A.) Substitute the values into the vertical motion formula h=-16t^2+vt+c. Let h=0
B.) Use the quadratic formula find out how long the rocket will take to hit the ground after it is launched. Round to the nearest tenth of a second.
1.)0= -16t^2 + 135t + 76; 0.5 s
2.)0= -16t^2 + 135t + 76; 9 s
Answer:
The answer is 2.)
Step-by-step explanation:
Given initial velocity=135 ft/s
& cliff=76 foot
Given quadratic equation
⇒ (let h=0 it is given)
⇒
⇒
⇒ t=8.96≈9 s (the other root is negative)
Hence, rocket will take 9 s to hit the ground after launched.
The expression is 10 is 50 percent of 20
From the question, we have the following parameters that can be used in our computation:
10 is 50 percent of what number
Represent the percentage with x
So, we have
10 is 50 percent of x
Mathematically, we have
50% * x = 10
So, we have
x = 10/50%
Express percentage as decimal
x = 10/0.50
Evaluate the expression
x = 20
Hence, the number in the percentage is 20
Read more about percentage at
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Answer:
20
Step-by-step explanation:
20/2=10
anything divided by 2 will be half of the original number
Answer:
Step-by-step explanation:
The sum of the co interior angles is 180 degrees