2 years ago

{5x=7y {x+7y=21 pls help i dnt understand this...

Mathematics

1 answer:

Alinara [238K]2 years ago

4 0

Answer:

x = 7/2 y = 5/2

Step-by-step explanation:

You can either use the elimiation or adding and subtracting method to get the variables for both x & y.

Once you solved for one variable, plug in the variable you just solved back into the original equation to find the other variable.

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8_murik_8 [283]

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2 years ago

A math textbook is 1 1/4 in. thick. how much shelf space is needed for 30 copies of the book?

inysia [295]

Hello!

You have to multiply 1 1/4 by 30 because each math book is 1 1/4 in. thick, and 30 books is 1 1/4 by 30. First change 30 and 1 1/4 to an improper fraction.

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3 years ago

Enter the values for the highlighted variables to

LekaFEV [45]

Answer:

a = - 1

b = - 9

c = 9

d = 3

e = 3

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Step-by-step explanation:

For a;

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For b;

-1 * 9 = - 9

For x ;

3x + (-9) = 3x - 9

3x - 9 = d(x - e)

Factorizing :

3(x - 3)

d = 3 ; e = 3

2x - 6 = f(x - 3)

Factorize :

2x - 6 = 2(x - 3)

3(x - 3) / 2(x - 3)

g = 3/2

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2 years ago

Find the slope of the line passing through (3,5) and (-4,-10)

Rudiy27

Answer:

$\frac{15}{7}$

Step-by-step explanation:

Please see attached picture for full solution.

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2 years ago

The inequality 7h+45≥143 represents the minimum number of hours, h, it will take a chef to make at least 143 croissants. The tab

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Answer:

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Step-by-step explanation:

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