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blondinia [14]
3 years ago
8

your test grades are 85,74, and 91. What is the lowest grade you can get on the next test and have an average of at least 80

Mathematics
2 answers:
wariber [46]3 years ago
8 0

Answer:

Lowest grade is 70.

Step-by-step explanation:

To have an average of 80 the total score is 4 * 80 = 320.

So the score for the next test must be  320  - (85 + 74 + 91)

= 70.

max2010maxim [7]3 years ago
5 0

Answer:

70

Step-by-step explanation:

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the answer is:

<em>m is 2/3</em>

The whole work I did:

m + 4 ÷ 3 = 2

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Please help asap! Due tonight!
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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To use Herons formula for the area

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Area = sqrt( S (S-a) (S-b)(S-c))

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