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Marrrta [24]
3 years ago
6

Out of 40 students In a class7 20% were absent how many students were present​

Mathematics
2 answers:
DerKrebs [107]3 years ago
7 0

Answer:

8 were absent

Step-by-step explanation:

20% of 40 is 8

Monica [59]3 years ago
5 0

Answer:

32 students were present

Step-by-step explanation:

total students =40

absent percent=20%

present percent= 100-20

=80%

total present student =80%of 40=32

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A perfume manufacturer uses 0.875 pounds of rose petals to make each bottle of perfume. How many pounds of rose petals would be
trapecia [35]
To solve this problem
Let X be pounds of rose petals needed.
ATQ
0.875 pounds of rose petals are in 1 bottle.
So, 0.875 / 1 = X / 86
( because we have to find how many petals {in pounds}are there  in 86 perfume bottles )
cross muliplying both side.
0.875 * 86 = X
75.25 = X
So, there are 75.25 pounds of petals in 86 perfume bottles.
8 0
3 years ago
Read 2 more answers
Evaluate 2 3/7 × 1 3/7 ,give your answer as a mixed number in its simplest form​
svp [43]

Answer:

i guess 3 23/49

Step-by-step explanation:

8 0
2 years ago
Find the range from 4 to –2.<br><br><br> 6<br><br> –2<br><br> 4<br><br> 2
alina1380 [7]

The range is from 4 to -2 is 6

7 0
3 years ago
Read 2 more answers
when the temperature is 68 F, the speed of sound in air is approximately 343 meters per second. Approximately how many kilometer
Digiron [165]

Hello!

Since we are given that the speed of sound in the air travels about 343 meters per second, we can multiply 343 meters per second by 5, and then we convert the meters to kilometers.

343 · 5 = 1715 meters per 5 seconds.

1000 meters are equal to 1 kilometer. So, we can divide 1715 by 1000 to convert meters to kilometers.

1715 / 1000 = 1.715

Therefore, the speed of sound in air is about 1.715 kilometers per 5 seconds.

6 0
3 years ago
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Betty's grade in science class is affected by the number of missing assignments. The table below shows the science grade percent
Angelina_Jolie [31]

Hi!

y=-5x+95

<em>Plug in </em>15 for x

y=-5(15)+95

<em>Multiply </em>-5 <em>and </em>15

y=-75+95

<em>Add </em>-75 <em>and </em>95

y =15

-------------------------------------------------------------------------------------------------------------

Betty's percentage is 15%.

The rate of change is the amount it changes for every missing assignment, therefore it would be -5.

5 0
2 years ago
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