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3 years ago

What is the value of x when y equals 2 in the equation y equals x over 4 - 7

Mathematics

1 answer:

Alex3 years ago

5 0

The value of x when y = 2 is x = 36

Step-by-step explanation:

The equation that we have in this problem is:

$y=\frac{x}{4}-7$

In order to find the value of x when y is equal to

y = 2

We need to re-arrange the equation making x the subject.

We proceed as follows:

1) We add +7 on both sides:

$y+7=\frac{x}{4}-7+7\\y+7=\frac{x}{4}$

2) Now we multiply both sides by 4:

$4(y+7)=\frac{x}{4}\cdot 4\\x=4(y+7)$

3) Now we can substitute y = 2 and find the value of x:

$x=4(2+7)=4(9)=36$

Learn more about equations:

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Which number is larger -3.4 or -3 1/2 (BTW this is a fraction)? How will graphing these numbers on a number line help you determ

valkas [14]

Answer:

-3.4

Step-by-step explanation:

negative numbers are reverse counting on the line graph.

-3 1/2 is -3.5

-3.4 VS. -3.5

since it is reverse, -3.4 is greater

3 0

3 years ago

Please explain how to do this

Nat2105 [25]

Answer:

61%

Step-by-step explanation:

Area of square:

=a²

=12²

=144

Area of two quarter circles:

=2(¼×π×r²)

=2(¼×π×6²)

=2×28.72

=56.55

Finding the percentage:

=(56. 55÷144)×100

=0.3937×100

=39.27

subtract 100% by 39.27% to find the percentage of how much is shaded

=100-39.27

=60.73

=61 (rounded off to the nearest whole percent)

5 0

3 years ago

Read 2 more answers

6. Mary worked 27 hours last week. If she gets paid $12/hour, what is her gross pay?

kupik [55]

Answer:

324

Step-by-step explanation:

you would multiply 27 × 12 and that would equal 324

8 0

2 years ago

Soham's video game system measures 8 inches long, 6 inches wide, and 2 inches tall. Sean's video game system measures 1 inch lon

Lady_Fox [76]

Answer:

Combined volume of the two game systems $=416$ cubic inches

Step-by-step explanation:

Volume of a cuboid = length × breadth × height

Soham's video game system measures 8 inches long, 6 inches wide, and 2 inches tall.

So,

Volume of Soham's video game system = 8 × 6 × 2 = $96$ cubic inches

As Sean's video game system measures 1 inch longer on all sides,

the video game system measures $8+2=10$ inches long, $6+2=8$ inches wide, and $2+2=4$ inches tall.

Volume of the video game system = 10 × 8 × 4 = $320$ cubic inches.

Therefore,

Combined volume of the two game systems = $96+320=416$ cubic inches

5 0

2 years ago

5x - 2y = 10 x + 4y = 2

chubhunter [2.5K]

Answer:

(2, 0 )

Step-by-step explanation:

Given the 2 equations

5x - 2y = 10 → (1)

x + 4y = 2 → (2)

Multiplying (1) by 2 and adding to (2) will eliminate the y- term

10x - 4y = 20 → (3)

Add (2) and (3) term by term to eliminate y

11x + 0 = 22

11x = 22 ( divide both sides by 11 )

x = 2

Substitute x = 2 into either of the 2 equations and solve for y

Substituting into (1)

5(2) - 2y = 10

10 - 2y = 10 ( subtract 10 from both sides )

- 2y = 0, so

y = 0

solution is (2, 0 )

4 0

3 years ago