Area= 1/2(base)(height)
A= 1/2(7)(2)
A= (1*2*7)/2
A= 14/2
A= 7 units squared
Hope this helps! :)
Most students are 67 and 68 inches tall
Answer:

Step-by-step explanation:

Use commutative property of addition 

use associative property of addition 

Hence 
Answer:
Choice C
Step-by-step explanation:
1/2 x < 4 Isolate x by multiplying both sides by 2:-
x < 8
Answer:
x = 25
Step-by-step explanation:
The Exterior Angle Theorem states that the exterior angle of a triangle is equal to the sum of the two opposite interior angles.
This means that
3x - 10 = 25 + (x+15)
3x - 10 = x + 40
Subtract x from both sides of the equation.
2x - 10 = 40
Add 10 to both sides.
2x = 50
Divide both sides by 2.
x = 25