Are the rational numbers a subset of the set of all real numbers? Are the rational numbers a subset of the irrational numbers?

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18

If jobs arrive every 15 seconds on average, what is the probability of waiting more than 30 seconds?