Question

a walkway rises 4.5 ft for every 10 ft on the horizontal. find its slope (or grade). a. 20 b. 0.45 c. 2000% d. 4.5% e. 4.5 f. 4.5/10 g. 9/20 h. 45%

Explanation:

Step1: Recall slope formula

The slope (or grade) is the ratio of the vertical change (rise) to the horizontal change (run). Given rise = 4.5 ft and run = 10 ft, the slope as a ratio is $\frac{4.5}{10}$.

Step2: Convert to percentage

To convert the ratio to a percentage, multiply by 100. So, $\frac{4.5}{10}\times100 = 45\%$.

Answer:

D. $\frac{4.5}{10}$, H. 45%