1. The point where x and y axis meet is the intersect, origin of the coordinate system (0,0)
2. m<A and m<D = 90 then <A and D are complementary angles
3. 180 angle or linear rays
4. Obtuse angle measure more than 90
5. Segment of equal lengths are congruent segments
6. Lines that meet at a 90 angle are perpendicular
Answer:

Step-by-step explanation:
Given
The above table
Required
The standard deviation
First, calculate the class mid-point. This is the average of the class interval.
The mid-point x is:





So, we have:

Calculate mean




The standard deviation is:




The answer is 2X^3+12x^2+10x-24
Answer:
I think it's 39 I'm wrong but that's what I think sorry
Answer:
45%
Step-by-step explanation:
900/2000 x 100% = 45%
Hope this helps :)