If the product of 1/2 and 2/5 is subtracted from the sum of 1/2 and 2/5 what is the difference

7/10

Step-by-step explanation:

Lets set up this word problem as an equation to make it easier to solve.

1/2+2/5 - 1/2 x 2/5

Now lets solve using PEMDAS:

1/2+2/5 - 1/2 x 2/5           1/2 x 2/5 = 1/5

1/2 + 2/5 - 1/5                  1/2 + 2/5 = 9/10

9/10 - 1/5 = 7/10

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64