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Scilla [17]
3 years ago
14

in chemistry class Andrew has earned scores of 64 69 and 73 on three tests he must maintain an average of 72

Mathematics
1 answer:
olganol [36]3 years ago
6 0
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

                             (288%  -  206%)  =   82%

on the fourth one.
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Answer:

17

Step-by-step explanation:

_4 to +3 = 7

3 to 10 =7

thus the sequence is 7

the answer is 10+7=17

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3 years ago
Two step equation<br><br> n - 5/2 =5
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Answer:

Step-by-step explanation:

two step equation

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-----------

check

7.5 - 5/2 = 5

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the answer is good

3 0
2 years ago
How do I simplify the n^-6*n^3 topic "Negative and Zero Exponents"
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If you need to finish without having a negative exponent in your answer, then remember a negative exponent means that factor is on the wrong side of the fraction.

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2 years ago
a washer and dryer cost a total of $936. The cost of the washer is two times the cost of the dryer. find the cost of each item
slamgirl [31]

Step-by-step explanation:

The washer costs $624 and the dryer costs 312.

624 is double 312 so that works out. Also if you add 624 and 312 you get 936.

7 0
2 years ago
Which expression is equivalent to
noname [10]

Answer:

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Step-by-step explanation:

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Put it all together and you get 15/25 m^2 n^3

Simplify 15/25 to 3/5

4 0
3 years ago
Read 2 more answers
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