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3 years ago

7

I think of a number, multiply it by three, and add four. My answer is 22. Using this statement, form and equation using the lett

er x as the unknown number

1 answer:

lesantik [10]3 years ago

4 0

Let x represent the number you thought of
3x+4=22

Solve:
3x+4=22
3x=18
x=6

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If you buy a stock for $80 per share and sell it for $100 per share, what is the percent increase?

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I think I might be wrong but try 25% (but like I said probably wrong)

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3 years ago

Mr. Howard is a student teacher at the local junior high. His first‐period class of 40 students averaged 96% on a recent test. H

kodGreya [7K]

Answer:

The combined average is 94%

Step-by-step explanation:

for first period, number of students =40

average =96%

for second period, no of students =20

average =90%

but $average = \frac{sum of scores}{no of students}$

let $S_1$ =sum of students for the first period

$S_2$ =sum of students for the second period

for first period;

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for second period,

$\frac{S_{2} }{20} =90%$

$S_{1}= 90*20=1800$

therefore the combined average = $\frac{S_1+S_2}{40+20}$

that is $\frac{3840+1800}{40+20}$ $= 94%$

so combined average is 94%

3 0

3 years ago

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Explain how please I’m not sure

grin007 [14]

Answer:

164 degrees

Step-by-step explanation:

The measure of the individual internal angle in a polygon is;

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3 years ago

Helpppppp meeeeeeeer

elixir [45]

1/5 is your answer, sorry if it is wrong but I think it os right :)

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3 years ago

How to turn 25/30 in simplest form

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The answer is 5/6 I think

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3 years ago

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