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ella [17]
3 years ago
9

Simplify 2(5x – 4) + 3x

Mathematics
2 answers:
guapka [62]3 years ago
6 0
To simplify, you must distribute the 2 into the 5x and -4 by multiplying 2 with 5x and 2 with -4.

<span>2(5x – 4) + 3x

2 x 5x = 10x

2 x -4 = -8

 You will get 10x - 8 + 3x

Now you must combine like terms or add like terms. In this case we must add 10x and 3x

10x + 3x = 13x

Finally the answer would be 13x - 8</span>
Leviafan [203]3 years ago
3 0
= 10x-8+3x (multiply 2 with (5x-4))
=13x-8 (then add 10x+3x will give you 13x)

Answer should be 13x-8

Hope this helps!
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Answer:

The guard should be positioned at the safe

Step-by-step explanation:

The night watchmen should be positioned to guard whichever place gives the highest expected value to the thief.

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7 0
3 years ago
on the first of january 2014, carol invested some money in a bank account. The account pays 2.5% interest per year. On the first
almond37 [142]

Answer: £23,360

Step-by-step explanation:

You can use algebra to solve this.

Assume that the original investment is x.

In the beginning of 2015 the balance had increased by 2.5% which is denoted as:

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Carol then withdrew a thousand:

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This value then increased by 2.5% again by the beginning of 2016:

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Relevant expression therefore is:

1.025 *(1.025x - 1,000) = 23,517.60

1.025x - 1,000 = 23,517.60/1.025

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