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Finger [1]
3 years ago
8

Al's awesome autos advertised a special sale on cars - Dealer cost plus 5%!! Jack and Margaret boughta luxury sedan for $23,727.

90. What was the dealers cost?
Mathematics
1 answer:
Marat540 [252]3 years ago
5 0
05/23727.90=100/x
105x=23727.90x100
105x=2372790
(105x)/105=2372790/105
x=22598

dealers cost is $22,598

<span>the 105% is the 100% price of the car plus the 5% of that tax</span>
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Y= -3x^2-24x-46 write in vertex form
mario62 [17]

ANSWER

y= -3{(x + 4)}^{2}  + 2

EXPLANATION

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y= -3x^2-24x-46

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Factor the perfect square trinomial.

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6 0
3 years ago
Find all integers $n$ for which $\frac{n^2+n+1}{n-1}$ is an integer.
Grace [21]
\dfrac{n^2+n+1}{n-1}=\dfrac{(n-1)^2+3(n-1)+3}{n-1}=n-2+\dfrac3{n-1}

The remainder term \dfrac3{n-1} will never vanish, and will always be rational as long as the denominator is not 1, 3, or -3.

n-1=1\implies n=2
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n-1=-3\implies n=-2
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3 years ago
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