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bonufazy [111]
3 years ago
13

Given the function ƒ(x) = 9x2 + 27x + 2, find ƒ(2).

Mathematics
2 answers:
deff fn [24]3 years ago
8 0

Answer:  The correct option is

(C) f(2) = 92.

Step-by-step explanation:  We are given the following function :

f(x)=9x^2+27x+2~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)

We are to find the value of f(2).

To find f(2), we must substitute x = 2 in equation (i).

From equation (i), we get

f(2)\\\\=9\times2^2+27\times2+2\\\\=36+54+2\\\\=92.

Thus, the required value of f(2) is 92.

Option (C) is CORRECT.

Burka [1]3 years ago
3 0
Solution is to substitute 2 for x and u should get 92.
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PLEASE HELP IM SO CONFUSED
levacccp [35]

Answer:

Your answer is 5 weeks!!

Step-by-step explanation:

How I got my answer; First I checked if 2 weeks would work by doing 2( the umber of weeks) *3( the number of inches it grows per week) which is 6, I then added 6 to 3 inches (which is the original height of the plant) and I got 9.

I did the same process with the 2nd plant;

2(the number of weeks) *2( the number of inches the plant grows per week) which is 4. I then added 4 and 8( the original height) and I got 12.

(THE EXPLANATION FOR HOW I GOT 5 WEEKS STARTS HERE)

So I continued to do this process with 2,3,4 and 5, and finally I got my answer at 5weeks.

5(the number of weeks) * 3(the rate the plant grows per week) which is 15inches. I then added 15 to the original height which is 3inches, 15 +3 is 18 inches so that is my answer for how tall the 1st plant would get in 5 weeks .

Now the 2nd plant;

5(the number of weeks) * 2(the rate the plant grows per week) which is 10inches. Now I'm going to add the original height (8) with the rate the 2nd plant would grow after 5 weeks (10), 10+8 is 18 so the plant would grow 18inches after 5 weeks which is the same height as the first plant.

Hope this makes sense :)

5 0
3 years ago
Ms. johnson uses a statistics program to analyze all the data collected by her students during a lab experiment about accelerati
Misha Larkins [42]

Since the variance is the square of the standard deviation, the variance here is 6.3.

A commonly used measure of dispersion is the standard deviation, which is simply the square root of the variance. Therefore, we just raise the standard deviation to the power of 2 to get the answer. We do as follows:

s = √v

(2.5)² = (√v)²

v = 6.25 = 6.3

So, Since the variance is the square of the standard deviation, the variance here is 6.3.

DISCLAIMER: The question was incomplete. Please find the full content below.

Question

Ms. Johnson uses a statistics program to analyze all the data collected by her students during a lab experiment about the acceleration due to gravity. The program reports a mean of 31.5 and a standard deviation of 2.5. What is the variance of the data?

Learn more about VARIANCE here brainly.com/question/15858152

#SPJ4

6 0
2 years ago
Three functions are given below f(x) g(x) and h(x) determine the axis of symmetry for each function show all calculations
ExtremeBDS [4]

Answer:


Step-by-step explanation:

f(x) = -2(x − 4^)2+ 2

The vertex is (4,2)

so the axis of symmetry is  is x=4

g(x) = 5x^2− 10x + 7

       h= -b/2a = 10/2(5) = 10/10 =1

The axis of symmetry is at x=1

h(x)  the axis of symmetry is at x=-2

6 0
3 years ago
There are 40 students at Bali high who play stringed instruments. Of these, 1/4 play viola, 1/5 play cello, and the rest play vi
Rus_ich [418]
22 play violin.
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22!
5 0
3 years ago
Read 2 more answers
Given that we have already tossed a balanced coin ten times and obtained zero heads, what is the probability that we must toss i
defon
A balanced coin will have 50:50 chance of showing either head or tail. In this question, you are asked the probability to find the first head after two tosses. That means the toss result should be:
1. tail   = 1/2 probability
2. head = 1/2 probability

Previously you are tossing the coin 10 times and obtain zero head. But this previous 10 tosses result should not influence your probability in the 11th and 12th toss. The chance will always be 50:50 no matter how much the tosses count. So the probability should be: 1/2 * 1/2= 1/4
7 0
3 years ago
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