Jordan wants to solve the following system using the elimination method: 2x + 3y = 10 x + y = 7 what number should the equation x + y = 7 be multiplied by to eliminate y? select one: a. −2 b. 2 c. −3 d. 3

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Is the underlined participial phrase correctly placed or misplaced? i smelled each and every flower strolling through the garden. a. correctly placed participial phrase b. misplaced participial phrase

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.