Answer:
5 seconds
Step-by-step explanation:
H= -16t2 + 400
Hit ground
H=0
0 = -16t2 + 400
0 = -16 ( t2 - 25)
-16
t2 -25 = 0
(t + 5)(t - 5) = 0
t + 5 = 0
- 5 -5
t = -5
t - 5 = 0
+ 5 +5
t = -5
t = 5
5 seconds to hit the ground
Answer:
x=3 and x=-1.25
Step-by-step explanation:
4x^2-7x=15
subtract 15 from each side:
4x^2-7x-15=0
factor (trying different numbers that the sum is 7 and the quotient is 15)
(2x-6 )(2x+2.5 )=0
2x-6=0 add 6 to each side
2x=6
x=3
2x+2.5=0 subtract 2.5 from each side
2x=-2.5
x=-1.25
Answer:
ㅇㅅㅇ흐ㅜㄴㅅ
Step-by-step explanation:
ㅇㅅㄷㅈㅅ드ㅜㄱㅅ,,,ㅎ：ㄴㅅ
A. 11 years old
11 x 2 = 22 - 3 = 19 + 11 = 30
Mike was 3 years TWICE Jasmines age and they made 30 years together
Answer:
D and B
Step-by-step explanation:
