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Vikentia [17]
3 years ago
11

Solve 7+3x-12x=3x+1 What does X equal?? plz help!

Mathematics
1 answer:
ratelena [41]3 years ago
5 0

Answer:

x = 0.5 or \frac{1}{2}

Step-by-step explanation:

7+3x-12x=3x+1

  -3x      =-3x     cross out 3x

7-12x=1  subtract 7 on both sides

-7          =-7

-12x=-6 divide -12 into both sides

\frac{-12x}{-12} = \frac{-6}{-12}  cross out -12 and divide -6/-12 = 0.5

To check

7+3(0.5)=8.5 - 12(0.5)=2.5

3(0.5)=1.5+1= 2.5

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The weights of 40 students were recorded. If the 75th percentile of
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In the given question, there are numerous information's already provided. It is important to note then down first. With the help of those given information's the required answer can be easily reached.
Percentage of students that weighed 140 pounds = 75 percent
Then
Percentage of students that weighed more than 140 pounds = (100 - 75) percent
                                                                                                  = 25 percent
Total number of students that were weighed = 40 students
Total number of students that weighed more than 140 pounds = (25/100) * 40
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