Find the AOS, vertex and sketch the parabola.
5) y=-x2 + 4x+3
vertex:
AOS:

Asystem of linear equations contains two equations with the same slope. select all of the correct statements. i a. the system may have two solutions. - b. the system may have infinitely many solutions. c. the system may have one solution. o d. the system may have no solution. submit

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.

Using this spinner and a number cube, which simulation would you answer this question? a school survey of 90 sixth graders showed that 25% of them play basketball and about 17% play soccer. what are the chances that a sixth grader plays basketball and soccer?