Answer:
It is a equation
Step-by-step explanation:
Because it has an equal sign if it does not it will be a expression.
Answer:
Each shirt costed $27
each
Step-by-step explanation:
HOPE IT HELPS!!! please mark brainliest :)
Answer:
b=1/2-9/4c
Step-by-step explanation:
first get B on one side
8b+18c=4
-18c -18c
8b=4-18c
divide both sides by 8
8b=4-18c
/8 /8 /8
b=1/2-9/4c
<span>A direct variation means proportionality. Triangular numbers are quadratic in n. T(n)=n(n+1)/2. So no.</span>
