4. Mr. Downey used the function f(x) = -3x2 + 12x to model the flight of a glider. In Mr. Downey's
functions, x is the amount of time that passes in minutes and f(x) is the glider's distance from the ground in
feet. After how many seconds will the glider reach its maximum distance from the ground?
Answers
Answer: 120 seconds
Step-by-step explanation: In order to find the maximum value of a function, you can take the derivative of the function and equalize the result to 0.
f'(x)=(-3x^2 + 12x)'=-6x+12=0
x=2
When x is 2, the function will reach its maximum value.
f(2)=-3(2)^2 + 12.2 = -12 + 24 = 12
The maximum value (f(x)) is equal to 12 and the time passed is 2 minutes which is equal to 120 seconds.
Answer:
After 2 seconds
Step-by-step explanation:
Here is the screenshot of the parabola that formed from the quadratic equation.
As you can see the maximum point of the parabola reaches 12 feet after 2 seconds.
Also as stated in the question " After how many seconds will the glider reach its maximum distance from the ground?" We are trying to see at how many seconds the glider reaches the maximum point, not how many seconds until it lands.
Thus, the answer would be 2 seconds
Related Questions
Cups by the water cooler are in the shape of a cone. The height is 15 cm and the diameter is 7.6 cm.
What is the volume of one water cooler cup, in cubic centimeters? (Use 3.14 for
π.)
Answers
Answer:
226.7 cm³
Step-by-step explanation:
The cone volume formula is V = (1/3)(base area)(height).
Here that comes out to V = (1/3)(pi)(3.8 cm)^2·15 cm, or 226.7 cm³
Can somebody please help I’ll give Brainliest answer❤️
Answers
Answer:
I believe the answer is 4 inches long
Step-by-step explanation:
CAN SOMEONE PLZ HELP ME?? PLZ DO YOU KNOW ABOUT Coordinate Planes??!! plzzzzzz help
Answers
Answer:
1
Step-by-step explanation:
x is 0
1+0=1
use the area model to explain why 3/4 and 9/1 are equivalent
Answers
Answer:
amongus in real life sus sus
Step-by-step explanation:
Find the area of the parallelogram.
PLEASE HELP!!
Answers
How many 1/4 cup servings of pistachios are in 3 cups of pistachios
Answers
Answer:
12
Step-by-step explanation:
3/1 ÷ 1/4
Answer:
12/4cup servings
Step-by-step explanation:
You can say that 1 cup is 4/4 and you have 1/4 cup serving.
If you want to get 3 cups you can do it like this.
4/4*3=12/4 cup servings
A box contain 10 green pins 3 are blue and 7 are green. Two pins are randomly taken out of the box without replacement work out the probability that both pins are the same color
Answers
Answer:
[tex]P(Z)=\frac{8}{15}[/tex]
Step-by-step explanation:
From the question we are told that:
Sample size [tex]n=10[/tex]
Green pins [tex]x=7[/tex]
Blue pins [tex]y=3[/tex]
Generally the probability of getting two green is mathematically given by
[tex]P(2X)=\frac{7}{10}*\frac{6}{9}[/tex]
[tex]P(2X)=\frac{7}{15}[/tex]
Generally the probability of getting two blue is mathematically given by
[tex]P(2Y)=\frac{3}{10}*\frac{2}{9}[/tex]
[tex]P(2Y)=\frac{1}{15}[/tex]
Therefore the probability that both pins are the same color P(Z)
[tex]P(Z)=P(2Y)+P(2X)\\P(Z)=\frac{7}{15}+\frac{1}{15}[/tex]
[tex]P(Z)=\frac{8}{15}[/tex]
Solve b+12≤26. Graph the solution
Answers
Answer:
The answer is
b≤14
So you make a filled in circle at 14, make the point for left from there.
Which of the following shapes describes the 2d figure formed by slicing parallel to the base of a triangular prism
a. rectangle
b. triangle
c. square.
d.trapizoid
Answers
Answer:
c. square.
Step-by-step explanation:
squares have 4 parallel sides so if you cut it in half you will still be parallel
The 2D figure formed by slicing parallel to the base of a triangular prism is option B. Triangle.
What is a Triangular Prism?Triangular prism is the three dimensional figure which consists of two triangular shaped bases and three rectangular lateral faces.
WE have to find the 2d figure formed by slicing parallel to the base of a triangular prism.
We know that base of a triangular prism is triangle.
So, when we slice a parallel plane to the base of the triangular prism, the resulting 2D shape will also be a triangle.
Hence the 2D shape formed by slicing parallel to the base of a triangular prism is triangle.
To learn more about Triangular Prism, click on the link given below :
https://brainly.com/question/10354948
#SPJ3
Find dy/dx in the following
1) y=x^[10] +10^[x] +e^[x]
2) y=㏒ x +e^[x]+√x - 1/x
Answers
1. in picture 1
2. in picture 2
Hope this helps :T
Also I am not so shure about 2, but I am 98% shure 1 is right.
Reggie wants to save $86.10. He plans to save $10.25 each month.
For how many months does Reggie need to save?
0.80 months
0.84 months
8.00 months
8.40 months
Answers
Answer:
86.10/10.25= 8.4
The answer is the 4th one
Step-by-step explanation:
= 8.4
So answer will be 8.40 months
Guys pls help me!!!!
Answers
Answer: D
Step-by-step explanation:
There is no points I plotted them on a graph and they don't intercept on the graph
helppp helping my sister
Answers
5 weeks 4 days -3 weeks 6 days. _____________
Answers
Answer:
1 week 8 days
that's the pattern
subtract 2 weeks add 2 days
brainliest would be nice
have a nice day
Step-by-step explanation:
Answer:
8 weeks
Step-by-step explanation:
a function f(x) has x intercepts of -3 and -5. what is thr constant term in the function? f(x)= x²+8x+___
Answers
Answer:
15
Step-by-step explanation:
(x+3)(x+5)=0
x^2+8x+15=0
Eric and pam are paid $48.75 for their work. Eric worked 2.5 hours, and pam worked 4 hours. They split the money according to the amount of time each of them worked. How much is erics's share of the money? Explain.
Answers
Answer:
$18.75
Step-by-step explanation:
Determine the total hours worked by both individuals = 2.5 + 4 = 6.5 hours
Determine the fraction of hours that Eric worked = 2.5/6.5 = 0.384615
Multiply this fraction by the total amount earned = 0.384615 x $48.75 = $18.75
I need help asap
Jane had $5.00, then spent $3.00. After one week she had earned 12 more dollars, but spent half of the total money she has. How much money does she have left?
also Can someone also please teach me how to make music using this website;
https://musiclab.chromeexperiments.com/Shared-Piano/#J_lgLdlzn
Answers
Answer:
$7.00
Step-by-step explanation:
5-3=2
2+12=14
14/2=7
Jane has 7 dollars left.
Please help me? I am confused.
Answers
Answer:
-5
Step-by-step explanation:
You are trying to find the cube root of a number. Because the number is being multiplied by itself 3 times over, only a negative number could be a cube root of another negative number
Can someone help me on a essay (how do you use math outside of school)?
Answers
Answer:
Step-by-step explanation:
Im not going to write the entire essay but here's some ideas for every paragraph. Like the main ideas.
(introduction explain why people should read this essay)
(paragraph 1) Explain different jobs that use math daily and why these jobs are essential.
(paragraph 2) Math can help in social situations. For example, If someone asks you for the time and you don't know how to tell time.
(paragraph 3) Mathematics makes our life orderly and prevents chaos. Certain qualities that are nurtured by mathematics are power of reasoning, creativity, abstract or spatial thinking, critical thinking, problem-solving ability and even effective communication skills.
(conclusion) Reinstate your main idea and purpose of the essay.
Hope this helps you organize your thoughts!
OK you look like your going through a tuff time, the cold harden truth is that you have no choice but to live with it. Listen closely life is not all about being with somebody you have to work hard for your goals. God gave you a road to walk down, Not for somebody else to walk down with you therefore YOU walk down that road and that road has alot of choices all the way to a through z.. You choice your choices in life no buddy else. Its all on you. somebody wants to break up with you then let it be THEY walked out the door before the party had started not you. You live your own life and dont let anybody tell you other wise. Have a good day its you choice not anybody elses be wise with you choices tho it will effect your future and ppl around you. (:
Im finna get band after this lol
Answers
Answer:
ok
Step-by-step explanation:
Please answer correctly
Answers
FCD=50º
hope this helps!!
5(22–3)-3(x+4),
Which expression is the simplest form of
9
A.
72-3
9
72-27
B.
C.
132-27
9
D. 72 – 3
Answers
Answer:
342
Step-by-step expl\
5335=454
Pls can someone help me‼️‼️‼️‼️
and I don’t want files.
Answers
Answer:
135
Step-by-step explanation:
a line always has a degree of 180 so u just subtract 45 from 180 and get 135
m ∠LNM = 135°
Step-by-step explanation:
45° + 3x = 180°
3x = 180° - 45°
3x = 135°
What’s another name for line qr
Answers
rq
The order of the letters does not matter when referring to just a line
What is the mode of the following numbers?
3,7, 5, 2, 5, 5, 2,5
Answers
The mode is 5.ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ
Answer:
The mode is 5, hope this helps!
-59_________-60
<
>
=
Answers
Answer:
>
Step-by-step explanation:
-59 is bigger than -60. If you think about it on a number line, it is bigger.
By the way, can you follow me on Brainly?
Thanks!
Answer:
-59 > -60
Step-by-step explanation:
in negatives, the less the number is, the more it is.(kind of confusing)
Charlotte has $37. She wants to buy a ski pass for $125. She can earn $8 per hour at her summer job.
- Enter an inequality that represents the number of hours (h) Charlotte could work to earn at least enough money to buy the ski pass.
Answers
Answer:
8h + 37 = 125
Step-by-step explanation:
if she already has 37, you can take 37 from 125. you should have 88 left.
if you do the math, 8 x 11 is 88. so she needs to work 11 hours to be able to pay for the ski pass.
If a basketball player makes 9 baskets in 12 tries, what is her ratio of baskets to tries, in lowest terms?
Answers
Answer:
3:4
Step-by-step explanation:
9:12
divide both by 3 to get
3:4
Answer:
3 : 4
Step-by-step explanation:
9 : 12
divide each side by three
3 : 4
PLEASE HELP ASAPPPP!!!!!!!
here is a screenshot of the math problem
Answers
pls im stuck and i really need help
Answers
There is website called symbolab to help , or desmos
