Acollection of nickels and quarters has a total value of three dollars and contains 32 coins. which of the following systems of equations could be used to find the number of each coin?
n + q = 32 and 5n + 25q = 3
n + q = 32 and .5n + .25q = 3.00
n + q = 32 and .05n + .25q = 300
n + q = 32 and .05n + .25q = 3.00

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Suppose m: angle a =77 degrees what is the measure of a complement of a complement of angle a, what is a conclusion you can draw about a complement of a complement of an angle

2.12 school absences. data collected at elementary schools in dekalb county, ga suggest that each year roughly 25% of students miss exactly one day of school, 15% miss 2 days, and 28% miss 3 or more days due to sickness.61 (a) what is the probability that a student chosen at random doesn’t miss any days of school due to sickness this year? (b) what is the probability that a student chosen at random misses no more than one day? (c) what is the probability that a student chosen at random misses at least one day? (d) if a parent has two kids at a dekalb county elementary school, what is the probability that neither kid will miss any school? note any assumption you must make to answer this question. (e) if a parent has two kids at a dekalb county elementary school, what is the probability that both kids will miss some school, i. e. at least one day? note any assumption you make.