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alexandr402 [8]
3 years ago
6

3. Marcus had an average score of 90% on two biology tests about protists. If his first test score was 96%, which score did he r

eceive on the second test? A.45% B.84% C.90% D.102%​
Mathematics
1 answer:
Maurinko [17]3 years ago
7 0

Answer:

B: 84%

Step-by-step explanation:

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One pipe fills a storage pool in 20 hours, another pipe fills the same pool in 15 hours.
erica [24]
X=time  of the third person it would take to fill the pool 
We can suggest this equation:
6[(1/20) + (1/15) +(1/x)]=1
6[(3x+4x+60)/60x]=1
(7x+60)/10x=1
7x+60=10x
7x-10x=-60
-3x=-60
x=-60/-3
x=20

Answer: the third person alone would fill the pool in 20 hours .
6 0
3 years ago
What is the ratio for the volumes of two similar cylinders, given that the ratio of their heights and radii is 2:3?
ankoles [38]

Answer:

C IS YOUR ANSER.

Step-by-step explanation:

4 0
3 years ago
Can some one help I forgot how to do 0.6 divided by 12.9. Plzzzzz anyone hellppppppp
Katyanochek1 [597]

The answer to your question is 0.046511627906

Explanation:

Simple, use a calculator to answer your question.

3 0
2 years ago
ILL MARK BRAINLIST
Mkey [24]

Answer:

vertical angles

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Helphelphelphelphelp​
VashaNatasha [74]
<h3>5:16</h3>

The ratio is supposed to be pennies to total amount of coins. The total amount of coins--including pennies--is 16. This can be proven by this equation:

5 + 6 + 5 = 16

Now you put the ratio together by taking the amount of pennies (5) and total amount of coins (16). Your ratio should look like this:

5:16

Hope I helped you out! ❤❤

4 0
3 years ago
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