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omeli [17]
3 years ago
13

If 3x+7=x-1, then does x = -4?

Mathematics
2 answers:
devlian [24]3 years ago
7 0

Hey there!!

To check whether x= -4, let's solve the equation.

Given:

3x+7 = x-1

Subtracting 2x on both sides:

2x + 7 = -1

Subtracting 7 on both sides:

2x = -1-7

2x = -8

Dividing 2 on both sides:

x = -8/2

x = -4

<u><em>Yes, x is -4. </em></u>

<u><em>Hope it helps!</em></u>

iragen [17]3 years ago
6 0

Answer:

Yes

Step-by-step explanation:

You multiply 3 by -4 to get -12, then add 7 to make the left side of the equation -5. On the right side, all you have to do is do -4 minus 1, which is -5. That being said, yes x=-4

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For f(x) = 2x – 3 find f(-1/4)
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  -3 1/2

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Put the argument where the variable is and do the arithmetic.

  f(-1/4) = 2(-1/4) -3 = -1/2 -3

  f(-1/4) = -(3 1/2)

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3 years ago
How do you divide fractions
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6 0
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Solve the equation for the indicated variable<br> x - 3y for y
Colt1911 [192]

Answer:y=x/3

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3 years ago
A company manufactures fuel tanks for cars. The total weekly cost (in dollars) of producing x fuel tanks is given by ... C(x) =
AlexFokin [52]

Answer:

cost of producing the 501st item = $9.92

Step-by-step explanation:

The function representing the cost is given by;

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To get the cost of producing the 501st item, we have to first find the cost of producing 500 items and then do the same for 501 items then subtract the values gotten.

Thus;

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Similarly;

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3 0
2 years ago
A salesman travelled 2/5 of his journey before lunch and 3/8 of his journey after lunch.
AysviL [449]
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7 0
3 years ago
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