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iogann1982 [59]
3 years ago
11

The art class lasts 90 minutes. The teacher explains the project for 25 minutes and allows 15 minutes for questions and discussi

on. He talks to each student about their project for 5 minutes and then all of the class time is used up. Write and evaluate the expression that shows how many students are in the class.
Mathematics
1 answer:
bixtya [17]3 years ago
5 0

Answer:

There are 10 kids

Step-by-step explanation:

Add 25 and 15 you will get 40. Then, you will have 50 minutes left so divide it by 5 because they are using 5 minutes per person. So the answer is 10 kids.

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In ΔJKL, the measure of ∠L=90°, KL = 22 feet, and JK = 54 feet. Find the measure of ∠J to the nearest degree.
nydimaria [60]

We have been given that in ΔJKL, the measure of ∠L=90°, KL = 22 feet, and JK = 54 feet. We are asked to find the measure of angle J to nearest degree.

First of all, we will draw a triangle as shown in the attachment.

We can see from our attachment that side KL is opposite side to angle J and side JK is hypotenuse of right triangle.

We know that sine relates opposite side of right triangle to hypotenuse.

\text{sin}=\frac{\text{Opposite}}{\text{Hypotenuse}}

\text{sin}(\angle J)=\frac{22}{54}

Using inverse sine or arcsin, we will get:

\angle J=\text{sin}^{-1}(\frac{22}{54})

\angle J=24.042075905756^{\circ}

Upon rounding to nearest degree, we will get:

\angle J\approx 24^{\circ}

Therefore, the measure of angle J is approximately 24 degrees.

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Answer:

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Step-by-step explanation:

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