When designing a building, you must be sure that the building can withstand hurricane force winds, which have a velocity of 73mi/h or more. the formula f = 0.004av2 gives the force f in pounds exerted by a wind blowing against a flat surface. a is the area of the surface in square feet and v is the wind velocity in miles per hour. how much force is exerted by a wind blowing at 81 mi/h against the side of the building shown?

Answer- 42646.50 pounds

Area of flat surface = Area of rectangle + area of triangle

                                = 12.9*25 + 1/2* 7.2* 25

                                 = 162.5 feet^2

Force exerted by wind =0 .004 * Area * velocity^2

                                      = 42646.50 pounds

they are simplified

step-by-step explanation:

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)