The second one is the write answer
Lets say pi is 3.14
The area of a circle is: pi*radius squared
The radius is half the diameter so it is 5 inches.
3.14*5 squared 2
3.14*25
78.5inches squared
Answer:
66
Step-by-step explanation:
(z-33)/z = 1/2
2z-66=z
z=66
Answer: 20
Step-by-step explanation:
Since Line l is a segment bisector, we know that AM and MC are equal to each other.
6y-4=2y+12 [subtract both sides by 2y]
4y-4=12 [add both sides by 4]
4y=16 [divide both sides by 4]
y=4
Now that we have y, we plug that into AM.
6(4)-4 [multiply]
24-4 [subtract]
20
Now, we know that AM is 20.
Answer:
n = 9
Step-by-step explanation:
20 + 18 + ... + 6 + 4
---------------------------
a = 20 ; d = -2 ; n = ?
--------
4 = 20 + (n-1)(-2)
-16 = (n-1)(-2)
---------
n-1 = 8
n = 9
-------
S(9) = (9/2)(20+4)
S(9) = 4.5*24
S(9) = 108
