9, 18, 27, 36…
This is because the growth is linear. When you add 9, you get the next number in the sequence.
Answer:
D
Step-by-step explanation:
r = 5 units

Answer:
28 percent
Step-by-step explanation:
To find what percentage of a number another number is, you can basically just divide it, 21/75 then you can multiply it by 100, so 21/75=0.28, and then 0.28*100=28, 21 is 28 percent of 75
Answer:
a) 357.29 Hz
b) 535.9375 Hz
Step-by-step explanation:
v = Velocity of sound in air = 343 m/s
l = length = 24 cm
a)


∴ Resonant frequency is 357.29 Hz
b) Here one third is filled with soda
So, length becomes 

∴ Resonant frequency is 535.9375 Hz
4 x 10^6 is the answer to the questioin