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3 years ago

Please help me with this answer

Mathematics

1 answer:

Inessa [10]3 years ago

4 0

Answer:

143

Step-by-step explanation:

y and 37° angles are supplementary, so

y + 37 = 180

y = 180 - 37 = 143

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Solve. X = -7 4x - 4y = 12 (x,y)

Fynjy0 [20]

Answer:

(-7, -10)

$x=-7\\y=-10$

Step-by-step explanation:

$4x-4y=12$

Substitute x for -7.

$4(-7)-4y=12$

Multiply 4 by -7.

$-28-4y=12$

Add 28 on both sides.

$-4y=40$

Divide -4 on both sides.

$y=-10$

4 0

3 years ago

Suppose that y varies directly with x and y = 10 when x = 20. What is y when x = 15?

tresset_1 [31]

Answer: y = 7.5

Step-by-step explanation:

Suppose that y varies directly with x

That is, y∝x

Convert y∝x to a full equation by introducing a constant k to the right hand side.

Therefore, y = kx

Given that y = 10 and x = 20

Substitute y and x in the equation above. We have;

10 = k(20)

10 = 20k

20k = 10

k = 10/20

k = 0.5

Since k = 0.5, the equation y = kx becomes y = 0.5x

Now, to find y if x = 15, substitute x in equation y = 0.5x

Therefore, y = 0.5(15)

y = 7.5

5 0

3 years ago

What is the range of the function y = x 2?

garik1379 [7]

Answer:

The range of the function y = x2 is all real numbers, y, such that y ≥ 0. In the case of the function y = x2, the domain consists of all real numbers, because there is no number that, when plugged in for x into x2, would create an undefined expression.

Step-by-step explanation:

7 0

3 years ago

Solve the equation. Check your answers. 29=7x+5-4x

Vladimir [108]

Answer:

x = 8

Step-by-step explanation:

29=7x + 5 -4x

add like terms: 29 = 3x +5

get your x variable on one side

24 = 3x

divide by 3

x = 8

check!

29 = 7(8) + 5 -4(8)

29 = 56 + 5 -32

29 = 51 - 32

29 = 29

6 0

3 years ago

Find the sum −1/2(7z+4)+15(5z−15)

sattari [20]

Answer: $\frac{143x - 453}{2}$

Step-by-step explanation:

4 0

3 years ago

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