No links please. The scale factor between two similar pyramids is 2:3. If the volume of the smaller pyramid is 40, then what is the volume of the larger pyramid?

A: 27
B: 60
C: 90
D: 135

Solve for x, y, and z. show all steps.

Anyone know? will mark brainliest if correct

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.