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Masja [62]
3 years ago
11

7. Larry has $389.00. A DVD player costs $97.00, and he can purchase used movies for $11.55 each. What is

Mathematics
2 answers:
ivann1987 [24]3 years ago
6 0
He can buy the most is 25 movies
e-lub [12.9K]3 years ago
3 0

Answer:

$97.00+$11.55x≤ $389.00 (first subtract 97 from 389)

11.55x≤$292.00 (now divide 292 by 11.55)

x≤ 25

Larry can get at most 25 movies

Step-by-step explanation:

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ax^2+bx+c=0
if m and n are zeros, then:
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substitute
m+n=\dfrac{-(-5)}{a};\ mn=\dfrac{c}{a}\\\\ \left\{\begin{array}{ccc}\dfrac{5}{a}=10&\to a=\dfrac{1}{2}\\\\\dfrac{c}{a}=10\end{array}\right
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Answer:  \boxed{a=\dfrac{1}{2};\ c=5}


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