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meriva
2 years ago
6

Pls help asap!!! Solve for x . 2x=y

Mathematics
1 answer:
OLEGan [10]2 years ago
6 0
The answer to this question is 0
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The product of two mixed numbers x and y is 10. If x= _ 2/3 and y=_ 3/4 ,<br> find x and y?
Akimi4 [234]

Answer:

  • x = 2 2/3
  • y = 3 3/4

Step-by-step explanation:

There may be other ways to do this. Here's the approach I took. Let the integer part of x be represented by "a", and the integer part of y be represented by "b". Now, we have ...

  (a +2/3)(b +3/4) = 10

Multiplying by 12, this becomes ...

  (3a +2)(4b +3) = 120

There are only 16 divisors of 120, so they can be easily enough checked one at a time.

  120 = 1·120 = 2·60 = 3·40 = 4·30 = 5·24 = 6·20 = 8·15 = 10·12

Of these divisors, the ones that are of the form 3a+2 are ...

  2, 5, 8, 20 . . . . a=0, 1, 2, 6

The ones that are of the form 4b+3 are ...

  3, 15 . . . . b = 0, 3

The factor pair that consists of a number on the first list and a number on the second list is ...

  120 = 8·15

corresponding to a=2 and b=3. So, the mixed numbers you want are ...

  x = 2 2/3

  y = 3 3/4

_____

<em>Check</em>

  (2 2/3)·(3 3/4) =2·3 +2·3/4 +2/3·3 +2/3·3/4 = 6 +6/4 +2 +2/4 = 8+8/4 = 10

6 0
3 years ago
Seventy-five percent of the data falls below what number? <br> 30<br> 12<br> 36<br> 27
padilas [110]
Total number is 40
Percentage asked is 75
\frac{75}{100}  \times 40
= 30
Therefore the correct answer is 30
8 0
2 years ago
Read 2 more answers
PLEASE HELPPP!!!! :(
Svetach [21]

Answer:

i think its c

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What is 4,498,252,900 in scientific notation
madreJ [45]
For every decimal place that you move over, add one to the exponent of the 10.

So in this problem, you would move nine spaces to the left, so the exponent above the 10 would be a nine. 

Therefore, the scientific notation would be:
4.4982529 x 10^9
6 0
3 years ago
Read 2 more answers
Travis painted for 6 2/3 hours. He received $27 an hour for his work. How much was Travis paid for doing this painting job?
mars1129 [50]

Answer:

$180

Step-by-step explanation:

Well because it is $27 per hour, you can start with the whole hours:

6*27=162

then because you are working with fractions you can find what 1/3 of 27 is:

27* (1/3)=9

this tells us that one-third of an hour is worth 9 dollars but because it is 2/3 then you just add another 9. This means 2/3 of 27 is 18.

Then you just add it all up:

162+18=180

8 0
1 year ago
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