Answer:
<u>9.23secs</u>
Step-by-step explanation:
Given the height of the rock modeled by the equation;
h(t)=-6.5t^2+50t
The rock falls back to the surface of the Mars at when the height is zero i.e h(t) = 0
Substitute into the formula and get the time t
h(t)=-6.5t^2+50t
0 = -6.5t^2+50t
6.5t^2 = 50t
6.5t = 50
t = 50/6.5
t = 9.23secs
Hence the rock fall back to the surface of the Mars after <u>9.23secs</u>
son 30 y si sumas con 20 son 96
Answer:
648 sq. in.
Step-by-step explanation:
The ratio of the flag is 1:18 and the question asks for the area of the flag.
To find the actual flag size, you got to multiply the width by 18.
Then you must multiply the length by 18.
A= LxW
A=36 x 18
A= 648 sq. in.
Therefore, the area of the actual flag is 648 sq. in.
Answer:
ABC≅DEF ASA POSTULATE
There must be two angles and one side of ABC congruent to DEF
Step-by-step explanation:
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