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Phoenix [80]
3 years ago
6

Solve using the substitution method. Show your work! Full credit will only be given if all steps are shown.

Mathematics
1 answer:
AnnyKZ [126]3 years ago
8 0

One of the ways to solve a system of equation is by using the substitution method

The values of x and y are -9 and 5

<h3>How to use the substitution method </h3>

The equations are given as:

2x + 6y = 12

x + y = -4

Make x the subject in the second equation

x = -4 - y

Substitute x = -4 - y in the first equation

2(-4 - y) + 6y = 12

Expand

-8 - 2y + 6y = 12

Add 8 to both sides

- 2y + 6y = 20

So, we have:

4y =20

Divide through by 4

y = 5

Recall that:

x = -4 - y

So, we have:

x = -4 - 5

x = -9

Hence, the values of x and y are -9 and 5

Read more about the substitution method at:

brainly.com/question/13476446

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Please can someone help me answer this?
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452.39 is the answer

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3 years ago
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Melody had 45. She spent 32.75 on a blouse . Then her mother gave her 15.50. How much money does Melody have now ?
koban [17]

Answer:

Melody have now $27.75

Step-by-step explanation:

We will proceed to solve the problem in parts so that it can be better understand

so

1) Originally Melody had $45

2) She spent $32.75 on a blouse

so

In this moment Melody has --------> $45-$32.75=$12.25

3) Her mother gave her $15.50

so

In this moment Melody has --------> $12.25+$15.50=$27.75

therefore

Melody have now $27.75

5 0
3 years ago
HELP! Evaluate.<br><br> 45 + 22 ÷ 11 • {[(60 – 15) • 60] + 25}
siniylev [52]

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=2725

45 + 22 ÷ 11. 2725

45 + 2 . 2725

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4 0
3 years ago
A number cube is tossed and a spinner is spun. What is the probability of getting a 3 or 4 on the number cube and not getting 8
Rufina [12.5K]

Answer:

7/24

Step-by-step explanation:

Given in the question,

a number cube is tossed and a spinner is spun.

Cube have 6 in numbers

1 2 3 4 5 6

probability of having 3 or 4 = 2/6

                                             = 1/3

                           

Spinners are commonly made with 6, 8, 10 and 12 flat surfaces.

If a spinner has 8 flats then you have a 7/8 chance of not getting an 8.

Probability of getting a 3 or 4 on the number cube and not getting 8

"and" mean multiplication

7/8 x 1/3

7/24

5 0
3 years ago
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