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2 years ago

8

the population of staten island is 7.610^3. the population of Brooklyn is 2.310^5. how many people are there in Brooklyn and S

taten Island?

1 answer:

nydimaria [60]2 years ago

7 0

7.6*10^3+2.3*10^5=7600+230000= 237600.

There are 237600 people living in Brooklyn and Staten Island.

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4, 12, 20 what the common diffrence?? help im timed

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If u were to continue it, 20 + 8 = 28 and so on!
The difference is the sum of the number totalled.

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2 years ago

if the height of the cylinder with a radius of 12 cm and a height of 20 cm has the same volume as a cone with a radius of 8 cm.

Marrrta [24]

Answer:

$\large\boxed{H=135\ cm}$

Step-by-step explanation:

The formula of a volume of a cylinder:

$V=\pi r^2H$

r - radius

H - height

We have the radius r = 12cm and the height H = 20cm. Substitute:

$V=\pi(12^2)(20)=\pi(144)(20)=2880\pi\ cm^3$

The formula of a volume of a cone:

$V=\dfrac{1}{3}\pi r^2H$

r - radius

H - height

We have the radius r = 8cm and the volume V = 2880πcm³. Substitute:

$\dfrac{1}{3}\pi(8^2)H=2880\pi\qquad\text{divide both sides by}\ \pi\\\\\dfrac{1}{3}(64)H=2880\qquad\text{multiply both sides by 3}\\\\64H=8640\qquad\text{divide both sides by 64}\\\\H=135\ cm$

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2 years ago

With instructions too please

irga5000 [103]

Answer on pic above

Hope this helps

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