Solving Equations - Math 9

Solve: 2.5r = 7.5

• r=5

• r=10

• r=3

• r=18.75

Solve: -5q = 18

• q = 23

• q = -3.6

• q = 13.6

• q = -90

solve:  $\frac{-3b}{10\ \ }\ =\ -2.2$  

• b = 0.66

• b = -0.66

• b = 7.333

• b = - 7.333

solve:  $\frac{1.2}{2c\ }=2.4$  

• c = 0.25

• c = 1.44

• c = 1

• c = 4

Write an equation for this statement: A number divided by 3, plus 5, is 8.

• $\frac{3}{x\ }+5\ =\ 8$

• $\frac{\left(x+5\right)}{3}=8$

• $\frac{x}{3}=5\ +\ 8$

• $\frac{x}{3}+5\ =\ 8$

Solve: 1.6(5x - 12) = -79.52

• x = - 188.5

• x = -7.54

• x = 7.54

• x = -308.5

Solve: -16m - 4 = 24m + 19

• m = 0.575

• m = -0.375

• m = 2.875

• m = -0.575

Solve: -7(1 + 4v) = -3(7v+14)

• v = 17

• v = 5

• v = -15

• v = 3

Tags

CCSS.8.EE.C.7B

A rectangle has a width of r+8 and a length of 9r+5. What is the PERIMETER of the rectangle?

• 2(10r +13)

• 16

• 6

• r+16

What is the value of m, if  $\frac{3m}{4}=7.5$  

• m = 5.625

• m = 1.167

• m = 10

• m = 2.625