Answer:
Step-by-step explanation:
By definition, pi is the ratio of the circumference of a circle to its diameter. In other words, pi equals the circumference divided by the diameter (π = c/d). Conversely, the circumference of a circle is equal to pi times the diameter (c = πd).
Answer: 78
Step-by-step explanation:
![[(12+3)\times5]+3\\(15\times5)+3\\75+3\\\implies\boxed{78}](https://tex.z-dn.net/?f=%5B%2812%2B3%29%5Ctimes5%5D%2B3%5C%5C%2815%5Ctimes5%29%2B3%5C%5C75%2B3%5C%5C%5Cimplies%5Cboxed%7B78%7D)
Answer:
9
Step-by-step explanation:
A quadratic equation is

The axis of symmetry is 1. This means that some value of
-b/2a =1.
f(0) represent one of the horinzontal roots. Since f(0) equal 0, the constant is 0.
Notice how x=1 is the line of symmetry. This means when x=4 and x=-2, the quadratic is equal. so consider this equation.
=-24
16a+4b= -24
4a-2b=-24
Solve for a by elimination.
2(4a-2b=-24)= 8a-4b=-48
Add both equations.
(16a+4b=-24)+(8a-4b=-48)= 24a=-92
Solve for a.
24a=-92
a=-3
Subsitute to in for b.
16(-3)+4b=-24
-48+4b=-24
4b=24
b=6
This means a=-3
b=6
So b-a is
6+3=9