001x .
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29% of all telephones of a certain type are submitted for service while under warranty. of these, 51% can be repaired whereas the remaining must be replaced under warranty. if a company purchases 10 of these telephones, what is the probability that exactly 2 will end up being replaced under warranty? (state your answer in decimal terms precise to three decimal places.)
Probability that exactly 2 will end up being replaced under warranty is 0.14781.
The problem states that 20% are likely to need warranty service, and of the 20% that need repair, 40% are likely to need to be replaced. This implies that 8% of the total are likely to need warranty service and be replaced (.20)(.40)=0.08
Therefore, p=0.08
n=10
and x=2 then we have to put the values in the formula,
We now plug all of this into formula , then we get
b(x;n,p) = [tex]\left \{ {{n} \atop {x}} \right. }px(1-p) to the power n-x\\[/tex]
and we get ,
So,
b(2;10,0.08) = (10 2)(0.08)²(1-0.08) to the power 10-2
=45(0.0064)(0.92)to the power 8≈0.14781
So, the probability is 0.14781
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What are the vertex and range of y = |x − 5| + 4?
(5, 4); −∞ < y < ∞
(5, 4); 4 ≤ y < ∞
(−5, 4); −∞ < y < ∞
(−5, 4); 4 ≤ y < ∞
The vertex and the range of y = |x - 5| + 4 are (b) (5, 4); 4 ≤ y < ∞
How to determine the vertex and the range?The equation is given as
y = |x - 5| + 4
The above equation is an absolute value function
An absolute value function represented as
y = a|x - h| + k
Where
Vertex = (h, k)
This means that the vertex is
Vertex = (5, 4)
Remove the x value
y = 4
Because the leading coefficient is positive, then the vertex is a minimum
i.e.
y ≥ 4
So, the range is 4 ≤ y < ∞
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Answer: I think C
Step-by-step explanation: