1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
torisob [31]
3 years ago
9

John is organizing a local event. He expects the approximate attendance for the event to be modeled by the function a(t) = -16t2

+ 48t + 64, where t is time in hours. Assuming the event ends when there are no attendees, plot the domain to represent the duration of the event. line plot
Mathematics
1 answer:
german3 years ago
8 0

Answer:

the duration of this event is 4 hours

Step-by-step explanation:

This function is a quadratic one

let Δ be the dicriminant :

  • a = -16
  • b = 48
  • c= 64
  • Δ = 48²-4*(-16)*64 = 6400

so there are two values that satisfy -16t²+48t+64 = 0  x and y

  • x= (-48+80)/-16*2 = -1
  • y= (-48-80)/-16*2= 4

x<0 so w won't take it since time is a positive value here

so t = y = 4h

You might be interested in
A grocery store recently sold 48 cans of soup, 12 of which were minestrone soup. Based on experimental probability, how many of
ohaa [14]

Answer:

75% because the ratio is 1:4 so the probability of the next being minestrone is high.

7 0
2 years ago
What does 2 10/19 plus 3 9/12 equal? ​
Dennis_Churaev [7]
It equals 6 21/79 aaaaaaa
7 0
3 years ago
In the standard Normal distribution, which z-score represents the 99th percentile?
nydimaria [60]

The Z- score representing the 99th percentile is given by 2.33

Problems of commonly distributed samples can be solved using the z-score formula.

For a set with a standard deviation, the z-score scale X is provided by:

Z = ( x- mean )/ standard deviation

Z-score measures how many standard deviations are derived from the description. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the scale is less than X, that is, the X percentage. Subtract 1 with p-value, we get the chance that the average value is greater than X.

To Find the z-result corresponding to P99, 99 percent of the normal distribution curve.

This is the Z value where X has a p-value of 0.99. This is between 2.32 and 2.33, so the answer is Z = 2.33

For more information regarding normal distribution, visit brainly.com/question/12691636

#SPJ10

3 0
2 years ago
Find the term to term rules for the following sequences:<br> 2, 6, 18, 54, 162
ki77a [65]
The term rules for the following sequences is that you multiply each number by 3! Hope this helps and please mark brainliest :)
6 0
3 years ago
Read 2 more answers
Evaluate f(4)<br> f(x) = 3x + 4
RSB [31]
The answer is definitely 7xf
7 0
3 years ago
Other questions:
  • Write an equation for the transformation of y = x
    13·1 answer
  • Tiles. Show your work<br>5. X+4= 4​
    15·1 answer
  • Please help me!!! will give brainlists!
    5·1 answer
  • Solve for x: -6 &lt; x-1 &lt;9<br> 05 0-5 0-5 &gt;x&gt; 10<br> O 5 &gt;x&gt;-10
    9·1 answer
  • Solve for x.
    14·2 answers
  • If -2x=4(x+3) what is x
    7·1 answer
  • What are the two values of 16 squared
    9·1 answer
  • Mr. Turner has two Math 2 classes, with one class, he lectured, and the students took notes.
    13·1 answer
  • Find the slope of the line that passes through the points (10,8) and (4,12).
    11·2 answers
  • Enter each answer as a whole number. pls help asap
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!