just answering so no links can answer
Answer:
(5 + x)(5 - x)
Step-by-step explanation:

Simple. Mass has to do with weight, so if mass decreases then so will the weight
Answer: Multiply the diameter by Pi, which in school lessons usually just use 3.14
Step-by-step explanation:
So 3.14 multiplied by the diameter of 9.
please mark brainliest
A = 40° (Vertically opposite angles)
b = 180 - 90 - 40 = 50° (Angles in a triangle add up to 180)
c = 180 - 65 = 115° (Adjacent angles on a straight line)