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olya-2409 [2.1K]
3 years ago
10

.nxmdmxmxmdmmddmm mcmcmfmfmcmxmcmc fnnffn

Mathematics
1 answer:
lilavasa [31]3 years ago
6 0

Answer:

what do you want to ask brother...

Step-by-step explanation:

or you post this by mistake.....

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A survey reveals that the sales of smartphones is increasing considerably. The average annual sales of smartphones, in million u
padilas [110]

Answer:

C. When the survey was initially conducted average sales of smartphones was 1.7 millions units.

Step-by-step explanation:

We have been given that the average annual sales of smartphones, in million units, n years after the survey is conducted is modeled by function p(n)=1.7\cdot b^n, where the parameter b is an unknown positive base.


We are asked to find the true statement about our given function.

A. If b= 1.45, the annual growth rate of the sales of smartphones is 145%.

Since we know that b equals (1+r) for growth function, where r is in decimal form.

If b=1.45, it means that the annual growth rate will be 45% as 0.45 is decimal form of 45%, therefore, statement A is not true.

B.  If b= 1.02, annual sales of smartphones will double in 2 years.

If b=1.02, it means that the annual growth rate will be 2% as 0.02 is decimal form of 2%, therefore, statement B is not true.

C. When the survey was initially conducted average sales of smartphones was 1.7 millions units.

Since we know that an exponential function is in form y=a*b^x, where a in initial value of function. We can see from our given function that a equals 1.7, therefore option C is a true statement.

D. The average sales of smartphones increases by 1.7 millions units every year.

Since our function is not a linear function, instead it is an exponential function, so rate of change can not be constant.

Therefore, option D is not true regarding our given function.

7 0
3 years ago
Please help me quickly
Mumz [18]
Y is less than or equal to -1
7 0
3 years ago
Read 2 more answers
(08.05 lc) of a semicircle was rotated about the y-axis, like the one shown below, what would be the resulting three-dimensional
PIT_PIT [208]
It would be a sphere

3 0
3 years ago
Read 2 more answers
I need help with this please. :) thanks
IgorC [24]

Answer:

d.  V = π(x^3 + 90x^2 + 2,400x  + 20,000)

Step-by-step explanation:

volume of cylinder = πr^2h

We have r = x + 20; h = x + 50

V = π(x + 20)^2(x + 50)

V = π(x^2 + 40x + 400)(x + 50)

V = π(x^3 + 50x^2 + 40x^2 + 2000x + 400x + 20,000)

V = π(x^3 + 90x^2 + 2,400x  + 20,000)

8 0
3 years ago
You bought a car for $20,000. You have owned it for one year, and it is now worth $16,000. What is the percent decrease in your
Ganezh [65]
I think it'd be 20%.. I could be wrong. 
7 0
3 years ago
Read 2 more answers
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