Answer:
x = -9
Step-by-step explanation:
Normally 18/2 is 9, but since we’re dividing by a negative, the 9 becomes negative.
So 18/-2 is -9.
So with this equation, since the volume of the cylinder is 96 pi, plug that into the V variable, and since the radius of one of the marbles is 3, plug that into the r variable. From here, we can solve for x: 
Firstly, solve the parentheses: 
Next, multiply 36 pi and x: 
Next, subtract 24 pi on both sides: 
Lastly, divide both sides by 36 pi, and your answer will be
, or B.
Answer:
65°
Step-by-step explanation:
2x= 130° (vertically opposite angles)
x= 130/2
x= 65°
Answer: im pretty sure its c
Step-by-step explanation: the numbers start at negative and show it is less then until it is it at the highest positive number
(I)
firstly , we will find maximum and minimum y-value
we can see that
maximum value is 5
minimum value is -5
so, we can find amplitude

..........Answer
(II)
we know that
wave length is the length of one wave
we can see that from B to F , there is one wave
and we are given it's length as 20cm
so, wavelength is 20cm......Answer
(III)
we know that

we are given
frequency =100hz
wavelength =20cm
now, we can find velocity

............Answer