Answer:
30 X .8=24 30-24=6 bill got 6 questions wrong
Answer:B
Step-by-step explanation:
From the 3 options listed, both

in and

in could be measures found using a ruler with eighth inches marked, because those decimals can be written in terms of eighth fractions.

The other option,

in, is not a possibility because 0.1 cannot be written as a fraction of 8 that is marked on the ruler.
Answer:
sorry im not sure about the answer but this is how you figure it out
Step-by-step explanation:
50a+30b=550
after you simplify = 5a+3b=55
44a+36b=532
after you simplify=11a+9b=133
then you try to find a number
5a+3b=55
then you have to find different possibilities of a and b and if it can fit into both equations then it is correct
" of " means multiply
1/4 * 3.20/1...and just multiply....(1 * 3.20) / (4 * 1) = 3.20/4 = 0.8
or
1/4 = 0.25.....0.25(3.20) = 0.8