Answer:
$3.5
Step-by-step explanation:
21/6=3.5
Answer:
0.15
Step-by-step explanation:
Let x be the amount of cement and y be the amount of sand. If <span>the ratio of cement to sand for mortar is 1:3, then

and y=3x.
</span>
So, if <span>Sandy puts in x=7 shovels of cement, then she puts

shovels of sand.
</span><span>
</span><span>
Answer: 21 shovels of sand.
</span>
parallel when a=2
perpendicular when a=-1/2
Answer:
C
Step-by-step explanation:
If one answer is longer then the others, Then that's the correct answer