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Usimov [2.4K]
3 years ago
12

Visit CK12.org for Free Online Practice

Mathematics
1 answer:
rjkz [21]3 years ago
6 0

Answer:

C) 154

Step-by-step explanation:

-14+7x^2-7

-14+7(5)^2-7

-14+7*5*5-7

-14+7*25-7

-14+175-7

161-7

154

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If y varies inversely as x and y=-9 when x=-11, find y when x=66
Furkat [3]

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Step-by-step explanation:

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If 45% of a number, n, is 225, what is 74% of n?<br><br> A. 185<br> B. 298<br> C. 370<br> D. 406
Stolb23 [73]

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Step-by-step explanation:

4 0
3 years ago
Log14/3 +log11/5-log22/15=log
Tamiku [17]

Answer:

log7

Step-by-step explanation:

when adding logs, apply the log rule: \log _a\left(x\right)+\log _a\left(y\right)=\log _a\left(xy\right)

∴  \log\left(\frac{14}{3}\right)+\log\left(\frac{11}{5}\right)=\log\left(\frac{14}{3}\cdot \frac{11}{5}\right)

when subtracting logs, apply the log rule: \log _a\left(x\right)\:-\:\log _a\left(y\right)=\log _a\left(\frac{x}{y}\right)

\log\left(\frac{14}{3}\cdot \frac{11}{5}\right)-\log\left(\frac{22}{15}\right)=\log\left(\frac{\frac{14}{3}\cdot \frac{11}{5}}{\frac{22}{15}}\right)\\\\=\log\left(7\right)

5 0
2 years ago
Read 2 more answers
Solve for x and explain your answer
Dovator [93]
75+37=112. 180-112=68. 68-7=61. 61/5=12.2. so x=12.2
5 0
3 years ago
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