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Salsk061 [2.6K]
3 years ago
11

Prove the divisibility of the following numbers: 8^10−8^9−8^8 by 55

Mathematics
1 answer:
EleoNora [17]3 years ago
7 0

Explanation:

8^10 -8^9 -8^8 = 8^8·(8^2 -8 -1) = 8^8·(64 -8 -1) = 8^8·55

Any multiple of 55 is divisible by 55.

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Right and solve a proportion to answer the question what percent of 25 is 12
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Answer:

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Step-by-step explanation:

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Could you please help me with this? It’s a problem from my grandson’s homework.
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SOLUTION

From the question given, the cost of the toy truck is $36.50 before tax.

Now, the store selling the toy truck adds a 6% sales tax. This means

\begin{gathered} 6\%\times36.50 \\ =\frac{6}{100}\times36.50 \\ =\frac{6\times36.50}{100} \\ =\frac{219}{100} \\ =2.19\text{ dollars} \end{gathered}

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\begin{gathered} 10\%\times38.69 \\ \frac{10}{100}\times38.69 \\ =\frac{10\times38.69}{100} \\ =\frac{386.9}{100} \\ =3.869 \end{gathered}

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\begin{gathered} 38.69-3.869 \\ =34.821 \end{gathered}

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1 year ago
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<span>Initial value: 12, rate of change: −2

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Answer C.
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