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sukhopar [10]
3 years ago
7

Linear equations word problems

Mathematics
1 answer:
damaskus [11]3 years ago
5 0
Drinks, x
popcorn, y
 9x + 4y = 40.50
 3x + 5y = 38.25

Multiply the 2nd row by 3
9x+4y=40.50
9x+15y=114.75
Subtract the 2nd row from the 1st row
−11y=−74.25
Solve for y

Substitute y
9x+4(6.75)=40.50
9x+27=40.50
Subtract 27 from both sides
9x=40.50−27
9x=13.5
Divide both sides by 9

I'll let you do some of the work ;)

Hope this helps
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Which are correct representations of the inequality –3(2x – 5) < 5(2 – x)? Select two options. x < 5 –6x – 5 < 10 – x –
maksim [4K]

The correct representation of the inequality –3(2x – 5) < 5(2 – x) is -6x + 15 < 10 - 5x. It an open circle is at 5 and a bold line starts at 5 and is pointing to the right.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

Given the inequality:

–3(2x – 5) < 5(2 – x)

= -6x + 15 < 10 - 5x

= -x < -5

= x > 5

The correct representation of the inequality –3(2x – 5) < 5(2 – x) is -6x + 15 < 10 - 5x. It an open circle is at 5 and a bold line starts at 5 and is pointing to the right.

Find out more on equation at: brainly.com/question/2972832

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6 0
2 years ago
Use the distributive property to rewrite each expression. 3(-2x + 4)
Mila [183]

Answer:

-6x + 7

Step-by-step explanation:

you need to multiply 3 by each number individually.

(3) -2x + (3) 4

-6x + 7

hope that helps!

3 0
3 years ago
I need help with 1 &amp; 3.. thanks
AlekseyPX

Answer:

y/x = (a + b) / (m + n)

Step-by-step explanation:

-(xb − ym) = -yn + xa

Distribute:

-xb + ym = -yn + xa

Combine like terms:

ym + yn = xa + xb

Factor:

y (m + n) = x (a + b)

Rearrange:

y/x = (a + b) / (m + n)

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Answer:

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Step-by-step explanation:

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