R=21. 21/3=7. To check your answer, you can do 7x3 and it'll equal 21.
To find Jenny's age as a percentage of her great grandmother's age :
Answer:
The answer is: A
Step-by-step explanation:
The way the numbers are counting around the wheel and the color pattern all match A
Answer:
y = 4 sin( 0.5t - ) - 2
y = a sin ( 2t - ) + 2
Step-by-step explanation:
In the first question,
amplitude = 4
Period =
phase shift =
Vertical shift = -2
Angular velocity , w =
Here, w = = 0.5
The general equation of a wave is
y = a sin( wt + ∅ )
Putting above values in the equation,
y = 4 sin( 0.5t - ) - 2
In the second question,
Amplitude is not given so we will take it as a.
time period =
w = 2
Phase shift =
Vertical shift = 2
The equation is
y = a sin ( 2t - ) + 2