Answer:
8 cm
Step-by-step explanation:
Let x cm be the length of the base, then the length of the height is x+7 cm. Use formula for the area of the triangle:
In your case,
Since the base cannot have negative length, then x=8 cm.
4+3=7 ---> 7 divided by 5 = 7/5, 1 and 1/2 or 1.4
20 is the answer to the question you asked.
A conversion factor can be more accurately described as a UNIT. A unit is something equivalent to 1. When we multiply something by 1, it doesn't change it's value, although it might change how it looks.
Example:
1 foot = 12 inches
Dividing both sides by 12 inches gives us this unit,
So when we multiply a quantity by (1foot)/(12inches),
we're really just multiplying that quantity by 1,
which doesn't change its value.