Answer:
all but the middle
Step-by-step explanation:
did this on a test an got 100%
"y varies directly as x" means y = kx
you do not know what k is yet, other than that it is some constant number.
Now plug in the given values, y=12 when x=4, in the equation
12 = 4k
=> k = 3
Now rewrite the equation with the k value you just found
y = 3k
Substitute 18 in place of x
y = 3(18)
y = 54
Answer:
960
Step-by-step explanation:
We need to find 1/5 of 4800, we will do:
4800/5=960
So 960 is our answer.
<span>Using radian meansure
theta = (arc length)/radius
---
arc length = radius*theta
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Your Problem:
120 degrees = 120(pi/180) = (2/3)pi radians
----
circumference = 2pi*r
24 = 2pi*r
r = 12/pi
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arc length = (12/pi)(2/3)pi = 8 units
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