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2 years ago

Solve the system of equations using substitution. −8−y=−6 2x−3y=4

Mathematics

2 answers:

vodomira [7]2 years ago

4 0

Answer:

y= -2

Step-by-step explanation:

-y= -6+8 calculate which gives -y=2 then you change the signs and your answer is y= -2

OleMash [197]2 years ago

3 0

Answer:

5x = y + 6

x = 1/5y + 6/5

Step-by-step explanation:

2x - 3y = 4

2(1/5y + 6/5) - 3y = 4

2/5y + 12/5 - 3y = 4....multiply everything by 5 to get rid of fractions

2y + 12 - 15y = 20

2y - 15y = 20 - 12

-13y = 8

y = - 8/13

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I need help with this please

kodGreya [7K]

1/5(2x - 10) + 4x = -3(1/5x + 4)
0.4x - 2 + 4x = -0.6x - 12
4.4x - 2 = -0.6x - 12
5x - 2 = -12
5x = -10
x = -2

6 0

2 years ago

Read 2 more answers

Solve the two step equations

disa [49]

Hello!

1) -3x - 4 = 23

-3x = 23 + 4

-3x = 27

x = 27 : (-3)

x = -9

2) x/2 - 12 = -4

x - 24 = -8

x = -8 + 24

x = 16

3) 6a + (-1) = 10

6a - 1 = 10

6a = 10 + 1

6a = 11

a = 11 : 6

a = 11/6

4) -(x + 2) = 12

x + 2 = -12

x = -12 - 2

x = -14

5) 7a + 12 = 10

7a = 10 - 12

7a = -2

a = -2 : 7

a = -2/7

6) -4(a + 2) = 12

a + 2 = -3

a = -3 - 2

a = -5

Good luck! :)

7 0

2 years ago

Terrance runs 5 miles each week. His brother runs 5/6 the distance Terrance runs in one week. How far does Terrance’s brother ru

Firlakuza [10]

5\6 × 7 equals C 5 1\6 miles

6 0

3 years ago

The art teacher has 7 bottles of glue that are each 2/5 full. He combines them so he will have fewer bottles. How many bottles o

Katen [24]

Teacher will have 3 bottles of glue after he combines

Solution:

Given that,

The art teacher has 7 bottles of glue that are each 2/5 full

He combines them so he will have fewer bottles

To find: bottles of glue does he have after he combines them

From given,

Total bottles = 7

Each is 2/5 full

Therefore, multiply 7 with 2/5 to get total bottles of glues he will have after combining

$Number\ of\ bottles\ of\ glues = 7 \times \frac{2}{5}\\\\Number\ of\ bottles\ of\ glues = \frac{14}{5} = 2.8 \approx 3$

Thus teacher will have 3 bottles of glue after he combines

7 0

3 years ago

an oil change at city auto is regularly $30. Mr. Allen had a coupon for 15% off. He wants to know the sale price of the service.

pshichka [43]

Answer:

he would pay $4.50 for it.

Step-by-step explanation:

all you do is take the $30 and times that by 15% and you get $4.50.

4 0

3 years ago