In a parallel circuit, et = 120 v, r = 30 ω, and xl = 40 ω. what is ir?

There are 20 children in the cast of a class play and 8 of the children are boys of the boys 4 have a speaking part in the play and of the girls 8 do not have a speaking part in the play if a child from the cast of the place chosen at random what is the probability that the child has a speaking part

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?