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3 years ago

9

What does y = x + 2 y = -3x

1 answer:

barxatty [35]3 years ago

7 0

The answer is (-1/2, -3x)

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Which expression shows 2 more than 1/5 times the sum of 7/12 and 3?

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The answer is D. 2+1/5×(7/12+3)

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3 years ago

Four more than three times a number is thirteen. What is this number?

Ostrovityanka [42]

Answer:

3

Step-by-step explanation:

13-4=9

9/3=3

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3 years ago

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The answer is a because<span>
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3 years ago

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Step-by-step explanation:

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3 years ago

you take a group of 20 people going to the movies. kids’ tickets cost $4 each, and adults tickets $6 each. your total cost is $9

brilliants [131]

The number of kids in your group is 12.

Step-by-step explanation:

Given,

Number of people = 20

Cost of each kid ticket = $4

Cost of each adult ticket = $6

Total spent = $96

Let,

x be the number of kids ticket

y be the number of adult ticket

According to given statement;

x+y=20 Eqn 1

4x+6y=96 Eqn 2

Multiplying Eqn 1 by 4

$4(x+y=20)\\4x+4y=80\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(4x+6y)-(4x+4y)=96-80\\4x+6y-4x-4y=16\\2y=16$

Dividing both sides by 2

$\frac{2y}{2}=\frac{16}{2}\\y=8$

Putting y=8 in Eqn 1

$x+8=20\\x=20-8\\x=12$

The number of kids in your group is 12.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

5 0

3 years ago