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Brilliant_brown [7]
3 years ago
8

Two math questions

Mathematics
1 answer:
Ivenika [448]3 years ago
5 0
1. Substitute y in the first equation into the second one.
x+4=-2x-2

Add 2x to both sides
3x+4=-2

Subtract 4 from both sides
3x=-6

Divide both sides by 3
x=-2

Plug in the x value
y=-2+4
y=2

Final answer: (-2,2)

2. There are 0 solutions because the lines are parallel and will never cross each other
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(24+2)+2=28.

First, you work with the parentheses. (24+2)=26. So now your expression is 26+2. Lastly, you solve the expression. 26+2=28.
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Describe and correct the error in finding the solution.​
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4 years ago
In a list of five consecutive odd integers, the sum of the first and double the last is 139. What is the largest sum?
Leviafan [203]

Answer: 49

Step-by-step explanation:

From your question, I think you mean the largest number. The answer is given below.

Let the five consecutive odd numbers be:

a, a+2, a+4, a+6 and a+8.

Thee sum of the first and double the last is 139. This can be written as:

a + 2(a+8) = 139

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a = 123/3

a = 41

The first number = 41

The largest number = a+8 = 41 + 8 = 49.

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Answer:

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