The height of a triangle is (x - 2) centimeters. The base of the triangle is (x + 7)
centimeters. The area of the triangle is 26 square centimeters. Find the value of x.

6cm

Step by step

Area of a triangle = 1/2bh

(1/2)(6 - 2)(6 + 7) = 26

x = 6cm

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.