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Ainat [17]
3 years ago
10

Please help I’m really confused

Mathematics
1 answer:
IgorC [24]3 years ago
5 0

Answer:

Your answer will be 0.80

Step-by-step explanation:

P(A or B) = P(A) + P(B) - P(A and B)

P(A or B) = 0.60 + 0.30 - 0.10

P(A or B) = 0.80

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 <span>4x^2 - 36 = 0 ( Original equation ) 

4x^2 = 36 ( Add 36 to both sides ) 

x^2 = 9 ( Divide by 4 on both sides ) 

x = 3 , -3 ( Take the square root of 9 ) 

Solution set: { +3 , -3 } answer is x = +3 , x = -3</span>
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What is the measure of an interior angle of a regular 360-gon
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Answer:

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Step-by-step explanation:

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Lauren has an above-ground pool. To keep the pool's skimmer working well, the water level must be 4 inches from the top of the p
KIM [24]

Answer:

<em>1885.5 m^3 of water</em>

<em></em>

Step-by-step explanation:

I'll assume this is the complete question

<em>Lauren has an above-ground pool. To keep the pool's skimmer working well, the water level must be 4 inches from the top of the pool. When the pool is filled to this recommended level, approximately how many cubic feet of water will it contain? Use π = 3.14 </em>

<u><em>The pool forms</em></u><em> a cylinder with a radius of 12 feet and a height of 4.5 feet.</em>

<em></em>

height of pool = 4.5 ft

radius of pool12^{2} = 12 ft

height of water is 4 inches below pool top

<em>12 inches make 1 ft</em>

4 inches = 4/12 ft = 0.33 ft

Therefore, height of water = 4.5 - 0.33 = 4.17 ft

<em>volume of the water in this section of the cylinder will be equal to the volume of the cylinder formed</em>

volume of cylinder formed by the water = volume of water = πr^{2}h

volume = 3.14  x 12^{2} x 4.17 = <em>1885.5 m^3 of water</em>

3 0
3 years ago
Jackie bicycles 9 kilometers west to get from her house to school. After school, she bicycles 12 kilometers north to her friend
klemol [59]
Answer:

21 kilometers!

Explanation: You add the two distances she rode her bicycle and add them together. 9+12 = 21kilometers!
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