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julia-pushkina [17]
3 years ago
9

Find the volume of a sphere with a surface area of 3600pi in squared.

Mathematics
1 answer:
Anna71 [15]3 years ago
5 0

Answer:

36000pi

Step-by-step explanation:

V = 4/3*pi*r^3  so we need to know r

we know surface area, which is 4pi*r^2=3600pi.  so we can solve for r

r=30

so v = 4/3*pi*30^3 = 36000pi

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Part A: Determine if the expression is one of our special products. If so, identify it by its general form:
kondaur [170]

Answer:

1.

Part A: Yes, it is (a - b)².

Part B: a² - 2ab + b² => (x - 6)² = x² - 12x + 36.

Part C: x² - 12x + 36.

2.

Part A: Not a special product.

Part B: Binomial distribution => (x + 8)(x + 1) = x² + 9x + 8.

Part C: x² + 9x + 8.

3.

Part A: Yes, it is (a + b)²

Part B: a² + 2ab + b² => (3x + 2)² = 9x² + 12x + 4.

Part C: 9x² + 12x + 4.

4.

Part A: Yes, it is (a + b)(a - b), a difference of squares.

Part B: a² - b² => 4x² - 49

Part C: 4x² - 49

5.

Part A: Not a special product.

Part B: Binomial distribution => (x - 5)(2x - 5) = 2x² - 15x + 25.

Part C: 2x² - 15x + 25

6 0
3 years ago
Please help me with this I’ll make you as brainlist
Arlecino [84]

Answer:

x = 3\sqrt{13} = 10.8

Step-by-step explanation:

Both problems are done the same way.  I will do the first one and you do the second one.  OK?

Move the radius x to make a right triangle.  The 6 unit segment bisects the chord.  So, the legs of the right triangle are 6 and 9

The use the Pythagorean theorem to find x, which is the hypotenuse of the right triangle.   Now,

6^{2}  + 9^{2}  = x^{2}

x^{2} = 36 + 81 = 117\\x = \sqrt{117} = 3\sqrt{13}= 10.8

None of the answer choices are to the nearest tenth.  So, I am confused about that.

In  the second problem, the answer should be 11.2

5 0
3 years ago
The measure of a square wall is 9 feet 7 inches on each side. Estimate the square feet a painter would have to cover to the near
Nookie1986 [14]
First, convert those inches to feet. 
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(you find this by dividing 7/12 on a calculator)
Now you just square 9.583333333
9.583333333^2
9.583333333 * 9.583333333
91.84027777ish
Rounded to the nearest foot, means the answer is 92ft.
5 0
3 years ago
A spinner is divided into five colored sections that are not of equal size: red, blue, green, yellow, and purple. The spinner is
kakasveta [241]

Answer:

10/54 = 0.185

8 0
3 years ago
The tire of franks bike moves 75inchs in one rotation. How many rotations will the tire have made after 50 ft
natima [27]

convert 50ft to inches which is 600


then divide 600 by 75 = 8 rotations

5 0
3 years ago
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