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WITCHER [35]
3 years ago
8

Simplify the expression: 2(3n+4)-2(2n+5)

Mathematics
2 answers:
inessss [21]3 years ago
4 0
First use distributive property:
2(3n + 4) - 2(2n + 5)
6n + 8 - 4n - 10
Group like terms:
6n - 4n + 8 - 10
Add like terms:
2n - 2
Rom4ik [11]3 years ago
4 0
First, distribute;
2(3n + 4) - 2(2n + 5)
(6n + 8) - (4n - 10)
2n - 2
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Step-by-step explanation:

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Pls help, 20 points!!
klemol [59]

Answer:

(-18,9)

Step-by-step explanation (work shown in picture attached):

1) The first step in solving by substitution is to isolate the y-term in one of the equations if it is not already isolated. Isolate y in the first equation by dividing both sides by -2. This leaves us with the equation y = \frac{-x}{2}

2) Now, substitute \frac{-x}{2} for the y in the second equation. Simplify and isolate x. (You can multiply everything by -2 to get rid of the fraction.) This leaves us with x = -18.

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7 0
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babunello [35]

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7 0
3 years ago
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Karolina [17]

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balu736 [363]

Answer:

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Step-by-step explanation:

The volume of a cylinder is calculated using

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3 years ago
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