Solve each problem as indicated. type your answer in the box.

(5) + (–12) =

-7

Step-by-step explanation:

To add a positive number and a negative number follow these steps.

1. Ignore the signs and consider both numbers positive. You have 5 and 12.

2. Subtract the smaller number from the larger number. If the numbers are equal, subtract one number from the other. In this case, you have 12 - 5 = 7.

3. The sign of the answer is the same sign as the larger positive number's original sign. Here, the larger positive number is 12. 12 was originally -12, a negative number, so the final answer is negative. (5) + (-12) = -7

-7

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm