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satela [25.4K]
3 years ago
8

Okay, I’m having a hard time answering these problems. My math teacher explained it but I still just don’t understand. Can any o

f you out there help me? ASAP.

Mathematics
1 answer:
Tju [1.3M]3 years ago
6 0
You just need to match the terms that are the same. Let's look at number one.
2x^2 + 4x +1 + 3x^2 +6x +5 the matching parts:
the 2x^2 and the 3x^2 go together. That means you can combine them here they are positive so you add them.
The 4x and the 6x go together they both only have an x with them. They are both positive so you can add them together.
Last you have a 1 and a 5. These are matching so you can combine them too. They are both positive too so just add them together.
So your final answer would be 5x^2 + 10x + 6. Does that make sense?

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Half the sum of a number and 1.75 is −5.1. Enter your answer as a simplified mixed number
musickatia [10]

The unknown number expressed as a mixed fraction is 11 19/20

Let the unknown number be "x"

The sum of the number and 1.75 is expressed as x + 1.75

Half the sum of a number and 1.75 is 1/2(x+1.75)

Equating the result to -5.1 wil give:

1/2(x+1.75) = -5.1

Solve the resulting equation

x + 1.75 = 2(-5.1)

x + 1.75  = -10.2

x = -10.2 - 1.75

x = 11.95

x = 1195/100

x = 11 95/100

Hence the unknown number expressed as a mixed fraction is 11 19/20

Learn more here: brainly.com/question/14583740

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2 years ago
Answer to the equation -6+2c=3c-(6+5)
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Answer:

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Step-by-step explanation:

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Nine workers are hired to weed a field by
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