Let:
x= quarters
y= dimes
x+y=67
and
.25x+.10y=12.40
x=67-y
.25(67-y)+.10y=12.40
16.75-.25y+10y=12.40
16.75-.15y=12.40
Lets rearrange this:
-.15y+16.75=12.40
-16.75 -16.75
-.15y=-4.35
the negatives cancel out
.<u>15y</u>=<u>4.35
</u>.15<em /><em> <u /></em>.15
y=29
Back to the original x=67-y
x=67-29
x=38
So,
x=38
y=29
<em />
The length in tiles is 15 long. You use proportion, 12/8 is 1.5 and 10x1.5 is 15.
Answer: it is most definately A
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
378 divided by 9 = 42
210 divided by 42=5
