692.08 : 21.1
Divide both sides by 21.1
32.8 :1
32.8ft per second
Hope this helps :)
Answer:
3.8
Step-by-step explanation:
h(t) = -4.9 t² + v₀ t + h₀
Given that v₀ = 0 and h₀ = 70:
h(t) = -4.9 t² + 70
When the rock hits the ground, h(t) = 0.
0 = -4.9 t² + 70
4.9 t² = 70
t² = 14.3
t = 3.8
The rock hits the ground after 3.8 seconds.
Answer:
3087000
Step-by-step explanation:
(5\choose 2) we use for how many combination we have when we choose 2 freshmen from set of 5 freshmen.
(7\choose 3) for 3 sophomers of 7 sophomores itc...
The number of all combination is:

Answer: 76%
Step-by-step explanation:
In the first square, all 25 parts are shaded.
In another sqaure, 13 out of 25 qual parts are shaded.
Now, in both the squares
Total parts = 25+25 =50
Total shaded parts = 25+13 = 38
The percent of shaded area = 

Hence, 76% is represented by the shaded area.