Answer:
B
Step-by-step explanation:
Answer:
Step-by-step explanation:
×7 = 
Answer:
10 units
Step-by-step explanation:
Area of a triangle is
= Area
where h is the height, and b is the base
We can substitute these values into the area equation and get:

Multiply both sides by 2:
x * 10 = 100
Divide both sides by 10:
x = 10
The missing side is 10 units long