Question

Nisha did the work below to solve an equation.

Step 1 7 b + 3.2 b minus 5 = 18.92
Step 2 10.2 b minus 5 = 18.92
Step 3 5.2 b = 18.92
Step 4 b = 3.64

In which step did Nisha make her first error?
Step 1
Step 2
Step 3
Step 4

Answer 1

Step 1

Answer 2

Last winter Armand had StartFraction 5 Over 6 EndFraction of a row of stacked logs. At the end of the winter he had StartFraction 8 Over 15 EndFraction of the same row left. How much wood did he burn over the winter?

1 and StartFraction 9 Over 16 EndFraction rows
1 and StartFraction 11 Over 30 EndFraction rows
StartFraction 4 Over 9 EndFraction row
StartFraction 3 Over 10 EndFraction row

Answer 3

Armand had burned:

1 and StartFraction 9 Over 16 EndFraction rows - 1 and StartFraction 11 Over 30 EndFraction rows = StartFraction 4 Over 9 EndFraction row

So Armand had burned StartFraction 4 Over 9 EndFraction of the row.

Answer 4

What is the first step in solving the equation 3.5 n + 6.4 = 42.5?
Add 6.4 to each side of the equation.
Subtract 6.4 from each side of the equation.
Multiply each side of the equation by 3.5.
Divide each side of the equation by 6.4.

Answer 5

Subtract 6.4 from each side of the equation.

Answer 6

Which is the solution to the equation 8.25 + one-fourth w = 10.75? Round to the nearest hundredth if necessary.
0.63
4.75
10
76

Answer 7

4.75