A rock is thrown from the top of a tall building. The distance in feet between the rock in the ground t seconds after it is thrown is given by d= -16t^2 -2t + 673. How long after the rock is thrown is it 340 feet from the ground?

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)

People end up tossing 12% of what they buy at the grocery store. assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a. calculate the mean and the standard error for the sample proportion p. b. describe the sampling distribution of p in part a. draw a graph of this probability distribution with its mean and standard deviation. what is the probability that your survey will provide a sample proportion more than 15%? c. d. population proportion? what is the probability that your survey will provide a sample proportion within + 0.03 of the

7x^2-9x+5=0 find the discriminant and number of real solutions