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meriva
2 years ago
9

Solve by elimination. 2x + 8y = 60 5x + 4y = –10

Mathematics
1 answer:
puteri [66]2 years ago
8 0

Answer:

2x + 8y = 60= 30

5x + 4y = –10= -2

Step-by-step explanation:

Simplifying

2x + -8y = 60

Solving

2x + -8y = 60

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '8y' to each side of the equation.

2x + -8y + 8y = 60 + 8y

Combine like terms: -8y + 8y = 0

2x + 0 = 60 + 8y

2x = 60 + 8y

Divide each side by '2'.

x = 30 + 4y

Simplifying

x = 30 + 4y

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1. It costs $15.50 to buy 8 yards of material. How much
Levart [38]

Answer:

if you can split it in half its: $38.75

if you cant its: $46.50

Step-by-step explanation:

half:

1. 8+8+4=20

2. 15.50 divided by 2 = 7.75

3. 7.75 + 15.50 + 15.50 = 38.75

not half:

1. 8+8+8= 24

2. 15.50 times 3 = 46.50

8 0
3 years ago
What is the solution to the inequality 2n+5| > 1?
hodyreva [135]

Answer:

n < - 3 or n > - 2

Step-by-step explanation:

Inequalities of the type | x | > a , have solutions of the form

x < - a or x > a

Then

2n + 5 < - 1 or 2n + 5 > 1

Solve both inequalities

2n + 5 < - 1 ( subtract 5 from both sides )

2n < - 6 ( divide both sides by 2 )

n < - 3

OR

2n + 5 > 1 ( subtract 5 from both sides )

2n > - 4 ( divide both sides by 2 )

n > - 2

Solution is n < - 3 or n > - 2

3 0
3 years ago
Figure ABCD is dilated by a scale factor of 1/3. If point B is at (6,-3), where will point B’ be located
Lesechka [4]

Answer:

Step-by-step explanation:

Multiply both numbers by 1/3. That is your new coordinates. (2, -1)

5 0
3 years ago
A company page $48 for two cases of printer paper each case contains 12 packages of paper next month the company’s office manage
Vinvika [58]

Answer:

$360

Step-by-step explanation:

6 0
3 years ago
What should i do now please help me<br><br><br>​
m_a_m_a [10]

Answer:

x=24

Step-by-step explanation:

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12:16=18:x

We multiply 12 by x and 16 by 18:

12x=288

Divide by 12 both sides :

x=24

6 0
3 years ago
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