Answer: An arc can be measured either in degree or in unit length. A
arc is a portion of the circumference of the circle which is
determined by the size of its corresponding central angle.
Step-by-step explanation:
create a proportion that compares the arc to the whole circle first
in degree measure and then in unit length.
(measure of central angle/360 degrees) = (arc
length/circumference) arc length = (measure of central angle/360
degrees)(circumference)
Answer:
1 = r
Step-by-step explanation:
combine like terms
divide both sides by the same factor
and then simplify.
Let n be a number of balls: n = 14
In one pan you have 8 balls: 8n
In the other pan you have the rest of balls (14 - 8 = 6) along with a <span>weight of 20 grams = 6n + 20
So the pans are balanced:
8n = 6n + 20
Now, just solve the equation:
8n - 6n = 20
2n = 20
n = 20/2
n = 10
So, you know that a ball weights 10 grams.</span>
F(x) = 3/2x - 9
f(-4) = 3/2(-4) - 9
f(-4) = -6 - 9
f(-4) = -15
