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GREYUIT [131]
3 years ago
11

Any help if possible Thank you ❤

Mathematics
1 answer:
Inessa [10]3 years ago
7 0
4/3 * pi * r^3
4/3 * 3.14 * r^3
4/3 * 3.14 * 9.5^3
4/3 *3.14 * 857.375
314/75 * 857.375

Answer: 1076863/300 or 3589.54333
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How to do questions 19 and 20
Alexeev081 [22]

Answer & Step-by-step explanation:

Using the information given in the question we can form the following 3 equations (in the order of the first 3 sentences)

w = 2h (twice the price)

t = h - 4 ($4 less)

3w + 2h + 5t = 136 (total purchasing and cost)

We can solve all 3 equations for h first, by substituting the first two equations, into the third equations w and t

3(2h) + 2h + 5(h-4) = 136

Simplify

6h + 2h + 5h - 20 = 136

13h = 136 + 20

13h = 156

h = 156/13

h = $12

Using this information, we can solve for w and t

w = 2h

w = 2(12)

w = $24

And finally

t = h - 4

t = 12 - 4

t = $8

4 0
2 years ago
How many calories are needed to raise the temperature of 10 grams of water by 10 degrees Celsius?
max2010maxim [7]
(B) 10 cal im pretty sure can i please have brainiest answer
4 0
3 years ago
2sin^2x + 2cos^2x = 4a, then a = ?<br> A. 4<br> B. 3<br> C. 2<br> D. 1<br> E. 1/2
tensa zangetsu [6.8K]

Answer:

  E.  1/2

Step-by-step explanation:

Divide by 2, then make use of the Pythagorean identity for sine and cosine.

  sin(x)^2 +cos(x)^2 = 2a

  1 = 2a . . . . . . . sin²+cos²=1

  1/2 = a

6 0
3 years ago
Read 2 more answers
A) a clockwise rotation of 270 degrees about the origin
8090 [49]

Answer:

C. A reflection over the y-axis

Step-by-step explanation:

The correct answer would be choice "C" because first off, you can see that the shape hasn't grown/shrink. We can also see that it doesn't seemed to have rotated, otherwise it would be flipped in a certain direction. So, now we're left with a reflection over the y-axis/reflection over x-axis.

If the shape had reflected over the x-axis, it would be in the lower quadrants of the graph, since it would be flipped over a horizontal line. But instead, the shape has flipped to the left, making it a reflection over the y-axis.

7 0
3 years ago
Rosc has $500 in her savings account. She carnis simple interest at 5%
Firlakuza [10]

Answer:

50

Step-by-step explanation:

I assume you are asking how much she EARNS after 2 years.

500x.-5=25 interest per year

25 x 2 years = 50 interest for 2 years.

5 0
2 years ago
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