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3 years ago

PLEASE SHOW ALL WORK I WILL GIVE BRAINLY THIS IS DUE IN 5 MINS PLEASE HELP ME

Mathematics

1 answer:

goldfiish [28.3K]3 years ago

3 0

35/100= x/80 x=28 8/100=x/5 x=0.4 50/100=x/125 x=62.5 12/100=48/x x=400

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Will give brainliest and 5 stars

BaLLatris [955]

First, find what percentage of students had 3 or more by adding up your known percents:

45% + 23 % + 21% + x% = 100%
x = 11%

Since you're given that 96 students had 2 or more, you add up the percentages of 2 and 3 or more:

11 + 21 = 32%

Now set up a proportion that relates it to the whole:

$\frac{96 students}{32 percent} = \frac{x students}{100 percent}$

This will allow you to find the total number of students at the school.

Cross multiplying and solving for x results in 300 total students.

Question 1:
45% had one or more absences. 45% of 300 students is 135 students.

Question 2:
As we found before, 11% of students had three or more. 11% of 300 is 33 students.

5 0

4 years ago

Nathan bikes every 2 days and swims every 5 days. He started biking on October 2nd and started biking on October 5th. On what da

mestny [16]

Answer:

October 10, hope this helps.

Step-by-step explanation:

If Nathan started biking on October 2nd, and he started swimming on October 5th, then since October 10 is the closest day to them that he will be swimming and biking, but also because their both even numbers so he will be biking and swimming on October 10th.

6 0

3 years ago

A circle with area 81ㅠ has a sector with a central angle of 120°.

Mrac [35]

Answer:

Step-by-step explanation:

We have the area of a circle

$A_O=81\pi$

The sector with a central angle of

$120^o$

Calculate, what part of 360° is an angle 120°:

$\dfrac{120^o}{360^o}=\dfrac{1}{3}$

The same part of an area of a circle is an area of a segment.

Therefore:

$A_S=\dfrac{1}{3}\cdot81\pi=27\pi$

Use π ≈ 3.14

$A_S\approx(27)(3.14)=84.78$

4 0

4 years ago

Which of the following is an example of the associative property of multiplication?

Zarrin [17]

The second one is the correct answer!

7 0

3 years ago

Read 2 more answers

you are a school photographer taking individual and class pictures for 2 classes of 21 students each on average each individual

uysha [10]

Answer: Approximately 146 minutes (or if you need the simplified version the answer is 2 hours and 26 minutes). Step-by-step explanation: Step 1. Two classes of 21 students. To calculate that you would multiply 21 by 2. 21*2=42 Step 2. So now we know you need 42 individual pictures. If they each take 3 minutes to take you need to multiply 42 by 3. 42*3=126. So now you know it’ll take 126 minutes to take all the individual pictures. Step 3. Now, there are 2 classes of people and it takes 10 minutes to take each class picture. So do calculate that you need to multiply 10 by 2. 10*2=20. So it’ll take 20 minutes to take both class pictures. Step 4. Now we know it’ll take 126 minutes to take all the individual photos and 20 minutes to take the class photos. Now to calculate the total amount of time it’ll take to take all the photos you need to add 20 to 126. 126+20=146. So, it’ll take 146 minutes to take all the photos. Step 5. (You can skip this step if no simplification is needed in your problem) So, we all know there is 60 minutes in an hour so we’ll divide 146 by 60. 146/60=2.43. So, now we know it’ll take 2.43 hours to take all the photos. 2.43 hours is 2 hours and 26 minutes. I hope this helps!

4 0

3 years ago