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inessss [21]
3 years ago
7

Work out the area of a semicircle with radius 3cm. give your answer in terms of 3.142

Mathematics
2 answers:
telo118 [61]3 years ago
4 0

1.5 • 3.142= 4.713 should be the answer

Lilit [14]3 years ago
4 0

Answer:   4.5π  ≈  14.14 cm²

<u>Step-by-step explanation:</u>

Area_{\ circle}=\pi \cdot r^2\\\\Area_{\ semicircle}=Area_{\ circle}\div 2\\\\\\A=\dfrac{\pi \cdot 3^2}{2}\\\\\\.\quad =\dfrac{9}{2}\pi\\\\\\.\quad =4.5\pi\\\\\\.\quad =14.14

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3 years ago
In a triangle, angle B is half of angle A. Angle C is 5 more tham double angle A. What are the measurements of each angle?
Furkat [3]
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3 years ago
Which statement about y = x2 + 7x - 30 is true?
Lady_Fox [76]

Answer:

D. The zeros are 3 and -10, because y = (x - 3)(x + 10).

Step-by-step explanation:

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4 0
3 years ago
Please help me with this thanks
Ronch [10]

If x = 1, then 3*1 = 3 which when modded with 5, we get 3 as a remainder. In other words, 3/5 = 0 remainder 3. We don't use the quotient at all when it comes to modular arithmetic. All we care about is the remainder.

If x = 2, then 3*2 = 6 which leads to remainder 1 when we divide by 5. Therefore, 3x = 1 (mod 5) when x = 2.

If x = 3, then 3*3 = 9 = 4 (mod 5) because 9/5 = 1 remainder 4.

So 3x = 4 (mod 5) when x = 3.

<h3>The final answer is C) 3</h3>

We don't need to check D since x = 3 is a solution and it's smaller than x = 4.

If you wanted to check x = 4, then 3*4 = 12 = 2 (mod 5) because 12/5 yields a remainder of 2.

7 0
3 years ago
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Scilla [17]

assuming the question is stating he picked 1 and 3/4 bushels from his kitchen garden then the answer is 16 whole  bushels or 16.8
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