1.) A sample of 58 students found that on average, the students spend 185 minutes engaged on physical activity each week. Assume that the standard deviation from a recent study was 28
minutes. Estimate the mean time students spend engaged in physical activity each week using a
confidence interval given a 95% confidence level.
a.) (177.64, 192.36) b.) (177.79, 192.21) C.) (53.634, 62.366) d.) (53.6.62.4)

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

answer: 800

step-by-step explanation:

im not sure what this means: mc011-7.jpg

step-by-step explanation: