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Alborosie
3 years ago
14

Set 4x equal to x+30 and solve.

Mathematics
1 answer:
prisoha [69]3 years ago
7 0

Answer:

x = 10

Step-by-step explanation:

1) Subtract x from both sides.

4x − x = 30

2) Simplify 4−x to 3x

3x = 30

3) Divide both sides by 3

x = \frac{30}{3}

4) Simplify \frac{30}{3} to 10

x = 10

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The price of an item has risen to $120 today. Yesterday it was $40. Find the percentage increase.
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Answer:

200%

Step-by-step explanation:

If $40 is 100% then multiply it by 3 to get $120

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3 years ago
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A baby weighs 8 pounds 10 ounces. If her weight doubles in 6 months, how much will she weigh in 6 months?
mr Goodwill [35]
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1/2x-7=1/3(x-12) pls find the value of x
KIM [24]

Answer:

x=18

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

(1 /2 )x−7 =  (1 /3 )x−4 (Distribute)

Step 2: Subtract 1/3x from both sides.

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Step 3: Add 7 to both sides.

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Step 4: Multiply both sides by 6.

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6 0
4 years ago
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A movie club charges a one-time
Mama L [17]

Answer:

Step-by-step explanation:

Club A charges $30 membership fee and charges $7 for each movie.

You can write this as :

A = 30 + 7m  (where m = number of movies)

Club B charges no membership fee and it costs $12 for each movie.

B = 12m

If we want to find how many movies a member must purchase for the total cost of the two clubs to be the same, this means we are trying to solve for "m" (number of movies) when A = B.

30 + 7m = 12m

Now you can just subtract 7m from both sides.

30 = 5m

Divide both sides by 5 to find "m'.

m = 30/5 = 6

Therefore a member must purchase 6 movies

6 0
3 years ago
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Lana71 [14]

Answer:

Peat's Pizza is is the one Tina should order from.

Step-by-step explanation:

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5 0
3 years ago
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