Answer:
d.10
Step-by-step explanation:
Sample size is large enough if both n*p and n*(1 – p) are greater than or equal to 10.
If x=15 then x=30 if y=6 then y=12
32
the greatest common factor of 480 and 128 is 32
480 / 32 = 15
128 / 32 = 4
Alright so basically what you have to do here is realize that 130 miles is 2 hours, so if you divide by 2, you’ll have 65 miles in one hour ,, so 6mph, and if you divide again by two, you have 32.5 miles ,, therefore he travels 32.5 miles in 30 minutes
