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2 years ago

12

a speeding ticket cost $94.50 plus $2 for every mile over the speed limit. BRANDY ticket cost her 112.50. how many miles over th

e speeding limit was brandy traveling

2 answers:

Novosadov [1.4K]2 years ago

7 0

She drove 9 miles over the speed limit.

94.50 + 2m = 112.50
Subtract 94.50 from both sides

2m = 18
Divide both sides by 2

m = 9

gladu [14]2 years ago

4 0

Answer:

18 miles

Step-by-step explanation:

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3 years ago

Use the discriminant to determine how many solutions are possible for the following equation?(show work)

Gwar [14]

Answer:

see the explanation

Step-by-step explanation:

<u><em>The correct question is</em></u>

Use the discriminant to determine how many solutions are possible for the following equation (show work).

5x^2-3x+4=0

we know that

The discriminant for a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$D=b^2-4ac$

If D=0 then the equation has only one real solution

If D>0 then the equation has two real solutions

If D<0 then the equation has no real solutions (two complex solutions)

in this problem we have

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so

$a=5\\b=-3\\c=4$

substitute

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$D=-71$

so

The equation has no real solutions, The equation has two complex solutions

therefore

I know there are___No____

real solutions to the equation in problem 4 because ___the discriminant is negative___

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3 years ago