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TiliK225 [7]
3 years ago
14

Please answer this correctly

Mathematics
1 answer:
slavikrds [6]3 years ago
7 0

Answer:

19.63

Step-by-step explanation:

If the perimeter is 17.85, then it is equal to 2r+(2*3.14*r)/4. Solving this gives us r=5. Therefore, the quarter circle's area is (3.14*5^2)/4 = 19.625. Rounding this gives us 19.63

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The area of a rectangular classroom is given by the trinomial a - 4a - 21. The length of the rectangle is a+3. What is the expre
djverab [1.8K]
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Does this table represent a function or not? Why or why not?
kirill115 [55]

Answer:

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Step-by-step explanation:

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2 years ago
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7 0
3 years ago
A student is trying to solve the system of two equations given below: Equation P: a + b = 6 Equation Q: 4a + 2b = 19 Which of th
Marrrta [24]

Answer:

-4(a + b = 6)

Step-by-step explanation:

Given

a + b = 6

4a + 2b = 19

Required

Eliminate a

Multiply the first equation by -4

-4(a + b = 6)

Add to the second equation

-4(a + b = 6) + (4a + 2b = 19)

Solve brackets

(-4a -4b = -24) + (4a + 2b = 19)

Open bracket

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At this point, a has been eliminated;

From the list of given options, the option that answers the question is -4(a + b = 6)

8 0
3 years ago
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