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eduard
3 years ago
10

If the ratio of b to a is equal to 6 and the difference of b and a is 12, what is the value of a?

Mathematics
1 answer:
Reil [10]3 years ago
3 0

Answer:

  a = 2.4

Step-by-step explanation:

The problem statement tells you ...

  b/a = 6

  b - a = 12

Using the first equation, we can write an expression for b:

  b = 6a . . . . . . . multiply both sides by "a"

This can be substituted into the second equation to find a value for "a":

  6a -a = 12

  5a = 12

  a = 12/5 = 2.4

The value of a is 2.4.

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6 0
3 years ago
How do you do that?????
Elden [556K]
This question is easy once you understand. So when adding, subtracting, multiplying, or dividing with whole numbers you turn it into a fraction. So 12 is going to become 12/1. 8 1/8 is a mixed number so we have to turn it into an incomplete fraction. Here is how you do it. Multiply the denominator by the who number. So 8 x 8 = 64. Then you add your product to the numerator, which will make it 65. Then after this you keep your denominator giving you 65/8. Now we have to find the common denominator by finding the LCM. So the LCM is 8. Next we divide the old denominator by the new denominator. So 1 goes into 8, 8 times. And next 8 x the numerator. so 8 x 12 = 96. We do the same to the other side. Now we have 96/8 - 65/8 = 31/8. Finally we make this a mixed number. So 31 divided by 8. So you should get 3 7/8. 

I hope this helps! :)
5 0
2 years ago
Which statement is correct?<br> A. <br> B. <br> C. <br> D.
geniusboy [140]

Answer:

B

Step-by-step explanation:

Answer:

B

Step by Step explanation:

So since the equation says that 8 is less than the square root for b, It is correct because the square root of 72 would be 8.48528137424. Which of course 8, is less than that. But it also says that the square root of 72 is less than 9. Which based on my calculations would be correct.

6 0
3 years ago
Read 2 more answers
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