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gtnhenbr [62]
4 years ago
6

Use substitution to solve the system of equation. 2x+2y=8 x+y=-2

Mathematics
1 answer:
eimsori [14]4 years ago
5 0

Answer:

Step-by-step explanation:

find the value of y in the second equation

x + y = -2,

but y = -2-x as well

so take the value that we have found for (x) into the first equation

2x + 2(-2-x)= 8

-2x + -4-2x = 8

-4x-4=8

-4x = 12

x=-3,

now just substitute x value into either equation

x + y =-2

-3 + y = -2

y =1

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The volume of a cube is V= S^3 where V is the volume and s is the length of one side what is the volume of a cube if the length
sammy [17]

The volume of cube is 1000 cubic feet

<em><u>Solution:</u></em>

Given that,

<em><u>The volume of cube is given by formula:</u></em>

V = s^3

Where,

V is the volume of cube

"s" is the length of one side

<em><u>What is the volume of a cube if the length of a side s is 10 feet</u></em>

Given, s = 10 feet

<em><u>Substitute s = 10 in given formula,</u></em>

V = 10^3\\\\V = 10 \times 10 \times 10\\\\V = 1000

Thus volume of cube is 1000 cubic feet

7 0
3 years ago
How many liters is 250,000 cm3?
eimsori [14]
Once cubic centimeter = 1 milleter

1 mL = 1000 L

250,000 ÷ 1000 = 250

There are 250 liters in 250,000 cubic centimeters.
3 0
3 years ago
Read 2 more answers
Write the equation of the line passing through the points (2,-5) and (7,-3).
Grace [21]

Answer:

5y·2x=21

<em>\frac{y - y1}{y2 - y1}  =  \frac{x - x1}{x2 - x1}</em>

Step-by-step explanation:

using the formula above,you will find the equation 5y–2x=21

7 0
3 years ago
What is the scale factor from triangle PRQ to triangle SUT
Alex

Answer:

Scale factor is 1.5

Step-by-step explanation:

ST = PR

10/15

= 1.5

8 0
3 years ago
Please put the correct answer thank you :)
MatroZZZ [7]

Answer:

The answer to your question is: letter D

Step-by-step explanation:

Data

f(x) = x³ - 9x

g(x) = x² - 2x - 3

Process

               \frac{x^{3}- 9x }{x^{2} - 2x - 3}

Factor both numerator and denominator

    \frac{x(x^{2}-9) }{x^{2} - 2x - 3} = \frac{x(x + 3)(x-3)}{(x - 3)(x + 1)}

Simplification

                          \frac{x(x + 3)}{(x + 1)}      

7 0
3 years ago
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