Answer:
t=4 seconds
Step-by-step explanation:
The height of the water jacket that is projected vertically upward is given by the equation:
We want to find the time that, the rocket reaches the ground.
When the rocket reaches the ground, the height , h becomes 0.
This implies that:
Subtract 20 from both sides:
Divide through by -5;
Take square root:
l
Therefore the feasible time is after 4 seconds.
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Answer:
x=3
Step-by-step explanation:
start with 7x=21
divide each side by 7 to get your answer:
x=3
Answer:
d=7, b -13+7n c 71
Step-by-step explanation:
a= - 6
2nd term=a+(n_1)d
a+d
1+6
=7
b tn a-(n_1)d
_6+(n_1)d
_6 +7n_7
_13+7n
tn a+11d
6+11(7)
6+77
=83