A rocket sled having an initial speed of 150 mi/h is slowed by a channel of water. Assume that during the braking process, the acceleration a is given by a(v)=−μv2, where v is the velocity andμis a constant.(a) As in Example 4 in the text, use the relation dv/dt=v(dv/dx)to write the equation of motion in terms of v and x.(b) If it requires a distance of 2000 ft to slow the sled to 15 mi/h, determine the value ofμ.(c) Find the timeτrequired to slow the sled to 15 mi/h.

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

If you answer 2+2 you will get over 80 points