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andriy [413]
2 years ago
9

There are 32 students in a class. Nine of those students are girls. What percent are boys? (Round your answer to the nearest WHO

LE person.)
Mathematics
2 answers:
Nataly [62]2 years ago
7 0
The answers 23...subtract 32-9
storchak [24]2 years ago
4 0
32 - 9 = 23

23/32 = 0.718

0.718 x 100 = ~72%
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A parabola has its vertex at (-6, 5) and focus at (-6.25, 5). Which of the following is an equation for this parabola?
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Answer:

Step-by-step explanation:

vertex and focus are horizontally aligned, so parabola is horizontal.

focal length p = distance between focus and vertex = 0.25

focus lies to the left of vertex, so the parabola opens to the left.

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2 years ago
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Step-by-step explanation:

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Trig help please!!! This is due tomorrow. If you don’t mind could you please explain how you do it
vivado [14]

Answer:

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Step-by-step explanation:

Let's solve for both of the acute angles for the purpose of checking our work at the end with angle A being the top angle and angle B being the one on the base of the triangle (that's not the 90 degrees one). Determining whether to use sin/cos/tan comes from SOH-CAH-TOA.

A = cos^-1 (2√6/2√15)

However, you need to move the radical out of the denominator by multiplying √15 to the numerator and denominator. You should come up with (2√90)/30. So,

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B = sin^-1 (2√90/30) = 39.231 degrees.

Now, we can check the work by adding the 2 angles to 90 and, if it comes to 180, it's right.

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If you have any questions on where I got a formula or any step, feel free to ask in the comments!

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