Answer: something is wrong circumference is solved by pi times the diameter or pi times the radius times 2
40 x 3.14 = 125.6
Step-by-step explanation:
Sorry man

The answer is the third option, -7.
Hope this helps.
Answer:
-2 and 2
Step-by-step explanation: just did the problem
Answer:
x= 21
y= 3
z= 21
Step-by-step explanation:
Let the center be O,
=> Triangle AOD is an Isosceles triangle so AO≅DO, "21 = x"
=> Line AC is divided in two equal parts by the center so if AO= 21 then
7y = 21, and thus "y = 3"
=> BOC is also an Isosceles triangle so CO ≅ BO, if CO = 21 (7y → 7*3) then so will be BO. Therefore "z = 21"
Answer:
-72=-72
Step-by-step explanation:
5n-42=12n
n=-6
5*(-6)-42 = 12*(-6)
-30-42=-72
-72=-72
So, n= -6 is the right number for this equation