3 years ago

If you know the seventh term in an arithmetic sequence and the common difference,

1 answer:

3 0

Yes-because from the 7th term you can either go backwards or forwards to find the number/pattern/letter you need to get to

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Suppose the radius of a sphere is tripled.

Nimfa-mama [501]

$A=4r^2\pi
\\r_1=4r
\\A_1=4r_1^2\pi=4(4r)^2\pi=4\times16r^2\pi=16\times4r^2\pi=16A$
The surface area is increased 16 times.

$V= \frac{4}{3} r^3\pi
\\
\\r_1=4r
\\
\\V_1=\frac{4}{3} r_1^3\pi=\frac{4}{3} (4r)^3\pi=\frac{4}{3} \times64r^3\pi=64\times\frac{4}{3} r^3\pi=64V$
The volume is increased 64 times.

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3 years ago

It's not 15% it's $15

olga nikolaevna [1]

Did you just add an answer too a question? 15% is 0.15

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3 years ago

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Lily baked 13 pies to serve at 2 different parties.

Anna35 [415]

She can serve 6 WHOLE pies at each party

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