Plsss help, I'm very confused

1) 5/3

2) 20/3

3) 20/6 = 10/3

4) 42/42 =1

Step-by-step explanation:

Since the formula for the area of a rectangle is a=lw (area= length times width), you just need to multiply the numbers.

If you are multiplying two fractions, you multiply the numerators(the numbers on top) and the denominators(the numbers on the bottom).

Ex.

If it is a fraction and a whole number, do the same thing, except you should write the whole number as the number over 1.  

Ex.

I hope this helps :)

answer: c i think

step-by-step explanation:

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify