Distribute the outside number (the 2 fractions in this case) to the numbers in the parenthesis. Multiply them and then solve for the variable. To solve for variable just add or subtract the constant (add if negative subtract if positive). Then divide each side with the number paired with the variable.
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Answer: 8 and 80
Step-by-step explanation:
8 * 5 = 40
8 * 10 = 80
8 must be the hcf of two separate numbers. So, one of them must be 8, and the other must be greater than 8.
Multiples of 8:
8
16
24
32
40
48
56
64
72
80
The numbers on that list that multiply evenly to 80:
8, 16, 40, 80
16 is the lowest common multiple of 16 and 8
40 is the lowest common multiple of 40 and 8
80 is the lowest common multiple of 80 and 8
So the two numbers are 8 and 80; the highest common factor (HCF) is indeed 8.
You've got 19 numbers. Their sum is 10(1+2+3+...+19) or
![10*\frac{20*19}{2}](https://tex.z-dn.net/?f=10%2A%5Cfrac%7B20%2A19%7D%7B2%7D)
. Divide that by 19, to get
Final Answer is 4.5
= 4.5hours more time was used on games than on research.
Answer:
1/2
Step-by-step explanation:
If there are 12 pies, and 6 are apple, then 6/12 would represent the remaining apple pies.
Now simplify 6/12
It would be 1/2