What is the hydrogen ion concentration of a solution with a pH of 4.2? a) 3.2 x 10-6 M
b) 2.7 x 10-9M
c) 6.4 x 10-5 M
d) 1.0 x 10-6 M.

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b

Point b lies between points a and c on . let x represent the length of segment ab in inches. use the segment to complete the statements. the value of x is . the length of in inches is . the length of in inches is .

Angles 1 and 2 are complimentary angles. angle 1 = 52 degrees. what is the measure of angle 2?