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Alik [6]
3 years ago
11

If you have an 80 average so far in class after 3 tests what would you need to get on the fourth test to have an average of 83?​

Mathematics
1 answer:
Monica [59]3 years ago
8 0

Answer:

92

Step-by-step explanation:

83*4 = 332

And 80*3 = 240

332-240 = 92

So you would need 92

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Simply 15 to the 18 power divide by 15 to the 3 power
andrew11 [14]
The property of exponents says that when you divide two exponents with the same base, you can keep the base and subtract the exponents. So you can do 18-3, which is 15, so it would be 15 to the 15th power
6 0
3 years ago
Which inequality models this problem?
lana [24]

Answer:

C

Step-by-step explanation:

$6500 is a one time purchase so there is no variable attached.

$550 and $900 per week is reoccurring so there will be a variable attached.

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8 0
3 years ago
Identify BR rounded to the nearest tenth. HELP PLEASE!!
ahrayia [7]

Answer:

<h2>BR ≈ 49.0</h2>

Step-by-step explanation:

Use cosine:

cosine=\dfrac{adjacent}{hypotenuse}

We have

adjacent=42\\hypotenuse=BR\\\alpha=31^o

\cos31^o\approx0.8572

Substitute:

\dfrac{42}{BR}=0.8572

\dfrac{42}{BR}=\dfrac{8,572}{10,000}          <em>cross multiply</em>

8,572BR=420,000                <em>divide both sides by 8,572</em>

BR=\dfrac{420,000}{8,572}

BR\approx49.0

5 0
3 years ago
How to solve equations
Artist 52 [7]
-2m+15=45
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7 0
3 years ago
Read 2 more answers
What is the diameter or the radius?<br><br> Please help
nignag [31]

Answer:

Radius, Diameter and Circumference

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:)

7 0
3 years ago
Read 2 more answers
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