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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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A copy machine makes 28 copies per minute. How many copies does it make in 3 minutes and 45 seconds?
lina2011 [118]
<u>Convert minutes and seconds to minutes:</u>
\text{3 mins 45 seconds} \longrightarrow 3 \dfrac{3}{4} \text{mins}


<u>FInd 3 3/4 mins:</u>
\text{1 min} \longrightarrow 28 \text{ copies}

3  \dfrac{3}{4} \text{ min} \longrightarrow 28 \times 3\dfrac{3}{4} \text{ copies}

3  \dfrac{3}{4} \text{ min} \longrightarrow 28 \times \dfrac{15}{4} \text{ copies}

3  \dfrac{3}{4} \text{ min} \longrightarrow 105 \text{ copies}

Answer: It can make 105 copies.

4 0
3 years ago
Express 25km/h into m/s?
Helen [10]

Answer:

3600(seconds) can also be expressed as 1(kilometer/hour) = 5/18 (meters/second), which is its simplified form. To convert km/h to m/s, directly multiply the given value of speed by the fraction 5/18.

Step-by-step explanation:

I think that explanation is obvious

7 0
2 years ago
Find the missing side.<br> Can someone help???
I am Lyosha [343]
20/tan 70 = 7.279404685
5 0
2 years ago
Read 2 more answers
All log graphs contain the points (1,0), (a,1), and (1/a,-1).<br><br> True .<br> False.
Bumek [7]
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Explanation:
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Hence the correct option is True.
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