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lesya692 [45]
3 years ago
11

The cost to repair a car after a collision was $2,700. The automobile insurance policy paid the entire bill except for a $675 de

ductible, which the driver paid. What percent of the cost did he pay?
Mathematics
1 answer:
dalvyx [7]3 years ago
7 0

Answer:

The driver paid 25% of total repair cost.

Step-by-step explanation:

Cost to repair a car = $2700

Insurance company paid entire bill except for a $675 deductible.

i.e Driver paid the deductible amount = $675

Percentage of cost he did pay = ( Deductible amount/ total cost )  × 100

                                                   = (675/2700) × 100

                                                   = 675 * 100 / 2700

                                                   = 25 %

Hence the driver paid 25% of total repair cost.

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If you've started pre-calculus, then you know that the derivative of  h(t)
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___________________________________________

If you haven't had any calculus yet, then you don't know how to
take a derivative, and you don't know what it's good for anyway.

In that case, the question GIVES you the maximum height.
Just write it in place of  h(t), then solve the quadratic equation
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Subtract 150ft from each side:    -16t²  +  96t  -  144  =  0 .

Before you attack that, you can divide each side by  -16,
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                                                         t²  -  6t  +  9  =  0

I'm sure you can run with that equation now and solve it.    
The solution is the time after launch when the object reaches 150 ft.
It's 3 seconds.  
(Funny how the two widely different methods lead to the same answer.)

The answer is from AL2006

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