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maks197457 [2]
3 years ago
15

Solve the following quadratic equation using the quadratic formula. −2y^2+5=7y

Mathematics
1 answer:
Vikki [24]3 years ago
3 0

Answer:

y=(7±√89)/-4

Step-by-step explanation:

y=(-b±√b^2 -4ac)/2a

Rewrite given equation in quadratic form so it is -2y-7y+5=0

Then, in formula, sub -2 for a, -7 for b, and 5 for c

y=-(-7)±√(-7)^2 -4(-2)(5)/2(-2)

When you multiply that out you get

7±√49-(-40)/-4

The next step is the answer given above

If you need the answer not in sq rt form, it is y=-4.1085 and y=0.0608

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A medical plan requires a patient to pay a $25.00 copay plus 20% of all charges incurred for a medical procedure. If the average
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Calculating for X in equation 2:

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What fraction is equivalent to 123.5℅
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