302.833 rounded to the nearest whole number
2 answers:
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Answer:
Step-by-step explanation:
opp=x,hyp=10
sin 53°=
cross multiply
sin 53° x 10 =x
0.7986 x 10=x
7.98=x
x≅ 8.0
The rock will hit the ground when y=0, so we need to solve this equation for its roots. To do that, we set it equal to 0:
Divide everything by -0.005 to clear out the decimals:
Now use the quadratic formula:
or 
We want the larger x value since the smaller one is when the rock will reach the top of the hole.
Divide everything by -0.005 to clear out the decimals:
Now use the quadratic formula:
We want the larger x value since the smaller one is when the rock will reach the top of the hole.