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finlep [7]
3 years ago
12

If you double the radius of a sphere. what happens to the surface area? Write equations to prove your answer

Mathematics
1 answer:
ValentinkaMS [17]3 years ago
6 0

Answer:

The surface area is multiplied by 4.

Step-by-step explanation:

The surface area is a squared value, so if the radius is multiplied by 2, the surface area is multiplied by 2 squared, or in other words, 4. I love geometry. I'm sure it is correct.

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Find the coefficient of the x^3 in the expansion of (2x-9)^5
il63 [147K]

Use the binomial theorem:

\displaystyle (2x-9)^5 = \sum_{k=0}^5 \binom5k (2x)^{5-k}(-9)^k = \sum_{k=0}^5 \frac{5!}{k!(5-k)!} 2^5 \left(-\frac92\right)^k x^{5-k}

The <em>x</em> ³ terms occurs for 5 - <em>k</em> = 3, or <em>k</em> = 2, and its coefficient would be

\dfrac{5!}{2!(5-2)!} 2^5 \left(-\dfrac92\right)^2 = \boxed{6480}

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A man bought a house for 3600 Naira he repairs the house with 150 Naira if he sold the house for 4950 Naira . Find his percentag
kozerog [31]

Step-by-step explanation:

profit%=

\frac{selling \: price - cost \: price}{cost \: price}  \times 100\%

\frac{4950 \: naira - 3600 \: naira + 150 \: naira}{3750 \: naira}  \times 100\%

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3 years ago
Expression that is equivalent to 27e+24
Goryan [66]

Answer:

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Step-by-step explanation:

the highest common factor is 3 so factor it out.

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kifflom [539]

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is number 6

Step-by-step explanation:

the greatest common factor is the largest common factor of those.

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