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Pie
3 years ago
13

the time t required to drive a certain distance varies inversely with the speed, r. if it takes 4 hours to drive the distance at

40 miles per hour, how long will it take to drive the same distance at 55 miles per hour? a. about 2.91 hours b. about 160.00 c. 22.00 hours d. about 5.50 hours
Mathematics
1 answer:
valina [46]3 years ago
8 0
Hello,

Answer A

d :the distance in miles
t: the time in hours
v: the speed in miles/hours (vistesse)


d=v*t
==>d=40*4=160(mi)

d=55*x=160==>x=160/55=2.909090... (mi/(mi/h)=h)≈2.91(hours)
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(10 points)
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Using this, we have:

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3 years ago
How many variable terms are in the expression 3x3y + 5x2 − 4y + z + 9? (Input a numeric value only.)
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4

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7 0
2 years ago
Sam borrows $5700 at 4.5% simple interest for 3 years. Find the interest
kherson [118]

Answer:

The interest is

<h2>$ 769.50</h2>

Step-by-step explanation:

Simple interest is given by

I =   \frac{P \times  R  \times T}{100}

where

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The principal / P = $ 5700

The rate / R = 4.5%

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So the interest is

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We have the final answer as

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Hope this helps you

3 0
3 years ago
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