(i) Question
The amplitude A of oscillation of a spring decreases with time tand an
experiment yields the following data:
(t)
Time + (seconds) | 20 40
60
80 100
Amplitude Almm) 268 180 | 120 | 81 54
5.59 5.19 4.78 4039
3.98
The relationship between the amplitude A and the time t is known to be of the
form,
A = 40e-kt
a) Show that the formula for Timplies that In(A) = -kt +3.7
b) Draw the straight line that best fits the readings of In(A) against t and
hence calculate k.
c) Write down the formula relating A and t. Use this formula to
determine the amplitude after 50 seconds.

not enough information

step-by-step explanation:

we cannot know this, because the other students could have handed out 10 flyers, or they could have handed out 100. one way, the mean would go up, and another way, the mean would go down.

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

slope is 35 and 20 miles is the y-intercept.

step-by-step explanation:

70.30

step-by-step explanation: