Answer:
n^3-4n^2+5
Step-by-step explanation:
The path of a breaching ocra whale can be modeled by the function k(x) = x^2 - 2x - 8, where x is the time elapsed in seconds under water, and k(x) is the height in ft below the water.
Determine HOW LONG is the ocra (killer) whale underwater to the nearest second. MUST BE SOLVED ALGEBRAICALLY!
Answer:
The time duration of the ocra whale spends under water is 4 seconds
Step-by-step explanation:
The equation that model the path of the ocra whale is presented as follows;
k(x) = x² - 2·x - 8
Where;
x = The time elapsed in seconds under water
k(x) = The height in feet below water
Therefore, the point where the ocra whale enters the water, k(x) = 0
At the point of submerging below the water surface, we have;
k(x) = 0 = x² - 2·x - 8
Factorizing the quadratic equation gives;
0 = x² - 2·x - 8 = (x - 4)·(x + 2)
Therefore, when k(x) = 0, either;
(x - 4) = 0, which gives, x = 4
(x + 2) = 0, which gives, x = -2
Given that 'x' represent the time, the time elapsed while the whale is under water, x = 4 seconds
100 POINTS IF YOU GET IT RIGHT
Use the Rational Root Theorem to list all possible rational roots of the polynomial equation
x^3 – 5x^2 - 4x + 8 = 0. Do not find the actual roots.
The person above this should have the answer. It seems like nobody else is answering.
Find x and the y intercepts of the photo
help me with this math question
Answer:
x= 44.1
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
sin theta = opp / hypotenuse
sin 27 = 20/x
x sin 27 = 20
x = 20 / sin 27
x= 44.05378529
Rounding to the nearest tenth
x= 44.1
Find the average rate of change of
Answer:
Rate of change = - 4
Step-by-step explanation:
[tex]h(x) = -x^2 + 3x + 1 \\\\h(2) = -(2)^2 + (3 \times 2) + 1 = - 4 + 6 + 1 = 3\\h(5) = - (5)^2 + ( 3 \times 5) + 1 = - 25 + 15 + 1 = -9\\[/tex]
Rate of change :
[tex]= \frac{h(2) - h(5)}{2-5} = \frac{3-(-9)}{2-5} = \frac{3+9}{-3} = - \frac{12}{3} = -4[/tex]
4) PLEASE HELP Ray wants to buy a computer game that is originally priced at $38.50. The
store is having a 20% off sale. Ray also uses a coupon to receive an
additional 15% off the price of the game. The sales tax rate is 7%. What is
the cost of the game, to the nearest cent? Show your work. [2 points)
.
Determine the sale price of the computer game.
.
Determine the cost of the game based including the sales tax based on the
discounted price.
Answer:
$32.96
Step-by-step explanation:
38.50 (20%) + 7.70
38.50 - 7.70 = 30.80
:Before tax:
$30.80
30.80(7%) = $2.16
30.80 + 2.16 = 32.96
:Total after tax:
$32.96
need this solved for geometry ! thanks !
PLS HELP! WILL GIVE BRAINLIEST
Answer: do 2.1 times 100 than that answer times 0.6
Step-by-step explanation:
what would be the equation for this graph? (WILL GIVE BRAINLEIST!)
Answer:
y = (x - 2)² - 9 Vertex form
y = x² - 4x - 5 Standard form
Step-by-step explanation:
vertex = (h, k) = (2, -9)
Vertex form
y = a(x - h)² + k
y = a(x - 2)² - 9
find "a" using point (5, 0)
0 = a(5 - 2)² - 9
0 = a(3)² - 9
0 = 9a - 9
9 = 9a
a = 1
y = (x - 2)² - 9
Standard form
y = (x² - 4x + 4) - 9
y = x² - 4x - 5
Determine the location and values of the absolute maximumu and minimum for given function f(x)=(-x+2)^4 minimum
Answer:
for a function f(x), the maximum is defined as:
f(x₀), such that:
f(x₀) ≥ f(x) for all values of x.
and a minimum is defined as:
f(xₐ), such that:
f(xₐ) ≤ f(x) for all values of x.
In this case, we have the function:
f(x) = (-x + 2)^4
The first thing you should see is that the exponent is even, then f(x) is always equal or larger than zero.
Then the smaller value that f(x) can take is zero, and this happens when the argument inside the parentheses is equal to zero:
-x + 2 = 0
2 = x
so the minimum is:
f(2) = (-2 + 2)^4 = 0
For any value different than x = 2, f(x) is larger than zero.
Now, we can also see that, as x increases, f(x) also does increase (if we graph the equations we could see that the graph extends infinitely upwards) then this function does not have an upper limit, thus, the function has not a maximum.
Question on image. (6)
will report answers out of question. Thank you
Answer:
the answer is 6 i think
Step-by-step explanation:
Answer:
XW=5
Step-by-step explanation:
WY is congruent with ZW, so WY=12
XY is the radius, so XY=13
Since this is a right triangle, you use Pythagorean therom to solve for XW.
a²+b²=c²12²+x²=13²144+ x²=169x²=25x=5XW=5Find the value of x.
PLEASE HELP ASAP!! I RLLY NEED IT NOW THANK YOU
EXPLANATION = BRAINLIEST
The radius of a circle is 4 meters. What is the area of a sector bounded by a 135° arc?
Margie drew the following figureHow can margie find the length of CD
Answer:
12
Step-by-step explanation:
Answer:
12............................
Step-by-step explanation:
The graph of y = f(x) is the solid black graph below. Which function represents the
dotted graph?
Submit
Answer
Submit Answer
y = f(x + 2) +1
y= f(x - 2) - 1
y = f(x + 2) - 1
y = f(x - 2) +1
Answer:
Step-by-step explanation:
y = f(x + 2) +1
wuch equation represents O AB OB. re
Answer:
The answer that is C
Step-by-step explanation:
The equation would be y=1/2x + 8 because the line touches the y-intercept at +8. The others would be incorrect as the line does not increase by a slop of 8/1 and/or is the y-intercept at -8.
Help Please!!!!!!!!!!
Step-by-step explanation:
Area = πr²
2) 11² x 3.14 = 379.94
3) 3² x 3.14 = 28.26
4) 5² x 3.14 = 78.5
5) 6.5² x 3.14 = 132.665
6) 7.2² x 3.14= 162.7776
Mrs. Chin paid a 20 percent tip on the bill for lunch. Percents Total 20% 20% 20% 20% 20% 100% $2.75 $2.75 $2.75 $2.75 $2.75 If the tip amount was $2.75, what was the bill for lunch before the tip was added to it?
Answer: $13.75
Step-by-step explanation:
Since Mrs. Chin paid a 20 percent tip on the bill for lunch and the tip amount was $2.75, then the bill for lunch before the tip was added to it will be calculated thus:
Let the bill for lunch be represented by x. Therefore,
20% of x = $2.75
20/100 × x = $2.75
0.2 × x = $2.75
0.2x = $2.75
x = $2.75/0.2
x = $13.75
Therefore, the bill is $13.75 before the too was added.
A Group of students is tracking a friend, John, who is riding a Ferris
wheel. They know that John reaches the Maximum height of 11 m at
10 seconds and then reaches the minimum height of 1 m at 55 seconds.
What is the amplitude of the function and what does it represent in this situation?
Answer:
Part A
5 m
Part B
The maximum displacement of the Ferris wheel from the midline
Step-by-step explanation:
Part A
The amplitude is the largest displacement of a body, moving in an oscillatory, or vibrational motion from its position of equilibrium or central position about which the body vibrates
In the Ferris wheel, the central position is the midline, between the maximum height and the minimum height
Therefore, the amplitude is the maximum displacement from the midline = The maximum height - ((The maximum height - The minimum height)/2 + The minimum height)
∴ The amplitude = 11 m - ((11 m - 1 m)/2) + 1 m) = 5 m
Part B
The amplitude represents the maximum and minimum distances the Ferris wheel moves above the midline.
Ramon drew boxplots to summarize the number of pages in each chapter of two books. The values of the interquartile ranges for these boxplots are the same. Which boxplot could represent this data?
Answer
look at the ss i sent to see the answer
Step-by-step explanation:
What is the noun of press?
the noun press itself is already a noun. though the word can also be expressed as a verb, (for example: he pressed his face against the glass) it can also be a noun (for example: the incident was not reported to the press).
hope this helps. :)
have a great day! stay safe, happy, and healthy!
Casey has a job doing valet parking. Casey makes an hourly rate of $4.55 per hour plus tips. Last week Casey worked 26 hours and made $898.55. How much in tips did Casey earn last week?
a.
$34.56
b.
$118.30
c.
$157.25
d.
$780.25
Answer:
D
Step-by-step explanation:
4.55*26 = $118.30 <- This is how much she made from work
898.55-118.30 =780.25 <- how much she made from tips
americaamerica america
Answer:
sweet home america
Step-by-step explanation:
What is the solution to the system of equations?
4x + 2y = 1
5x = y - 18
what is 200x+344=3244x45321
Answer:
7306649. 9
Step-by-step explanation:
Answer:
x=735104.9
Step-by-step explanation:
200x+344=3244×45321
200x+344=147021324
200x=147021324–344
200x=147020980
x=147020980÷200
x=735104.9
Can someone pls help me solve this?
Answer:
Step-by-step explanation:
The formula for finding area is [tex]\pi[/tex]r2, and since half of diameter is radius, we'll need to divide the diameters given by 2. So the formula will be A = π (d/2)2.
Answer:
13π
Step-by-step explanation:
A(Circle) = πr²
r = d/2
A(Large) = π(7)² = 49π
A(Medium) = π(6)² = 36π
Therefore, the area of a large pizza is 13π greater than the area of a medium pizza.
The measures of the angles of a triangle are shown in the figure below. Solve for x.
Step-by-step explanation:
Write what you knkw
all triangles' angles add to 180
180 =x + (106 + 48) solve for x
6. (07.09)
Given the functions m(x) = 4x - 11 and n(x) = x - 10, solve m[n(x)] and select the correct answer below. (2 points)
Answer:
4x -51
Step-by-step explanation:
m(x) = 4x - 11
n(x) = x - 10
m[n(x)] = Replace n(x) for x in the function m(x)
= 4 (x-10) - 11
= 4x - 40 -11
= 4x -51
please help 40 points
Answer:
-2 5/9
Step-by-step explanation:
w + (-x) - 2/3
Let w = -5/9 and x = 4/3
-5/9 - 4/3 - 2/3
Get a common denominator
-5/9 -4/3*3/3 -2/3*3/3
-5/9 -12/9 -6/9
Add
-23/9
Change to a mixed number
-2 5/9
9.
Which statement about this figure is true?
Answer:
The answer should be
• It has no rotational symmetry.
Step-by-step explanation:
A rotational symmetry is when the object still looks the same after some rotation.
I hope this helped :)
