Answer:
E
Step-by-step explanation:
AP Classroom says so.
Answer:
There is no equation to answer
Step-by-step explanation:
Answer:
A certain element has 25 protons.
Step-by-step explanation:
Please mark brainliest
Answer:
540°
Step-by-step explanation:
Formula: note that n means nr of sides
(n-2)×180°
(5-2)×180°=3×180=540°
Where each angle are 540°÷5=108°
Alright. For the first one, we must think, thirty percent of what number is equal to twelve? We can right that in equation form as
