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3 years ago

5

A student scored 68, 79, and 98 on three algebra tests. what must he score on the fourth test in order to have an average grade

of at least 85?

1 answer:

slega [8]3 years ago

7 0

Score on fourth test should be 95

68 + 79 + 98 + 95 = 340

340 divide by 4 (as there are 4 tests) = 85

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3 years ago

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2 years ago

Unsure on if I have the right answer worked out someone please say what you've got and how you've done it please

PilotLPTM [1.2K]

The answer is at 7:12 a.m, did you get that?

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3 years ago

Pleaseeee helpppp!!!!

kondor19780726 [428]

The right answer is Option A: $x=\frac{rs-t}{2}$

Step-by-step explanation:

Given expression is;

$s=\frac{2x+t}{r}$

We will solve this expression for x, therefore,

Multiplying both sides by r

$r*s=\frac{2x+t}{r}*r\\rs=2x+t$

Subtracting t from both sides

$rs-t=2x+t-t\\rs-t=2x\\2x=rs-t$

Dividing both sides by 2

$\frac{2x}{2}=\frac{rs-t}{2}\\x=\frac{rs-t}{2}$

The right answer is Option A: $x=\frac{rs-t}{2}$

Keywords: subtraction, division

Learn more about subtraction at:

#LearnwithBrainly

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3 years ago

How to solve 6/12=2/c

Vlad1618 [11]

All you have to do here is some simplifying.

6/12 = what
6 divided by 12 = 1/2

1/2 = 2/4

There! We have our missing value

6/12 = 2/4

Answer: c = 4

4 0

3 years ago

Read 2 more answers