A falling object travels a distance given by the formula d=3t+5t2, where d is measured in feet and t is measured in seconds. How many seconds will it take for the object to travel 84 feet?

3.81 s

Step-by-step explanation:

Let's consider the following formula that represents the journey of a falling object.

d = 3 t + 5 t²

where,

We can find the time that it will take to travel 84 feet by replacing d = 84 in the equation.

84 = 3 t + 5 t²

5 t² + 3 t - 84 = 0

We have a = 5, b = 3 and c = -84. We apply the second grade solving formula.

x₁ = 3.81 and x₂ = -4.41

Since the time cannot be negative, the answer is t = 3.81 s

answer rather than having to add and subtract the measurements of the semi-circle, notice that the semicircle to the left of ad is actually identical in area to the blank semicircle-shaped space to the left of bc. so if we transferred the red semicircle into the blank space, we would end up with a square of side length 24 cm. the area of a square is s^2 = 24^2 = 676 cm^2.

u also answered this so i think u would know but i am here to

put in or use mine

y=-2.5x+12.5

step-by-step explanation:

5y=2x+10

y=0.4x+2

slope=-2.5

5=-2.5*3+b

b=12.5