The diving from a cliff can be expressed in the equation H = Ho + vot - 1/2 g t^2 where vo as initial velocity is equal to zero since this is a free fall. g is equal to 32.2 ft/s2 as the acceleration due to gravity and Ho is equal to 40 feet. The expression now becomes H = 40- 16.1 t^2. When t is 1 second, H is equal to 23.9 feet. The total time of the diver is 0 = 40 - 16.1 t^2 or t equal to 1.58 seconds.
Answer:
c=cost of one chair rental
t=cost of one table rental
8c+3t=42
2c+5t=53
multiply the second equation, each term on both sides, by -4
8c+3t=42
-8c-20t=-212
add the two equations
-17t=-170
divide both sides by -17
t=$10 to rent one table
substitute t=10 into either original equation
2c+5(10)=53
2c+50=53
2c=3
c=$1.50 to rent one chair
B is the correct answer.
8 x 35 = 280
Hey the answer is -0.2. You have to divide 10 by both sides to isolate the variable