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emmainna [20.7K]

3 years ago

11

How do i find the solution to x+y= -2 y=x+2

1 answer:

olga2289 [7]3 years ago

4 0

Answer:

x = -2 and y = 0

Explanation:

You just put the value of one variable in terms of the other in one of the two equations. Then, solve it and BOOM you'll have your solution.

x + y = -2 ........... (a)

y = x + 2 ............ (b)

Put (b) in (a),

x + (x + 2) = -2

2x = -4 => x = -2

Put x = -2 in (b),

y = x + 2 = -2+2 = 0

Thus, x=-2 and y=0

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3 years ago

Please someone help with my math

Pepsi [2]

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Step-by-step explanation:

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4 years ago

CAN SOMEONE PLEASE HELP ME????

pochemuha

Answer:

$C.\{-4,-2,~0,~2,~4\}$

Step-by-step explanation:

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4 0

3 years ago

A bicycle training wheel has a radius of 3 inches. The bicycle wheel has a radius of 10 inches. Approximately how much smaller,

zhuklara [117]

Answer:

$285.74\text{ inch}^2$

Step-by-step explanation:

GIVEN: A bicycle training wheel has a radius of $3\text{ inch}$ . The bicycle wheel has a radius of $10\text{ inch}$ .

TO FIND: Approximately how much smaller, in square inches, is the area of the training wheel than the area of the regular wheel.

SOLUTION:

radius of bicycle wheel $=10\text{ inch}$

area of bicycle wheel $=\pi r^2$

putting value,

area of bicycle wheel $=3.14\times10^2$

$=314\text{ inch}^2$

radius of bicycle training wheel $=3\text{ inch}$

area of bicycle training wheel $=\pi r^2$

putting value,

area of bicycle wheel $=3.14\times3^2$

$=28.26\text{ inch}^2$

difference in area of bicycle wheel and bicycle training wheel

$=\text{area of bicycle wheel}-\text{area of bicycle training wheel}$

$=314-28.26$

$=285.74\text{ inch}^2$

hence the training wheel is $285.74\text{ inch}^2$ smaller than regular wheel

4 0

3 years ago

Solve for x. 6x + 9 + 4x + 2 = 21

Pie

Answer:

$6x + 9 + 4x + 2 = 21 \\ 6x + 4x + 11 = 21 \\ 10x + 11 = 21 \\ 10x = 21 - 11 \\ 10x = 10 \\ x = \frac{10}{10} \\ x = 1$

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5 0

3 years ago

Read 2 more answers