2 years ago

URGENT!!! plz help will give brainlist question is in photo

Mathematics

1 answer:

grandymaker [24]2 years ago

3 0

Answer:

x = 3

Explanation:

15x + 5 + 22x + 4 + 60 = 180

37x + 69 = 180

37x = 111

x = 3

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sleet_krkn [62]

Answer:

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2 years ago

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How many ways can an employer send 3 employees to a job fair if she has 11 employees?

algol13

We have to find the number of ways an employer send 3 employees to a job fair if she has 11 employees.

This is the problem from combination.

The formula for combination is given by

$^nC_r= \frac{n!}{r!(n-r)!}$

Here, n= 11, r= 3

Therefore, total number of ways is given by

$^{11}C_3= \frac{11!}{3!(11-3)!}\\
\\
=\frac{11!}{3!8!}\\
\\
=\frac{8!\times 9 \times 10 \times 11}{3!8!}\\
\\
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\\
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2 years ago

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A pencil costs $0.25 more than an eraser. If the cost of eight pencils is $6.80, what is the cost of one eraser?

Sever21 [200]

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1 year ago

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Solve the system of equations by substitution <br> y= 3x - 10<br> 3x + 2y = 16

Natalija [7]

Y= 3x - 10
<span>3x + 2y = 16

3x+2(3x-10)=16
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