Mathematics, 19.07.2019 09:00 chubby087

Will give brainliest solve 2(x + 1) + 4 = 8. 1 6.5 4 3 explain how it is done so i

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We solve this equation by isolating x. We first go about subtracting 4 from both sides
            2(x + 1) + 4 = 8
       2(x + 1) + 4-4 = 8-4
                     2(x+1) = 4
We divide both sides of the equation by 2 so that the 2 over the parentheses cancels out to become a 1.
                     2(x+1) = 4
                  2(x+1)/2 = 4/2
                          x+1 = 2
Subtract 1 from both sides
                         x = 1
The answer is x = 1 as that is the value that will make the equation true. If you substitute x = 1 in for x, you will get
                      2(1 + 1) + 4 = 8
                            2(2) + 4 = 8
                                 4 + 4 = 8
                         8= 8
and that is a true equation.

Answer from: Quest

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step-by-step explanation:

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Answer from: Quest

delaney would like to make a 5lb nut mixture that is 60% peanuts and 40% almonds.

she has several pounds of peanuts and several pounds of a mixture that is 20% peanuts and 80% almonds.

let 'p' represent the number of pounds of peanuts needed to make the new mixture, and

let 'm' represent the number of pounds of the 80% almond-20% peanut mixture.

p + m = 5

therefore

m = (5-p)

write an equation based on the percent of peanuts

1p + .2m = .6(5)

replace m with (5-p)

p + .2(5-p) = .6(5)

p + 1 - .2p = 3

p - .2p = 3 - 1

.8p = 2

p = 2/.8

p = 2.5 lbs of peanuts required

then

5 - 2.5 = 2.5 lbs of the peanut/almond mixture required

a) what is the system that models this situation?

p + m = 5

1p + .2m = .6(5)

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Will give brainliest solve 2(x + 1) + 4 = 8. 1 6.5 4 3 explain how it is done so i...