Use the diagram below to answer questions 1-3. 60 C b If a=5, then the value of b is 2.9 8.7 C 17.3 D 5.8 2. If C= 10. then the exact value of b is B 5 с A 5.8 D 17.3 3. If b=7, then the value of a is 3.5 С 14 12.1 A B 4.04​

1. A

2. B

3. D

Sort of explanation:

This is a 30° 60° 90° triangle, so the rules below apply:

x is the short leg of the triangle, located across from the 30° angle. (In this problem, the short leg is labled b)

The hypotenuse leg is across from the right angle, and is always 2x (In this problem, the hypotenuse leg is labled c)

The long leg of the triangle is located across the 60° angle and is always x√3. (in this problem, the long leg is labeled a)

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.