MATH SOLVE

4 months ago

Q:
# 1.9x=3x-36 Solve for X2. 9z+10=1-3(5-3z) How many solutions does the equation have?3.3y+10/4=2y what is the value of Y4.2x+4=2(x+2) What statement about the equation is true 5.4(z-5) +2 =4z-18 how many solutions does this equation have

Accepted Solution

A:

1.9 * 3 = 27

3 * 3 = 9

36 - 9 = 27

so x = 3

2. 9z + 10 = 1 - 3(5 - 3z)

9z + 10 = 1 - 15 + 9z

9z + 10 = 9z - 14

9z - 9z = -14 - 10

0 = - 24....incorrect

This equation has no solutions....0 solutions

3. Y=2 that's your answer:

Times it by 4:

3y+10 = 2y*4

3y+10 = 8y

Move the 12y over to the other side:

10 = 8y - 3y

10 = 5y

Divide both sides by 5:

10/5 = 5y/5

2 = y

4. The equation has many solutions

5. Distribute the 4:

4z - 20 + 2 = 4z - 18

Subtract 4z

-20 + 2 = -18

-18 = -18

This is true so that means there are infinite number of solutions and z could be anything

Hope this helps!

3 * 3 = 9

36 - 9 = 27

so x = 3

2. 9z + 10 = 1 - 3(5 - 3z)

9z + 10 = 1 - 15 + 9z

9z + 10 = 9z - 14

9z - 9z = -14 - 10

0 = - 24....incorrect

This equation has no solutions....0 solutions

3. Y=2 that's your answer:

Times it by 4:

3y+10 = 2y*4

3y+10 = 8y

Move the 12y over to the other side:

10 = 8y - 3y

10 = 5y

Divide both sides by 5:

10/5 = 5y/5

2 = y

4. The equation has many solutions

5. Distribute the 4:

4z - 20 + 2 = 4z - 18

Subtract 4z

-20 + 2 = -18

-18 = -18

This is true so that means there are infinite number of solutions and z could be anything

Hope this helps!