X^2 - 3x + 9
(-1)^2 - 3(-1) + 9
1 - 3(-1) + 9
1 + 3 + 9
13
Answer:
8190 ways
Step-by-step explanation:
Given


Selection


Required
Number of ways of selection
4 students can be selected from 15 students in:

Similarly.
5 teachers can be selected from 6 teachers in:

So, the required number of selection is:

Apply combination formula:







Answer:
I'm not sure but I did do it on a calculator so 1.515-1.56= -0.045
Answer:
what is the circle.
Circumference is diameter x 3.14.
Diameter is the whith of a circle.
Ex. diameter = 4
4 x 3.14 = 12.6cm.
Step-by-step explanation:
1)find the area of a triangle. Multiply it by 2 or 4 depending on if they are the same size
2)find the area of the base
3)find the area of the other two sides if you haven’t already.
4) add them all together