All categories

3 years ago

Use the substitution method to solve the system of equations

Mathematics

1 answer:

Sergeeva-Olga [200]3 years ago

8 0

Answer:

x=1/4

y = -2

(1/4, -2)

Step-by-step explanation:

4x -y =3

y =-8x

substitute y =-8x into the first equation. Everywhere you see y put 8x

4x -y =3

4x - (-8x) =3

4x+8x=3

combine like terms

12x = 3

divide by 12

12x/12x = 3 /12

x = 1/4

now we need to find y

y = -8x

y = -8 * 1/4

y = -2

You might be interested in

Suppose a triangle has sides a, b, and c, and let theta be opposite the side of length a. If cos theta < 0, what must be true

katrin2010 [14]

If $\cos \theta\ \textless \ 0$ , then angle $\theta$ is obtuse and triangle with sides a, b, c is obtuse triangle.
In an arbitrary triangle can be only one obtuse angle, and the side which lies opposite to the largest angle is the largest. Then since <span>angle $\theta$ is opposite the side of length a</span> you can conclude that a>c and a>b.

6 0

4 years ago

a business want to increase its number of employees by 65% to 20,460. How many employees does the company currently have?

Crazy boy [7]

Answer:

12,400

Step-by-step explanation:

Let the current employees be x

65% increase in number = 0.65x

If the total number of employees after the increase is 20,460, then;

x + 0.65x = 20,460

1.65x = 20,460

x = 20,460/1.65

x = 12,400

Hence the current number of employees is 12,400

5 0

3 years ago

PLEASE HELP!! WILL MARK BRAINLIEST!!!

Rus_ich [418]

Answer:

that looks tuff my boy good luck

Step-by-step explanation:

7 0

3 years ago

What is the square route of 5?

denis-greek [22]

Square root are the same 2 numbers multiplied.

Ex: 8*8=64 (Square root is 8)

9*9=81 (Square root is 9)

2.2360679775*2.2360679775=5

Answer=2.2360679775

6 0

3 years ago

Simplify 3(2 - c) - C

kondor19780726 [428]

Answer:

6-3c-C

Step-by-step explanation:

3(2-c)-C

3(2)-3(c)-C

6-3c-C

7 0

3 years ago

Read 2 more answers