Atree casts a shadow 30 ft long. at the same time, the shadow cast by a vertical 8ft pole is 5 ft long. find the height of the tree.

Since this is a similar triangle problem, we will put the corresponding measurements with the other triangle. Then cross multiply.

Solve.

The height of the tree is 48 feet.

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)