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Archy [21]
3 years ago
14

Evaluate 5x2−9 when x=−2

Mathematics
1 answer:
Elena-2011 [213]3 years ago
3 0

answer: 11

explanation: just plug in -2 for x. the new problem becomes 5(-2)^2 - 9. Negative two squared is 4. 5 times 4 is 20. 20 minus 9 is 11.

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A loan shark lends you $50 at 3% compound interest per week (this is a weekly, not an annual rate.) Round your answers to the ne
shutvik [7]

Answer:

(a) Amount owed after 2 years is $ 1081.54

(b) The shark's vig is $ 1031.54

Step-by-step explanation:

(a)

The amount on a principal, <em>P</em>, after a period, <em>T</em>, at a compound interest, <em>R</em>, is given by

A = P\left(1+\dfrac{R}{100}\right)^T

From the question,

<em>P</em> = $ 50

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A = \$\,50\left(1+\dfrac{3}{100}\right)^{104} = \$\,50(1.03)^{104} = \$\,1081.54

(b)

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5 0
4 years ago
What is 37/10 as a mixed number?
Dafna11 [192]
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Answer:  3  \frac{7}{10}
3 0
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Answer:

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3 years ago
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