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AlekseyPX
3 years ago
15

For which value of x is the equation 2(1 + x) = x + 3 true? A) 1 B) 2 C) 3 D) 4

Mathematics
1 answer:
amm18123 years ago
5 0

Answer:

A) 1

Step-by-step explanation:

To solve, just plug in the numbers to the equation for x until both sides are equal to each other.

Plug in 1:

2(1 + x) = x + 3

Let x = 1:

2(1 + 1) = 1 + 3

Solve. Remember to follow PEMDAS. First, add parenthesis, then multiply. On the other side, add:

2(1 + 1) = 1 + 3

2(2) = 4

4 = 4 (True)

A) 1 is your answer.

~

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Answer:

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Step-by-step explanation:

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3 years ago
What times what equals 30 but add to get 40?
musickatia [10]
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a*b = 30
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therefore:
<span>a*b = 30
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b = (40 +- √(1600 - 120))/2
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