4 years ago

What is the surface area of the cylinder in terms of pi? The diagram is not drawn to scale.

Mathematics

1 answer:

bearhunter [10]4 years ago

3 0

Surface Area = 2πr² + 2πrh

Surface Area = 2π(7)² + 2π(7)(15) = 308π in²²

Answer: 308π in²

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Write the first five terms of the geometric sequence in which a1=64 and the common ratio is 5/4

natita [175]

Remember that finding terms in a geometric sequence is done by multiplying the previous term by a common ratio $r$ . For example, we can say:

$a_2 = a_1 r$

$a_3 = a_2 r = (a_1 r)r = a_1 r^2$

We have $a_1 = 64$ . To find $a_2$ , let's multiply this term by $\frac{5}{4}$ :

$a_2 = 64 \cdot \frac{5}{4} = 80$

Now, let's use this to find all of our other terms:

$a_3 = 80 \cdot \frac{5}{4} = 100$

$a_4 = 100 \cdot \frac{5}{4} = 125$

$a_5 = 125 \cdot \frac{5}{4} = \frac{625}{4}$

Thus, our terms are 64, 80, 100, 125, and (625/4).

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3 years ago

Dan will be 8X years next year. how old was Dan five years ago. give your answer in terms of X

morpeh [17]

If Dan is 8x years old next year then he must be 8x-1 years old this year
With the same logic, five years ago from this year, he must be 8x-1-5=8x-6

The answer should be 8x-6

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3 years ago

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Lunna [17]

Answer:

y = 9.6

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AveGali [126]

Answer:

$the \: answer \: is \: \\ y - 7 = 1(x - 4) \\ y - 7 = x - 4 \\ or \: in \: other \: way \: \\ y = x+ 3$

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