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Oliga [24]
3 years ago
12

The sum of two numbers is 21. the second number is six times the first number.

Mathematics
1 answer:
Tamiku [17]3 years ago
8 0

Answer:

Therefore first number is 3 and second number is 18

Step-by-step explanation:

Sum of the two numbers is 21 and Second number is six times the first number

x+6x = 21

 7x = 21

x = 21/7

x = 3

substitute x value in 6x to find second number,

 = 6x

 = 6*3

 = 18

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How to multiply mixed fractions
morpeh [17]

Answer:

Ez

Step-by-step explanation:

Change each number to an improper fraction.

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Check to be sure the answer makes sense.

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Need help for 16) and 19) Solve each equation and check. Show all work please
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Step-by-step explanation:

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16. \frac{k}{2}=(-5)^2

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19. \frac{r}{3}=\frac{121}{11}

This is a pretty easy one. If you didn't know, 121/11 is actually 11 :)

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Simply multiply by 3 to isolate r :)

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4 0
3 years ago
Read 2 more answers
What is the greatest common factor of 42, 56, and 112
VashaNatasha [74]

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Step-by-step explanation:

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Please help!<br><br> <img src="https://tex.z-dn.net/?f=%5Cfrac%7B4.2%7D%7B7%5Cfrac%7B5%7D%7B7%7D%20%7D%20%3D%20%20%5Cfrac%7B3%5C
emmasim [6.3K]

Answer:

d = 40/7

Step-by-step explanation:

Solve for d:

0.544444 = 28/(9 d)

0.544444 = 49/90:

49/90 = 28/(9 d)

49/90 = 28/(9 d) is equivalent to 28/(9 d) = 49/90:

28/(9 d) = 49/90

Take the reciprocal of both sides:

(9 d)/28 = 90/49

Multiply both sides by 28/9:

Answer:  d = 40/7

5 0
3 years ago
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