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juin [17]
4 years ago
15

How to solve this equation 5+3x=x-7

Mathematics
1 answer:
Luda [366]4 years ago
4 0

Answer:

-6

Step-by-step explanation:

5+3x=x-7

  -x    -x

5+2x=-7

-5       -5

<u>2x</u>=<u>-12</u>

2      2

x=-6

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Can someone please help me with 2 math questions.
Sav [38]

Answer:

Step-by-step explanation:

1) $399 = 84% of the original amount

Divide both sides by 84 to get what one percent would be

$4.75 = 1%

Then multiply both sides to get one hundred percent [the original price]

$475 =100%

Use this method to do the second question

$450.50 = 85%

Divide by 85

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Multiply by 100

$530 = original price

6 0
3 years ago
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Naomi went on a 6.5 mile hike. In the morning she hiked 1.75 miles, rested,and then hiked 2.4 more miles. She completed the hike
Ulleksa [173]
She hiked 6.5 miles in total and it basically tells you she hiked 1.75 miles and 2.4 miles in the morning which equals 4.15 miles in the morning. to find how many miles she walked in the afternoon you just subtract the morning miles 4.15 from the total miles 6.5
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then to find how many more miles she walked in the morning you just subtract the morning from the afternoon
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7 0
4 years ago
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72% of 25 students are not good in maths. How many are not good in maths?
likoan [24]

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Step-by-step explanation:

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The answer is D.............
8 0
4 years ago
If there are 40% of girls and 250 are boys, find
oee [108]

Step-by-step answer:

If there are 40% students that are girls , and the rest are 250 boys. Then that must mean there are 60% boys. Because that is the compliment.

i)

Because we know that 60% of the people in the group are boys, and that the amount of boys amounts to 250, we can model an equation like this.

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Because we know that the total amount is 417, we can find the amount of girls there are by multiplying the total by the percentage.

417 * 0.4 = 167

There are 167 students that are girls.

8 0
2 years ago
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