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3 years ago

Solve each word problem using a system of equations. Use substitution or elimination.

Mathematics

1 answer:

nasty-shy [4]3 years ago

4 0

Answer:

Step-by-step explanation:

x + 3y = 24.....multiply by -1

5x + 3y = 36

------------------

-x - 3y = -24 (result of multiplying by -1)

5x + 3y = 36

------------------add

4x = 12

x = 12/4

x = 3 <=======

x + 3y = 24

3 + 3y = 24

3y = 24 - 3

3y = 21

y = 21/3

y = 7 <========

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3 years ago

What is the distance between coordinates (-6.25,5) and (-3.75,2)

Oksi-84 [34.3K]

Answer:

$\sqrt{15.25}$

Step-by-step explanation:

To find the distance, we can use the distance formula:

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$d=\sqrt{(-6.25-x_1)^2+(5-y_1)^2}\\d=\sqrt{(-6.25-(-3.75))^2+(5-2)^2}\\d=\sqrt{(-6.25+3.75)^2+(5-2)^2}\\d=\sqrt{(-2.5)^2+(3)^2}\\d=\sqrt{6.25+9}\\d=\sqrt{15.25}$

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3 years ago

Write the equation in slope intercept form 2x+y=6

Rina8888 [55]

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3 years ago

What values of c and d make the equation true?

saul85 [17]

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Third option.

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You can notice that the exponent of "y" on the left side is 5, then the exponent of "x" on the left side must be 5 too. Therefore "d" is:

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3 years ago

By hiring 45 new employees, a department store increased its help by 18% during the Christmas season. How many employees did the

bagirrra123 [75]

Hi!

We can set up a proportion then cross multiply to solve this.

$\frac{45}{x} \frac{18}{100}$

45 x 100 = 4500
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The answer is 250

Hope this helps! :)

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3 years ago