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Nutka1998 [239]

3 years ago

15

Two cars pass on a straight highway while traveling in opposite directions. One car is traveling 6 miles per hour faster than th

e other car. After 1.5 hours the two cars are 159 miles apart. Find the speed of each car.

1 answer:

andriy [413]3 years ago

5 0

The second car is going 153mph

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Answer:

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Step-by-step explanation:

Width=(Length-2) units

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Subtracting 35 both sides:

$L^2-2L-35=0$

Solving the quadratic equation for 'L' ;

Using factorization:

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Taking common from the equation :

$L(L+5)-7(L+5)=0\\\\(L+5)(L-7)=0\\\\L+5=0\\\\L=-5$

OR

$L-7=0\\\\L=7$

The length cannot be negative, therefore Length(L)= 7

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$Length=7units\\\\Width=5units$

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