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defon
4 years ago
10

The equation is ax+r=7 how do I solve for r??

Mathematics
2 answers:
Strike441 [17]4 years ago
7 0
The solution is r= 7/a-x How did i do this?
Your equation is ax+ r=7, so the goal is to isolate the r. You begin by dividing the a from the ax. Remember, what you do to one side, you must do to the other. So you do 7/a, since you can't simplify 7/a, leave it as it is. Next, your equation should look like this x+r=7/a. In order to isolate the r, you move the x to the other side by subtracting, which leaves you with the answer of r= 7/a-x.
Hope this helped!
exis [7]4 years ago
3 0
1. Divide each side by a
2. Subtract x from each side and you'll be left with r

Answer: (7/a)-x = r
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KATRIN_1 [288]

Samantha measured 13\frac{1}{8} inches for the entire month

Step-by-step explanation:

Samantha is measuring the snowfall in a snow Gog for her science project

  • The first week she measured 3 3/4 inches of snow
  • The second week she measured twice as much snow, and the third week she measured half as much snow as the first week
  • It did not snow at all in the fourth week

We need to find how much snowfall Samantha measured for the entire month

∵ She measured 3\frac{3}{4} inches of snow in the 1st week

- Change the mixed number to improper fraction

∵ 3\frac{3}{4}=\frac{(3)(4)+3}{4}=\frac{12+3}{4}=\frac{15}{4}

∴ She measured \frac{15}{4} inches of snow in the 1st week

∵ She measured twice as much snow as the 1st week in the 2nd week

- Multiply the value of the 1st week by 2

∵ \frac{15}{4} × 2 =  \frac{30}{4}

∴ She measured \frac{30}{4} inches of snow in the 2nd week

∵ She measured half as much snow as the 1st week in the 3rd week

- Multiply the value of the 1st week by 1/2

∵ \frac{15}{4} × \frac{1}{2} =  \frac{15}{8}

∴ She measured \frac{15}{8} inches of snow in the 3rd week

∵ It did not snow at all in the fourth week

- Add the values of the three weeks above to find the amount

  of snowfall she measured for the entire month

∵ The amount of snowfall = \frac{15}{4}+\frac{30}{4}+\frac{15}{8}

- To add the fraction you must make all the denominator same number

  so multiply the 1st and 2nd fractions by 2 up and down to make all

  the denominator equal 8

∴ The amount of snowfall = \frac{30}{8}+\frac{60}{8}+\frac{15}{8}

- Add the numerators and put the sum over 8

∴ The amount of snowfall = \frac{105}{8}

- You can change the improper fraction to mixed number by divide

  105 by 8 and put the reminder over 8

∵ 105 ÷ 8 = 13 and 1/8

∴ The amount of the snowfall = 13\frac{1}{8} inches

Samantha measured 13\frac{1}{8} inches for the entire month

Learn more:

You can learn more about the fraction in brainly.com/question/1312102

#LearnwithBrinaly

6 0
3 years ago
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