Answer:
x = 60.
Step-by-step explanation:
Vertical angles are congruent so
x + 20 = 80
x = 80 - 20 = 60.
Answer:
measure of each angle of a regular octagon=360/8=45°
at the point, 60°+x+45=360°
x=255°
25$
Step-by-step explanation:
12+12= 24
Nate has one left
12+12+1=25
Answer:
45
Step-by-step explanation:
6 × 3 = 18
9 × 3 = 27
18 + 27 = 45
Answer:
Scientific notation is a way of writing long numbers, often with a lot of zeros, in a shorter and easier to read format.
Step-by-step explanation:
As an example I will use 360
first move the decimal so the number is larger than one but less than ten
So the number will be 3.60
to make it equal to 360 it would be 3.6 x 10^2 multiplying 3.6 by 10 to the power of 2 will make it 360. for a more in depth and probably better explination I would check khan academy.
