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Andrei [34K]
3 years ago
12

What is the sum of (x^2+6x-5) + (2x^2+15)

Mathematics
1 answer:
dangina [55]3 years ago
8 0

Answer:

3x^2 + 6x + 10

Step-by-step explanation:

Because we're adding it, it doesn't matter if we just take out the parenthesis.

X^2 + 2x^2 gives us 3x^2.

6x stays the same.

-5 + 15 gives us 10.

3x^2 + 6x + 10

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The sum of three consecutive even integers is 126. Let x represent the least consecutive integer. What equation could be used to
DanielleElmas [232]
The integers are x, x + 2 and x + 4

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3x + 6 = 126
3x = 126 - 6 = 120
x = 120/3 = 40

The least consecutive integer is 40
The second consecutive integer is 42
The greatest consecutive integer is 44.
Therefore, the numbers are 40, 42 and 44
4 0
3 years ago
Hiking Two hikers are walking along a marked trail. The first hiker starts at a
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Answer:

You can find your answer here

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Step-by-step explanation:

(just log into your account and it will let you see it)

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Answer:

5 to 4

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7 0
2 years ago
In this sentence, what part of speech is the word in bold? Many trees mature in about thirty years.
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8 0
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All real numbers

Step-by-step explanation:

 

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