3 years ago

Prove that the value of expression 9^7+3^12 is divisible by 90.

1 answer:

3 0

9^7=4782969 and 3^12=531441 and when you add 4782969 and 531441 together you get 5314410. Then divide that number by 90 and get 59049

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The region bounded by the given curve is rotated about the specified axis. find the volume v of the resulting solid by any metho

Blababa [14]

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3 years ago

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AnnyKZ [126]

K= 2

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Xelga [282]

Answer:

C. 43

Step-by-step explanation:

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3 years ago

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Vera_Pavlovna [14]

She is 31

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F3-J4=31
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5 0

2 years ago

Find the area of the shaded region given the radius of each circle is 4. Answer in exact form is preferred.

larisa [96]

In each circle, we have a sector that subtends an angle of 270 deg at the center, with a radius of 4

We can obtain the area of each sector as :

$\begin{gathered} \text{Area of sector = }\frac{\theta}{360^0}\text{ }\times\text{ }\pi r^2 \\ =\text{ }\frac{270^0}{360^0}\text{ }\times\text{ }\pi\text{ }\times4^2 \\ =\text{ 37.7 square units} \end{gathered}$

Given that there are 4 of such sectors, we have:

$\begin{gathered} \text{Area of shaded region = 4 }\times\text{ 37.7} \\ =\text{ }150.8\text{ square units} \\ =\text{ 151 square units} \end{gathered}$

Answer = 151 square units

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1 year ago