Rewriting Equations

Which of the following statements explains how to solve for w in the equation A = lw?

Divide both sides by l.

Which of the following statements explains how to solve for l using the formula A = lw, when A = 28 1/4 and w = 2 1/2?

Divided 28 1/4 by 2 1/2

In which of the following solutions would you multiply both sides of the equation by n?

Solve m/n = p for m.

Solve for V in V = s^3, if s = 4.

V = 64

Solve for b in the formula 3a + 2b = c.

b = c-3a/2

Solve for b2 in A = 1/2h (b1 + b2), if A = 16, h = 4, and b1 = 3.

b2 = 5

All of the following are equivalent except ______. dt = r d/t = r d/r = t d = rt

dt = r

Solve for m in D = m/v, if D = 5.1 and v = 0.3.

m = 1.53

Solve for t in d = rt, if d = 57 and r = 30.

t = 1.9

The formula F = 9/5 C + 32 is used to convert Celsius to Fahrenheit temperature. If the temperature is 20°C, what is it in Fahrenheit?

68.0 F

Solve C = AB + D for B. C/A - D = B C+D/A = B AC-D = B C-D/A = B

C-D/A = B

Match the following: 1. What happens to one side of an equal sign must also happen to the other side of the equal sign. 2. Equations and formulas with several variables. 3. Two equivalent expressions connected by an equal sign. 4. Opposite operations that undo one another.

1. Property of equality 2. Literal equations 3. Equation 4. Inverse operations

Using the formula P = F/A, find F if P = 27 and A = 4.

108

Convert 77 degrees in Fahrenheit to Celsius temperature using the formula F = 9/5 C + 32.

25 C

Solve for w in P = 2w + 2l, if P = 38 and l = 12.

w = 7