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Twice the sum of a number and 5 is 2. What is the number?

Answer 1

Hazel Anglin

The number is -4

Let the number be equal to x #2(x+5)=2# #x+5=1# #x=-4#

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Answer 2

Savannah Anderson

#-4#

We can find out the number by forming an equation and solving it algebraically

#2(x+5)=2#, where #x# is equal to the unknown value

Distribute #2# through the parenthesis

#2x+10=2#

Simplify by subtracting #10# from both sides

#2x=-8#

Divide both sides by #2# to isolate #x#

#x=-4#

The previously unknown number is #-4#

We can double-check this by doing the process the number goes through given in the question:

#-4+5=1#

#2#x#1=2#

#:.# the value of the number #-4#

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Answer 3

Julia Adams

Let's call the number x. According to the given information, the equation is: 2(x + 5) = 2. Solving for x, we get: x + 5 = 1, x = -4. So, the number is -4.

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Answer 4

Eli Assouline

The number is -4.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.