You have to subtract both sides by 64 and you will get,
-50 = 5z. Then divide both sides by 5, and you get -10 = z.
B
The formula for circumference is
d, or Pi times diameter
The answer is 4 because 2--2 the two negatives make it a positive so its 2+2=4
Answer:
1950.54
Step-by-step explanation:
1950.54
The polygon in option 3 is not octagon at all, it is heptagon (or 7-sided polygon).
A convex octagon has no angles pointing inwards. More precisely, no internal angles can be more than 180°.
When some internal angle is greater than 180°, it is concave.
In option 2 you can see that one angle is pointing inward, then this octagon is concave.
Answer: correct choice is B.
