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s2008m [1.1K]
3 years ago
14

Simplify the expression

Mathematics
1 answer:
VLD [36.1K]3 years ago
8 0

Answer:

option A -3r^6 s^14

Step-by-step explanation:

(-3r^4 s^7/r)^2

(-3r^3 s^7)^2

-3r^6 s^14

-TheUnknownScientist

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Answer:

Step-by-step explanation:

Problem One

Perimeter is in meters not square meters. The equation is

2*(6.8+x) + 2*12.5= 47                Remove the brackets. Combine like terms  

13.6 + 2x + 25 = 47

38.6 + 2x = 47                            Subtract 38.5 from both sides

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Answer D

Problem 2

This problem is asking that you calculate the perimeter of a swimming pool.

The two semicircles on the ends make a whole circle.

The diameter of the semicircles is obtained from the difference of the two given lengths.

The rectangle has a length of 12. The length of the rectangle and the 2 semicircles is 16. The difference is 4. You could divide this by 2 to get the radius. I would just leave it as the diameter.

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This is the circle inside the square.

The radius of the circle = 9

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The area of the square = 18^2 = 324

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b1 = 5

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Answer D

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