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2 years ago

Solve the equation below

Mathematics

1 answer:

Arlecino [84]2 years ago

4 0

Answer:

(-3,8)

Step-by-step explanation:

7x+5y=19

y=8

Because we know y=8 we cane use 8 instead of y in the first equation.

1) 7x+5(8)=19

2) 7x+40=19

3) 7x=-21

4) x=-3

Checking the work)

1) 7(-3)+5(8)=19

2) -21+40=19

3) 19=19

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Read 2 more answers

What is the midpoint of a segment with These endpoints (-12,-3) and (3,-8)

Savatey [412]

Answer:

$(\frac{-9}{2},\frac{11}{2})$

Step-by-step explanation:

you have to use the midpoint formula which is

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2 years ago

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3 0

2 years ago

A group of college students are going to a lake house for the weekend and plan on renting small cars and large cars to make the

maxonik [38]

The students rented 4 small cars and 8 large cars.

Step-by-step explanation:

Given,

Number of people in small car = 4

Number of people in large car = 7

Total people in both type of cars = 72

Let,

x represent the number of small cars rented.

y represent the number of large cars rented.

According to given statement;

4x+7y=72 Eqn 1

y = 2x Eqn 2

Putting value of y from Eqn 2 in Eqn 1

$4x+7(2x)=72\\4x+14x=72\\18x=72$

Dividing both sides by 18

$\frac{18x}{18}=\frac{72}{18}\\x=4$

Putting x=4 in Eqn 2

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The students rented 4 small cars and 8 large cars.

Keywords: linear equation, substitution method

Learn more about linear equations at:

#LearnwithBrainly

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