Let (x, d) be a metric space, and suppose a and b are subsetsof
x. prove the following statements.
(a) if a is contained in b then the closure of a is
containedin b.
(b) the closure of (a union b) = the closure of a union
theclosure of b.
(c) the closure of (a intersect b) is contained in the
closureof a intersect the closure of b.

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents

Two researchers are attempting to create a new psychotherapy protocol that more reduces panic attacks. they believe that they have succeeded and are now in the clinical trial period of their protocol's development. they are working with several cohort groups, some of which have been through the new protocol, while others have done the standard protocol currently recommended. if these researchers are interested in evaluating the difference in the percentage of test subjects who successfully decreased their panic attacks in 2 months on the new protocol versus the percentage of test subjects who successfully decreased their panic attacks in 2 months with the traditional protocol, which of the following statistical tests would be most appropriate? a. analysis of variance (anova) b. correlation c. chi-square test d. paired t-test e. independent t-test

Pls i’m super dumb and i need with this one it’s due tomorrow