ANSWER it please Math.Help. Give Explanation on how you did it, too, because my brain needs to know

ANSWER It Please Math.Help. Give Explanation On How You Did It, Too, Because My Brain Needs To Know

Answers

Answer 1

[tex]\boxed{y}=\cfrac{1}{2}x-4\\\\ y=-2x+1 \end{cases}\qquad \qquad \qquad \stackrel{\textit{substituting on the 2nd equation}}{\stackrel{\boxed{y}}{\cfrac{1}{2}x-4}~~ = ~~-2x+1} \\\\\\ \stackrel{\textit{multiplying both sides by }\stackrel{LCD}{2}}{2\left( \cfrac{1}{2}x-4 \right)~~ = ~~2(-2x+1)}\implies x-8=-4x+2\implies 5x-8=2[/tex]

[tex]5x=10\implies x=\cfrac{10}{5}\implies \blacktriangleright x=2 \blacktriangleleft \\\\\\ \stackrel{\textit{we know that}}{y==\cfrac{1}{2}x-4}\implies y=\cfrac{1}{2}(2)-4\implies \blacktriangleright y = -3 \blacktriangleleft \\\\[-0.35em] ~\dotfill\\\\ ~\hfill (2~~,~~-3)~\hfill[/tex]


Related Questions

Your cell phone costs $50 a month plus $0.25 for each text message, (t). How much would your monthly bill be if you sent 40 text messages?

Your total monthly bill would be $____
if you sent 40 text messages.

Answers

Answer:

$60

Step-by-step explanation:

40 text messages × .25 each = $10. Plus the $50 per month is $60.

Answer:

it should be $60 a month

NO LINKS!! Which graph illustrates even symmetry? Odd symmetry? Please support your response.​

Answers

Answer:

a) odd

b) even

Step-by-step explanation:

a) It is an odd symmetry because it is symmetric about the origin, meaning if you rotate an odd function 180° around the origin, you will have the same function you started with.

b) It is an even symmetry because it reflects over the y-axis. The left and right looks the same.

help me its hard for me and brainleist because I only have 2 minutes

Answers

Answer:

y=x+14

Step-by-step explanation:

Let us check if this is the answer:

the first numbers in the table are 0 and 14

0 plus 14 equals 14.

Now the next two numbers on the table:

1 plus 14 equals 15

And one more:  the third numbers on the table:

2 plus 14 equals 16

-----does this make sense? need more explination? then let me know

Determine f(-a) where f(x) = x2 - 6x and simplify.

Answers

Answer:

6a

Step-by-step explanation:

replace x with -a

-2a -6(-a)

-2a +8a

6a

Ed hiked 3 kilmometers on Saturday and swam 2 kilometers on sunday. How many total meters did ed hike and swim on saturday and sunday ?

Answers

Answer:

5000 meters

Step-by-step explanation:

kilometers to meters=1km to 1000m

so 5km to 5000m

The total meters did ed hike and swim on Saturday and Sunday 5000 meters.

We have given,

Ed hiked 3 kilometers on Saturday and

Swam 2 kilometers on Sunday.

What is the value of one kilometer?

Kilometers to meters

1km = 1000m

We have to find the total distance Ed hiked and swam on Sunday and Saturday,

Total distance=3km +2km

=3km +2km

=5km

1km=1000m.

So 5km to 5000m.

To learn more about the distance visit:

https://brainly.com/question/17273444

Find the value of b.
A 57
B 50
C 123
D 61.5

Answers

Answer: The answer is 50

Step-by-step explanation:

I did the test

If f(x) = 2x + 1 and g(x) = x^2, the function (gοf)(x) is:

Answers

Answer:

4x² + 4x + 1

Step-by-step explanation:

to evaluate (g ○ f)(x) , substitute x = f(x) into g(x)

g(f(x))

= g(2x + 1)

= (2x + 1)² ← expand using FOIL

= 4x² + 4x + 1

1+2*3-4. Please answer

Answers

Answer:1(2x3)-4= 3

2x3= 6 -4=2+1=3

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

2x3=6

1+6=7

7-4=3

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 2 cubic feet per minute. The diameter of the base of the cone is approximately three times the altitude. At what rate is the height of the pile changing when the pile is 2 feet high?

Answers

Answer:

[tex]\frac{2}{9\pi}ft^3/min[/tex]

Step-by-step explanation:

Given

[tex]\frac{dV}{dt}=2ft^3/min\\ \\\frac{dh}{dt}=?\\ \\V_{cone}=\frac{1}{3}\pi r^2h\\\\d=2r=3h\\\\\frac{d}{2}=r=\frac{3}{2}h\\\\h=2[/tex]

Calculation

[tex]V=\frac{1}{3}\pi r^2h\\ \\V=\frac{1}{3}\pi(\frac{3}{2}h) ^2h\\\\V=\frac{1}{3}\pi(\frac{9}{4}h^2)h\\ \\V=\frac{9}{12}\pi h^3\\ \\V=\frac{3\pi}{4}h^3\\ \\\frac{dV}{dt}=\frac{9\pi}{4}h^2\frac{dh}{dt}\\ \\2=\frac{9\pi}{4}(2)^2\frac{dh}{dt}\\ \\ 2=9\pi\frac{dh}{dt}\\ \\ \frac{2}{9\pi} =\frac{dh}{dt}[/tex]

Therefore, the rate that the height of the pile is changing when the pile is 2 feet high is [tex]\frac{2}{9\pi}ft^3/min[/tex].

Kelly is taking a cross-country road trip. She was able to drive 325 miles in 2 days. If her car gets 30 miles to the gallon, how many gallons of gas did she use for the trip?

Answers

Answer:

the awnser is 19,500

Step-by-step explanation:

you multiply 325 × 2=650 then you multiply 30×650=19,500

Help need because i´m stuck

Answers

Answer:

  594 in²

Step-by-step explanation:

There are several ways to do this.

divide the shaded region into rectangles, and add their areasdivide the shaded region into trapezoids and add their areassubtract the white space from a bounding rectangle.

Given the way the figure is dimensioned, the last strategy is the easiest.

A rectangle that surrounds the entire figure will be 36 inches wide and 22 inches high. The white space rectangle in the lower right corner is shown to be 18 inches wide and 11 inches high.

The area of a rectangle is the product of its length and width:

  A = LW

So the difference in area between the "bounding" rectangle and the whitespace rectangle is ...

  shaded area = (36 in)(22 in) -(18 in)(11 in) = 792 in² -198 in²

  shaded area = 594 in²

_____

Additional comment

You can also recognize that the dimensions of the cut out corner are each half the overall dimensions. That means the shaded area is 3/4 of the overall "bounding" rectangle. There are several ways you can make use of that fact.

MULTIPLE CHOICE QUESTION
SOLVING SYSTEMS OF EQUATIONS BY ELIMINATION
5x=y=7- 20-49:22
+ = 14
21 x = 42
2x-y=5
4x+2y=-10
x + 4y = 14
What is the value of y in this system?
Hint: Plug in the value of x to find y.
3

-2

-3

2

Answers

Answer:

(Q.1) No solution

(Q.2) True

(Q.3)  x = 4 - 2y

(Q.4) True

Step-by-step explanation:

(Q.1) As shown in the first attached figure.

By graphing.   x + 2y = 8   &   x + 2y = -4

The two lines are parallel, there is no intersection points between the lines.

So, there is no solution to the system of equations.

Also, we should note the parallel lines have the same slope

to find it make the equation similar to y = mx + c where m is the slope

at this situation m = -1/2

===================================================

(Q.2) As shown in the second attached figure.

By graphing the system of inequalities  y> -3x+2  &  y<2x+1

The Shaded area represents the solution of the system of inequalities

And the point (4,2) is inside the shaded area

So, The ordered pair (4,2) is a solution to the system of inequalities.

====================================================

(Q.3) solving the system { x+2y=4  &  2x+2y=6 } by substitution

From the first equation x + 2y = 4

we will find x in terms of y then plug it into the second equation

So, x + 2y = 4 ⇒  x = 4 - 2y

=====================================================

(Q.4) As shown in the third attached figure.

By graphing.   2x + 4y = 8  &  x + 2y = 6

The two lines are parallel, there is no intersection points between the lines.

So, there is no solution to the system of equations.

Also, we should note the parallel lines have the same slope

to find it make the equation similar to y = mx + c where m is the slope

at this situation m = -1/2

Answer these questions about the steps of simplifying this rational expression:


Part A What is the GCF of the terms in the numerator and denominator? Rewrite the expression by factoring out any common factors.

Part B Write the quadratic expressions in the numerator and the denominator in factored form.

Part C Cancel the common factor of the numerator and the denominator to write the expression in simplified form.

Answers

Answer:

Step-by-step explanation:

4x²-14x+6

x²-7x²+12x

=2×2×x×x-2×7×x+2×3

x×x×x-7×x×x+2×2×3

= -2+2

x×x

the 2s cancle each other

= x²

What is the slope intercept form of the equation of the line passing through (1,2) and (3,10).

Answers

Answer:

y = 4x - 2

Step-by-step explanation:

slope = (10 - 2)/(3 - 1) = 8/2 = 4

Let the equation be y = 4x + b

Sub (1, 2) into it,

2 = 4*1 + b

so b = 2 - 4 = -2

The equation is y = 4x - 2

Please help me with this question

Answers

Answer:

13.5m/s

Step-by-step explanation:

formula is v=u + at

as given:

u=3m/s

a=1.5m/s²

t=7secs

v=3+1.5(7)

v=3 + 10.5

v = 13.5m/s

The unit for velocity is m/s

Answer:

a) 87

b) 13.5

Step-by-step explanation:

for the first question we've been given the equation and the parameters needed

so we just input the parameters

3a+4b when a is 17 and b is 9

therefore the answer is 3*17 + 4*9

51+36=87

second question

that's an equation of motion and we've been given all the parameters we also need so we just input the parameters In the equation

v=u+at

v=3+1.5*7

v= 3+10.5

v=13.5

Find the measure of AB.
A 21
B 14
C 20
D 22

Answers

Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Use the figure to solve the inequality

Answers

Answer:a hope this helps

Step-by-step explanation:

The area of a parallelogram is 48 ft. If the base of the parallelogram is 8 feet, what is its height?
8 feet
6 feet.
5 feet
7 feet

Answers

[tex]\textit{area of a parallelogram}\\\\ A=bh~~ \begin{cases} b=base\\ h=height\\[-0.5em] \hrulefill\\ A=48\\ b=8 \end{cases}\implies 48=8h\implies \cfrac{48}{8}=h\implies 6=h[/tex]

im really struggling to finish this asap. help would rlly be appreciated :)

Answers

(43 + 4x) / 2 = 32

43 + 4x = 64

4x = 21

x = 21 / 4

x = 5.25

Which expression is equivalent to

Answers

Answer:

10³⁰

Step-by-step explanation:

firstly working out without the power of 3

[tex]( \frac{10 {}^{15} }{10 {}^{5} } )[/tex]

this is the same as 10¹⁵ ÷ 10⁵

here the bases are the same and it's division so we subtract the powers

15 - 5 = 10

10¹⁵ ÷ 10⁵ = 10¹⁰

we are left with (10¹⁰)³, multiply the powers

10 × 3 = 30

final answer = 10³

Hey there!

(10^15/10^5)^3


10^15

= 1,000,000,000,000,000


10^5

= 10 * 10 * 10 * 10 * 10

= 100 * 100 * 10

= 10,000 * 10

= 100,000


(1,000,000,000,000,000/100,000)^3

= (10,000,000,000)^3

= 10,000,000,000 * 10,000,000 * 10,000,000

= 100,000,000,000,000,000 * 10,000,000

= 10^30


Therefore, your answer is: 10^30


Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

PLEASE HELP QUICKLY 10 BRAINLY POINTS

The student store buys one dozen pencils for 96¢ and sells them for 20¢ each. How much profit does the store make on a dozen pencils?

Group of answer choices


$0.12


$1.44


$0.24

Answers

Answer: $1.44

Step-by-step explanation:

The General Sherma, the largest tree in the world, has a maximum diameter of 36.5 feet. What is the circumference of the tree?

Answers

Answer:

The General Sherman Tree is the world's largest tree, measured by volume. It stands 275 feet (83 m) tall and is over 36 feet (11 m) in diameter at the base. Sequoia trunks remain wide high up. Sixty feet above the base, the Sherman Tree is 17.5 feet (5.3 m) in diameter.

Step-by-step explanation:

What solution value satisfies the compound inequality x - 1 < -7 or x/4 > 1?

Answers

Answer:

x > -6  or  x > 4

Answer: B. x = –8

Step-by-step explanation:

Could you please list all 6 answers below? 30 points and Brainliest if you answer. You have to put them in simplest form.
1. 3/8 x 4/11
2. 8/15 x 5/6
3. 7/12 x 3/14
4. 9/20 x 4/5
5. 7/10 x 20/21
6. 8/18 x 9/20

Answers

Answer:

[1] [tex]\frac{3}{22}[/tex]

[2] [tex]\frac{4}{9}[/tex]

[3] [tex]\frac{1}{8}[/tex]

[4] [tex]\frac{9}{25}[/tex]

[5] [tex]\frac{2}{3}[/tex]

[6] [tex]\frac{1}{5}[/tex]

Step-by-step explanation:

[1] Using the given fractions,

3/8×4/11

Applying the fractions formula for multiplication,

=3×4/8×11

=12/88

Simplifying 12/88, the answer is

=3/22

ˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋ

[2] Using the given fractions,

8/15×5/6

Applying the fractions formula for multiplication,

=8×5/15×6

=40/90

Simplifying 40/90, the answer is

=4/9

ˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊ

[3] Using the given fractions,

7/12×3/14

Applying the fractions formula for multiplication,

=7×3/12×14

=21/168

Simplifying 21/168, the answer is

=1/8

ˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊ

[4] Using the given fractions,

9/20×4/5

Applying the fractions formula for multiplication,

=9×4/20×5

=36/100

Simplifying 36/100, the answer is

=9/25

ˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊ

[5] Using the given fractions,

7/10×20/21

Applying the fractions formula for multiplication,

=7×20/10×21

=140/210

Simplifying 140/210, the answer is

=2/3

ˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊˋˏˎˊ

[6] First:

Reduce fractions where possible.

Then your initial equation becomes:

4/9×9/20

Applying the fractions formula for multiplication,

=4×9/9×20

=36/180

Simplifying 36/180, the answer is

=1/5

[RevyBreeze]

Your most trustful answer

Suppose that X stands for a temperature in degrees Celsium, Y the same temperature in degrees Fahrenheit. So: Y = (9/5)*X + 32


Let E(X)=10 and Var(X)=2, Find E(Y) and Var(Y).

Answers

The value of E(Y) and Var(Y) are 50 and 178/5 respectively

Temperatures measurement

Given the formula for temperature conversion expressed as:

Y = (9/5)*X + 32

where:

X stands for a temperature in degrees Celsius,

Y the same temperature in degrees

If E(X) = 10, then;

Y = (9/5) * 10 + 32

Y = (9*2) + 32

Y = 18 + 32

Y = 50

Hence E(Y) = 50

If Var(X) = 2

Y = (9/5) * 2 + 32

Y = 18/5 + 32

Y =  178/5

Hence Var(Y) = 50

The value of E(Y) and Var(Y) are 50 and 178/5 respectively

Learn more on temperature here: https://brainly.com/question/894531

Dan has a board that is
8 3/4
feet long. He cuts off
4 5/6
feet and says he has
4 1/12
feet left. Which of the following explains whether Dan is correct?

Answers

Answer:

He is wrong.The answer is 3 11/12.

Step-by-step explanation:

Given equation:

8 3/4 - 4 5/6

Simplify:

8 9/12 - 4 10/12

Solve:

8 - 4 = 4= 9/12 - 10/12= 21/12 - 10/12= 11/12= 3 + 11/12= 3 11/12.

He is wrong.

He was off by 3 digits.

Hi everyone same as a while ago please help me with this :))) (with solution plzz) Thank you!

6.) Convert 820 cg to g.

7.) Convert 3.8 L to mL.

8.) Convert 56000 cL to L

9.) Convert 63 dL to mL.

10.) Convert 12 in to cm

11.) Convert 4 mi to ft.

12.) Convert 16 ft to cm.

(You don't have to answer all of them , Half of it is ok like 9-12 ) Thank you​

Answers

Answer:

6. 8.2g

7. 3800 ml

8. 560 L

9. 6300 ml

10. 30.48cm

11. 21120 ft

12. 487.48cm

Step-by-step explanation:

820 ÷ 100

3.8 × 1000

56000 ÷ 100

63 × 100

12 × 2.54

4 × 5280

16 × 30.48

Please mark me as brainliest


What do I supposed to do ?

Answers

Answer:

Just add the 2 fractions that were mentioned

Step-by-step explanation:

turn 6 1/2 into an improper fraction and then add it to 5/8 by finding a common denominator

so it would be like -

13/2 + 5/8    =      52/8 + 5/8   =   57/8   =   7  1/8

Answer:

6 1/2 + 5/8 = 57/8 = 7 1/8 = 7.125

Step-by-step explanation:

Conversion a mixed number 6 1/2

to a improper fraction: 6 1/2 = 6 1/2 = 6 · 2 + 1/2 = 12 + 1/2 = 13/2

To find a new numerator:

a) Multiply the whole number 6 by the denominator 2. Whole number 6 equally 6 * 2/2 = 12/2

b) Add the answer from previous step 12 to the numerator 1. New numerator is 12 + 1 = 13

c) Write a previous answer (new numerator 13) over the denominator 2.

Six and one half is thirteen halfs

Add: 13/2 + 5/8 = 13 · 4/2 · 4 + 5/8 = 52/8 + 5/8 = 52 + 5/8= 57/8

For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(2, 8) = 8. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 2 × 8 = 16. In the following intermediate step, it cannot further simplify the fraction result by canceling.

In other words - thirteen halves plus five-eighths = fifty-seven eighths.

make L and h the subject of formula
[tex]V = \frac{1}{2} LBH[/tex]

Answers

Answer:

[tex]V = \frac{1}{2} LBH \\ \\ \\ LH =V \div ( \frac{1}{2} B) \\ \\ LH =V \times \frac{2}{B} \\ \\ \\LH = \frac{2V}{B} [/tex]

What is an equation of the line that passes through the points (-6, 5) and (6, 7)?

Answers

Answer:

[tex]y=\frac{1}{6}x+6[/tex]

Step-by-step explanation:

Let [tex](x_1,y_1)\rightarrow(-6,5)[/tex] and [tex](x_2,y_2)\rightarrow(6,7)[/tex]

Determine slope

[tex]m=\frac{y_2-y_1}{x_2-x_1}\\ \\m=\frac{7-5}{6-(-6)}\\ \\m=\frac{2}{6+6}\\ \\m=\frac{2}{12}\\ \\m=\frac{1}{6}[/tex]

Use either ordered pair to find the y-intercept

[tex]y=mx+b\\\\7=\frac{1}{6}(6)+b\\\\7=1+b\\\\6=b[/tex]

Final equation

[tex]y=\frac{1}{6}x+6[/tex]

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