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lisov135 [29]
2 years ago
5

a student earned a grade of 80% on a math test that had 25 problems. how many problems on this test did the student answer corre

ctly

Mathematics
2 answers:
Mamont248 [21]2 years ago
6 0
80% of 25
percent means parts out of 100
'of' means multiply
80% of 25 means
80/100 times 25=40/50 times 25=20/25 times 25=20

answer is 20 problems
algol132 years ago
6 0
25×0.8= 20. just to back the other answer up
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7.5. 10.5*5 and divide that by 7
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(0, -2) is a solution of the equation 2x - 3y = 6. true or false
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It is a solution of the ordered pair.

Step-by-step explanation:

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(219,379.01 - x) / x = .3321
Ivahew [28]

Answer:x = 164686.592598

Step-by-step explanation:

219379.01−x/x = 0.3321

−x+219379.01/x = 0.3321

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−x+219379.01≈0.3321x

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Step-by-step explanation:

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t = 1.94 hours

Therefore, the half life of the drug is 1.94 hours

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