Ax+b=y
put the both values the left one is x and the right one is y
(1,3)=> a+b=3
(2,1)=> 2a+b=1
subtract both of the equations you will get -a=2
so a=-2 and put a in any of the equation you will get b is 5 so the equation is -2x+5=y
the slope is the x’s number so it’s -2
Answer:180(D)
Step-by-step explanation: First, do 72/x=40/100. Then, cross muliply which is 7200 and 40*x. do 7200/40. The answer should be 180.
Answer:
495 ways
Step-by-step explanation:
We solve this above question busing the combination formula
C(n,r) = nCr
= n!/(n - r)! × r!
We are told in the question that:
A textbook search committee is considering 12 books for possible adoption the committee has decided to select 8 of the 12 for further consideration
C(12, 8)
n = 12
r = 8
12C8 = 12!/8! × (12 - 8)!
= 12!/8! × 4!
= 495 ways
Theres nothing there, it's just the question
C = pi * D
since the diameter is 2 * r