Auto companies frequently test the safety of automobiles by putting them through crash tests to observe the integrity of the
passenger compartment. If a 1500 kg car is sent toward a cement wall with a speed of 12 m/s and the impact brings it to a stop in
0.09 s. What is the average force needed to bring it to rest?
a. 160, 000N
b. 200,000N
c. 1620N
d. 5x10-6N

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.