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3 years ago

Find the surface area of a sphete with radius 10 in leave your answer in terms of x

Mathematics

1 answer:

Wittaler [7]3 years ago

7 0

Surface area of a sphere is 4πr².

4πr² = 4*10²*r²= 400π

Answer is 400π.

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Cody has $700 in a savings account that pays 4% simple interest. How much will he have in 1 year?

ladessa [460]

Answer:

$ 728

Step-by-step explanation:

Amount of Money Cody has = $700

Simple Interest = 4%

As it is know that interest is always given on annually basis so

Amount of profit he have in one year = Money he have right now * interest

=700 * 4%

= $700 * \frac{4}{100}$

= $ 28

After one year he will have = total money at that time + Profit

= 700 + 28

= $ 728

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3 years ago

What is -7/12 + 3/8?

inna [77]

Answer:

- $\frac{5}{24}$

Step-by-step explanation:

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3 years ago

Write down the 1st term in the sequence given by: T(n)=n2(squared) +3

Citrus2011 [14]

(n) stands for natural number. Natural numbers are counting numbers such as 1, 2, 3, 4, 5, 6, 7 etc...

So the first term in the sequence would be:

T(1)=1^2 + 3 = 1 + 3 = 4

Answer:

4

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3 years ago

Complete the identity. cos (alpha - beta)/cos alpha cos beta=?

Gnoma [55]

When you see a formula like this, try to operate, so you will see some identities sooner or later. In this case, we have a substraction identity:

$\frac{cos ( \alpha - \beta )}{cos \alpha cos \beta }$ = $\frac{cos \alpha cos \beta + sin \alpha sin \beta }{cos \alpha cos \beta }$ = 1 + tan α · tan β

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4 years ago

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