273.
Another way of stating this is if x/21=13, what is x?
You can find x by multiplying both sides on the equation by 21. You'll end up with x=273.
0.0667
I presume you don't mean 21 minus 13; that is easy enough, and equals 8. If you mean the ratio 13/21, all you do is divide. The answer is 0.1690___.
Just divide 13 by 16 - for example, on a calculator. This will give you the equivalent decimal.
Divide by 3, 7 and 13. 1, 3, 7, 13, 21, 39, 91, 273
To find the average, add up all the numbers and then divide the sum by the number of numbers you added. 7+11+21=39 39/3=13 The average is 13.
Divide 42 by 2 to give you 21.
0.0667
I presume you don't mean 21 minus 13; that is easy enough, and equals 8. If you mean the ratio 13/21, all you do is divide. The answer is 0.1690___.
1 x 21 3 x 7
0.0404
Add them together and divide by 6.
divide by 21
Just divide 13 by 16 - for example, on a calculator. This will give you the equivalent decimal.
Divide by 3, 7 and 13. 1, 3, 7, 13, 21, 39, 91, 273
Add the 4 numbers together and divide by 4, the answer is 17.
It is easy enough to divide by 3, to give the exact quotient as 7.3
21 divide into 6450 = 0.0032558139534883722