The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the land, is 1.9m. the length of pole's shadow is 1.52m. what is the height of the building?

The height of the building = 45 m

Step-by-step explanation:

∵ The length of a shadow of the building = 36 m

∵ The length of a shadow of the pole = 1.52 m

∵ The height of the pole = 1.9 m

∴ height building/height pole = shadow building/shadow pole

∴ h/1.9 = 36/1.52

∴ h = (1.9 × 36) ÷ 1.52 = 45 m

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)

answer: 5100 just subtract

step-by-step explanation: