Answer:
4/1 or 4
Step-by-step explanation:
when graphing perpendicular lines, the slopes are reciprocals of eachother
294 square units
35^2-21^2=a^2
a^2=784
square root 784=28
21*28/2=294
Answer=294
Answer: 30 feet
10 / 2.5 = 4
7.5 * 4 = 30
