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liberstina [14]
3 years ago
10

Match the expressions 21/25 60% 13/20 84% 2/5 75% 65% 3/4 3/5

Mathematics
1 answer:
katrin [286]3 years ago
8 0

Answer:

21/25 ---> 84%

13/20 ---> 65%

3/5 ---> 60%

3/4 --->75%

2/5 ---> 40%

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in chemistry class Andrew has earned scores of 64 69 and 73 on three tests he must maintain an average of 72
olganol [36]
You haven't told me what the question is.  But I put the mouse
to my forehead, closed my eyes, took a deep breath, and I could
see it shimmering in my mind's eye.  It was quite fuzzy, but I think
the question is

                   "What score does Andrew need on the next test
                     in order to raise his average to 72% ?"

The whole experience drew an incredible amount of energy
out of me, and the mouse is a total wreck.  So we'll just go ahead
and answer that one.  I hope it's the correct question.

The average score on 4 tests is

                                     (1/4) (the sum of all the scores) .

In order for Andrew to have a 72% average on 4 tests,
the sum of the 4 scores must be

                                         (4) x (72%)  =  288% .

Out of that total that he needs, he already has 

                            (64% + 69% + 73%) = 206%

on the first three tests.

So in order to average 72% for all 4 tests,
he'll need to score

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on the fourth one.
6 0
3 years ago
the number n is a 2-digit number. when n i divided by 10, the remainder is 9, and when n is divided by 9, the remainder is 8. wh
larisa [96]
Think of numbers that when they are divided by 10, the remainder is 9.
So numbers like: 19, 29, 39, 49, 59, 69, 79, 89, and 99.

Now numbers that when they are divided by 9, the remainder is 8.
So numbers like: 17, 26, 35, 44, 53, 62, 71, 80, 89, and 98.

Now the number that is alike from the two sets of numbers is n.
n=89

Double check your work.
Divide 89 by 10. Remainder of 9
Divide 89 by 9. Remainder of 8.

Hope this helps :)

6 0
3 years ago
What is 5 times 5 <br> and also what is 5 plus 5 bc im rly silly
timofeeve [1]

Answer:

5 x 5 = 25 and 5 + 5 = 10

Step-by-step explanation:

You multiply 5 Five times.

So you get 5,10,15,20,25!

The answer is 25

You add 5 two times.

So you get 5 plus 5!

5,6,7,8,9,10!

The answer is 10

Hope this helped!

~Oreo!!

5 0
3 years ago
Solve a/a-1 - a+5/a =0
sweet [91]
The answer should be 5/a-a=0
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3 years ago
Four people are carpeting a house. Heidi carpets 1/6 of the house, Lisa carpets 16% of the house, Martina carpets 0.2 of the hou
Lina20 [59]
Heidi : 1/6 = 0.166
Lisa : 16% = 0.160
Martina : 0.200
Jaydie : 0.180

least to greatest : Lisa, Heidi, Jaydie, Martina
6 0
3 years ago
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