Answer:
20
Step-by-step explanation:
since al = lb because it is midsegment and lb = 20 so AL = 20
Given the function, f(x) = 3x4- 7x3 - 6x2+ 12x + 8
a) Determine the number of turning points.
b) Describe the End Behavior
c) List the potential (possible) real zeros.
d) Use Descartes' Rule of Signs to determine the number of positive real zeros and number ofnegative real zeros.
e) Find all rational zeros.f) Graph the function.Make sure that you label each category.
a) The number of turning points of the function is 3.
b) The end behavior of the function is that as x approaches positive infinity.
c) The potential real zeros of the function are the factors of the constant term, 8. These are ±1, ±2, ±4, and ±8.
d) Using Descartes' Rule of Signs, there are 3 sign changes in the polynomial, so there can be 3 or 1 positive real zeros.
e) Using synthetic division and the potential real zeros, we can find that the rational zeros are -2 and 4.
f) The graph of the function is shown below with the turning points and zeros labeled.
The number of turning points of the function is 3. because the degree of the polynomial is 4 and the number of turning points is one less than the degree.
f(x) approaches positive infinity and as x approaches negative infinity, f(x) approaches negative infinity. This is because the leading coefficient is positive and the degree is even.
There are 2 sign changes in the polynomial with the x values replaced with -x, so there can be 2 or 0 negative real zeros.
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Consider an activity with these estimates for optimistic, most likely, and pessimistic time: 11, 21, 35 . Find the mean value of the activity time. (Please provide answer accurate to two decimal place
the main answer is that the mean value of the activity time is 21.67. This is calculated using the formula (optimistic + 4 * most likely + pessimistic) / 6.
To find the mean value of the activity time, we can use the three estimates provided: optimistic, most likely, and pessimistic time.
1. The optimistic time is the shortest possible time for completing the activity, which is 11 units.
2. The most likely time is the time that is most likely to be taken to complete the activity, which is 21 units.
3. The pessimistic time is the longest possible time for completing the activity, which is 35 units.
To calculate the mean value, we can use the following formula:
Mean value = (optimistic + 4 * most likely + pessimistic) / 6
Substituting the given values, we get:
Mean value = (11 + 4 * 21 + 35) / 6
Calculating the numerator first:
11 + 4 * 21 + 35 = 11 + 84 + 35 = 130
Now, we can calculate the mean value:
Mean value = 130 / 6
Dividing 130 by 6, we get:
Mean value = 21.67 (rounded to two decimal places)
Therefore, the mean value of the activity time is 21.67.
the main answer is that the mean value of the activity time is 21.67. This is calculated using the formula (optimistic + 4 * most likely + pessimistic) / 6.
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For which pair of triangles would you use sas to prove the congruence of the 2 triangles?.
Triangles are said to be congruent if two of their sides and the included angle are the same as their corresponding sides and angles of another triangle.
what is SAS ?When determining if a set of triangles is congruent, the Side-Angle-Side rule is utilized. According to the SAS rule, triangles are congruent if their two sides and included angles are the same as those of another triangle.
If two sides and an included angle of one triangle are equal to the sides and an included angle of the second triangle .
Then two triangles are said to be congruent according to the SAS. According to SAS theorem of congruence, two triangles are congruent if the corresponding two sides and their included angles in one triangle .
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$36000. For every year after it is purchased, the car loses 17% of its value due to depreciation. What is the value of the car after 64 months? find in exponential function grade 11 math
Answer:
$13,320Step-by-step explanation:
The expression for depreciation is
V=C(1-r)^t ,
where V is the value of the car after t years,
C is the original cost, and
r the rate of depreciation. If a car
given
C=$36000
r=17%= 0.17
t in years 64/12= 5.33years
Substituting to the formula we have
V=36000(1-0.17)^5.33
V=36000(0.83)^5.33
V=36000*0.370
V=13,320
the value will be $13,320
100 POINTS!! ANSWER CORRECT
The information in the table shows the average weekly temperatures in degrees Fahrenheit of four cities.
Which city’s data set is bimodal?
A. City A
B. City B
C. City C
D. City D
Answer:
City B
Step-by-step explanation:
Because it is the only one that makes sense.
How much can 2 go into 80
Answer:
40
Step-by-step explanation:
80/2= 40
HELP ME PLEASE ASAP I HAVE TO GET THIS DONE TODAY OR ILL FAIL
Answer:
(1,-8)
Step-by-step explanation:
this is be because a rectangle is parralel so opposite ends will have equal sides, if you were to graph this, there would be a missing point in the spot (1,-8).
Answer:
(1,-8)
Step-by-step explanation:
Each of the set of points; (-7,8) and (-7,-8) is reflecting over either the x or y-axis. So therefore the second set of points would be (1,8) and (1,-8).
In terms of relative growth rate, what is the defining property of exponential growth?
In terms of relative growth rate Exponential growth is characterized by a constant relative growth rate.
Exponential growth is the process of increasing quantity over time. Occurs when the instantaneous rate of change of a quantity over time is proportional to the quantity itself. The exponential growth model has the form
y (t) = C eᵏᵗ, where k is the rate constant.
Relative Growth Rate:Relative growth rate (RGR) is the rate of growth relative to size. That is, the rate of growth per unit time relative to the size at that point in time and y'(t)/y(t) is the relative growth rate of a function y at time t.
1/y dy/dt = 1/y d(C eᵏᵗ)/dt
= 1/y(kC eᵏᵗ)
= 1/y ( ky) ( since, y (t) = C eᵏᵗ)
= k
Therefore a constant relative growth rate.
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Complete question:
In terms of relative growth rate, what is the defining property of exponential growth? Choose the correct answer below.
A. The relative growth rate at time t is the slope of the exponential function at time t.
B. dy dt If y represents a population, then the relative growth rate can be represented by dy/dt
C. The relative growth rate is proportional to the size of the population
D. The relative growth rate is constant.
How to write 103,727,495
Answer:
One hundred three million seven hundred twenty-seven thousand four hundred and ninety-five
Step-by-step explanation:
103,000,000 = One hundred three million
103,727,000 = One hundred three million seven hundred twenty-seven thousand
103,727,495 = One hundred three million seven hundred twenty-seven thousand four hundred and ninety-five
I hope this answer helps you! (I also hope I understood your answer properly and got the answer that you needed :D)
A company wants to learn about the number of its employees who visit the dentist for regular checkups. Which type of study will best help the company discover this information?
census
survey sample
observational study
experiment
Answer:
A. Census
Step-by-step explanation:
You would simply ask ALL of the employees at your workplace as to whether or not they visit the dentist for regular check-ups. Thus, it is a census.
The type of study which will be the best help the company discover this information is survey sample, the correct option is B
What is the sample space for a random experiment?Sample space is the set of all possible outcome the considered random experiment can result to.
Thus, suppose we toss a coin, then tossing a coin is a random experiment, and the sample space is {'head', 'tail'}. We ignore other outcomes like slant coin, or standing coin by assuming that coin is very thin to stand and always falls down.
We are given that;
The number of its employees who go to the dentist.
Now,
A census involves collecting data from every individual in a population, which can be time-consuming, expensive, and may not be feasible for a large company with a large number of employees.
An observational study involves observing individuals and collecting data without intervening or manipulating any variables. This type of study may not provide information about the number of employees who visit the dentist for regular checkups since it does not involve asking individuals directly about their behavior.
An experiment involves manipulating one or more variables to observe the effect on another variable. This type of study may not be appropriate for studying employee behavior related to dentist visits since it may not be ethical or practical to manipulate employees' behavior in this way.
A survey sample, on the other hand, involves selecting a subset of employees and asking them directly about their behavior related to dentist visits. This can be an effective and efficient way to gather information about the number of employees who visit the dentist for regular checkups.
Therefore, by sample space the answer will be survey sample.
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Convert the following to scientific notation: 5050
Answer:
5.05*10³
Step-by-step explanation:
Put the decimal after the first digit and drop the zeroes. To find the exponent count the number of places from the decimal to the end of the number.5050 = 5.05 *1000 = 5.05*10³Use completing the square to transform this equation into vertex form. Please state the coordinate of the vertex. X^2-8x-19=0
Answer:
(4 , - 35)
Step-by-step explanation:
X²-8x-19 =(x-4)² -35
y = a (x-h)² + k a=1 , (h , k) -> (4 , - 35)
a 20-foot ladder is leaning against a building in order to reach the roof. the foot of the ladder is 6 feet from the building. how tall is the building?
The building is 19.078 feet tall.
Given:
A 20-foot ladder is leaning against a building in order to reach the roof. the foot of the ladder is 6 feet from the building.
Let x be the building height.
here it forms a right angled triangle,
ladder length (hypotenuse) = 20 feet.
base length = 6 feet
According to pythagorean theorem,
\(hypotenuse^{2} = side^{2} +side^{2}\)
\(20^{2} =6^{2} +x^{2}\)
400 = 36 + \(x^{2}\)
\(x^{2}\) = 400 - 36
\(x^{2}\) = 364
x = \(\sqrt{364}\)
x = 19.078 feet.
Therefore the height of the building is 19.078 feet.
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Find all the solutions of each equation by factoring. x³-5x²=36 x .
According to the question, the solutions to the equation by factoring x³ - 5x² = 36x are x = 0, x = 9, and x = -4.
The equation to solve is x³ - 5x² = 36x.
To find the solutions, we can rearrange the equation and set it equal to zero:
x³ - 5x² - 36x
= 0.
Next, we factor out the common factor x:
x(x² - 5x - 36)
= 0.
Now, we need to factor the quadratic expression inside the parentheses, x² - 5x - 36. We are looking for two numbers that multiply to -36 and add up to -5. These numbers are -9 and 4.
Therefore, we can rewrite the equation as:
x(x - 9)(x + 4)
= 0.
Setting each factor equal to zero, we have:
x = 0, x - 9 = 0, x + 4 = 0.
Solving these equations, we find:
x = 0, x = 9, x = -4.
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If a car travels 400 meters in 20 seconds how fast is it going?
0.05 meters per second
20 meters per second
800 meters per second
Answer:
B. 20 meters per second
Step-by-step explanation:
The car is going 400 meters in 20 seconds, let's simplify that!
STEP 1
400/20=20
( / stands for division)
For an easier understanding way, here:
There will be a picture attached to this answer, look at that for understanding better!
STEP 2
Now, to understand a bit better, the 400 gets divided into 20 by 20 times, and the 20 gets divided into 20 1 time. So, there fore.....
FINAL ANSWER:
We get the answer that if a car is moving 400 meters per 20 seconds, that means it is moving 20 meters per one second.
Thank You! Please Mark me Brainliest!
Have a great day studying!
A+number+is+stored+in+cell+c24.+in+cell+d24,+you+wish+to+calculate+5%+of+the+number+stored+in+cell+c24.+to+accomplish+this,+what+formula+should+be+entered+in+cell+d24?
Answer:
just put out + from the question.
Given functions \( g(x)=\frac{1}{\sqrt{x}} \) and \( p(x)=x^{2}-4 \), state the domains of the following functions using interval notation. Domain of \( \frac{g(x)}{p(x)} \) : Domain of \( g(p(x)) \)
Given functions \(g(x)=1/√x and p(x)=x^2 - 4,\) to state the domains of the following functions using interval notation:
\(Domain of g(x)/p(x) and Domain of g(p(x)).\)
Domain of g(x)/p(x):
We have to find the domain of the function g(x)/p(x).
For that, we need to consider the following points:
If
x = 0,
the denominator becomes zero and the function is undefined.
x ≠ 0.
The value under the square root in g(x) cannot be negative.
Hence,
x > 0.
Hence,
\(x^2 - 4 ≥ 0 ⇒ x^2 ≥ 4 ⇒ x ≤ −2 or x ≥ 2\)
the domain of g(p(x)) is.
\([−∞, −2] ∪ [2, ∞).\)
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Select the correct comparison
Answer:
pretty sure its d
Step-by-step explanation:
Because a has spread out dots and b has them all towered and neat so d
Answer:
D.)
Step-by-step explanation:
3х – 2y = 27
=
3х -
у = 24
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
3*x-2*y-(27)=0
STEP1:
Equation of a Straight Line
1.1 Solve 3x-2y-27 = 0
Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).
"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.
In this formula :
y tells us how far up the line goes
x tells us how far along
m is the Slope or Gradient i.e. how steep the line is
b is the Y-intercept i.e. where the line crosses the Y axis
The X and Y intercepts and the Slope are called the line properties. We shall now graph the line 3x-2y-27 = 0 and calculate its properties
Calculate the Y-Intercept :
Notice that when x = 0 the value of y is 27/-2 so this line "cuts" the y axis at y=-13.50000
y-intercept = 27/-2 = -13.50000
Calculate the X-Intercept :
When y = 0 the value of x is 9/1 Our line therefore "cuts" the x axis at x= 9.00000
x-intercept = 27/3 = 9
Calculate the Slope :
Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is -13.500 and for x=2.000, the value of y is -10.500. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of -10.500 - (-13.500) = 3.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)
Slope = 3.000/2.000 = 1.500
Geometric figure: Straight Line
Slope = 3.000/2.000 = 1.500 x-intercept = 27/3 = 9 y-intercept = 27/-2 = -13.50000Sketch the D indicated and integrate f(x, y) over D using polar coordinates. f(x, y) = 2xy; x ge 0, y ge 0, x2 +y2 le 25 Answer:
From the polar coordinates, the integrate value of f(x,y), f( x,y) = 2xy ; x,y ≥ 0, x² + y² = 25 over D using polar coordinates is equals to the \( \frac{625}{4}\). The sketch of D is in attached figure.
The equation of a circumference in rectangular coordinates and origin as centre is x² +y² =R² , where R is the radius of the circumference. In polar coordinates, x² + y² = ρ, ρ is the polar radius. We have function f( x,y) = 2xy ; x,y ≥ 0, x² + y² = 25. It is an equation of a circle with radius 5 centered at the origin, however, since x and y must both be greater than or equal to 0, the region D is restricted to the portion of the circle in the first quadrant. So, the sketch of D is present in attached figure.
Now, we convert the cylindrical coordinates, r will span from 0 to 5 and θ will span from 0 to π/2. The integrand, f(x,y) = 2xy then f(r, θ) = 2(r sin(θ))(r cos(θ)) = 2r²sin(θ)cos(θ) = r²sin(2θ) and the double integral is \(\int_{0}^{\frac{π}{2}}\int_{0}^{5} r³sin(2θ)drdθ\)
\(= \int_{0}^{\frac{π}{2}}[\frac{ r⁴}{4}sin(2θ)]_{0}^{5}dθ\)
\(= \int_{0}^{\frac{π}{2}}[\frac{5⁴}{4}sin(2θ)]dθ\)
\(= \frac{5⁴}{4}[\frac{ -cos(2θ)}{2}]_{0}^{\frac{π}{2}}\)
\(= -\frac{5⁴}{8}[ cos(π) - cos(0°)]\)
\(= - \frac{5⁴}{8}[ -1 - 1 ]\)
\(= \frac{625}{4}\)
Hence, required value is \( \frac{625}{4}\).
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what is the value of the expression?
Answer:
Undefined
Step-by-step explanation:
As you try to evaluate the expression, the denominator shows a proplem.-3+3 is equal to 0. So the expression is 2/0. The problem is, dividing anything by zero is undefined. This means that the entire expression is undefined.
the length of a rectangle is 4 feet more than its width. The area of the rectangle is 60ft^2. Find the length and width of the rectangle.
Answer:
10 and 6
Step-by-step explanation:
Let A be the area of the rectangle, w the width and L the length
● A = w*L
The length is 4 feet more that the width so L = w+4
● A = w ×(w+4)
● A = w^2 + 4w
The area is 60 ft^2
● w^2 + 4w = 60
Substract 60 from both sides
● w^2 + 4w - 60 = 0
This a quadratic equation
We will solve it by graphing it
The solution are 6 and -10 since the graph intersect with the x-axis in those points (pictures below)
The width is 6 feet long since it is a distance and a distance is always positive.
● w = 6
● L = w + 4
● L = 6 + 4
● L = 10
The width is 6 feet and the length is 10 feet
Out of her 5 gigabyte data plan, Debbie has used 37%. How much data does she have left?
jawkfjrnsidbjekwbxk2jw dlf 2kqbdkkebakdnrk8w Fflint
Answer:
740%
Step-by-step explanation:
. A sequence starts with 180, 120, …. If the sequence is arithmetic, create a recursive and explicit formula for the sequence. If the sequence is geometric, create a recursive and explicit formula for the sequence.
Answer:
Arithmetic Sequence
\(T_n = 240-60n\) ---- Explicit
\(T_n = T_{n-1} - 60\) --- Recursive
Geometric Sequence
\(T_n = 270* (\frac{2}{3})^n\) ---- Explicit
\(T_n = T_{n-1} * \frac{2}{3}\) ---- Recursive
Step-by-step explanation:
Given
\(180, 120,....\)
(a) Assume it is an arithmetic sequence
The explicit formula is calculated using:
\(T_n = a + (n - 1)d\)
Where
\(a = 180\)
\(d = 120 - 180\)
\(d = -60\)
So, we have:
\(T_n = 180 + (n - 1)*-60\)
\(T_n = 180 -60n + 60\)
Rewrite
\(T_n = 180 + 60-60n\)
\(T_n = 240-60n\)
The recursive function is calculated using:
\(T_1 = 180\)
\(T_2 = 120 = 180 - 60 = T_1 - 60\)
\(T_3 = 60 = 120 - 60 = T_2 -60\)
-
\(T_n = T_{n-1} - 60\)
(b) Assume it is a geometric sequence
The explicit formula is calculated using:
\(T_n = ar^{n-1}\)
Where
\(a = 180\)
\(r = \frac{120}{180}\)
\(r = \frac{2}{3}\)
So, we have:
\(T_n = 180 * (\frac{2}{3})^{n-1}\)
Split
\(T_n = 180 * (\frac{2}{3})^n \div (\frac{2}{3})^1\)
\(T_n = 180 * (\frac{2}{3})^n \div (\frac{2}{3})\)
Rewrite as:
\(T_n = 180 * (\frac{2}{3})^n * (\frac{3}{2})\)
\(T_n = 180 * (\frac{3}{2})* (\frac{2}{3})^n\)
\(T_n = 180 * \frac{3}{2}* (\frac{2}{3})^n\)
\(T_n = 90 * 3* (\frac{2}{3})^n\)
\(T_n = 270* (\frac{2}{3})^n\)
The recursive function is calculated using:
\(T_1 = 180\)
\(T_2 = 120 = 180 * \frac{2}{3} = T_1 * \frac{2}{3}\)
\(T_3 = 80 = 120 * \frac{2}{3} = T_2 * \frac{2}{3}\)
-
\(T_n = T_{n-1} * \frac{2}{3}\)
I need help plsssssss ;-;
1) Factorize. 2a² - 8
2)Among the sets, P = {3,4,5,6} , Q = {0,1,2,3} , R = {5,6,7,8,9}
i) write a pair of disjoint sets
ii)name a pair of equivalent sets
3) Out of the students in the class, 3/7 are girls. If there are 24 boys in the class, find the total number of students in the class.
Answer:
2(a\( 2(a^2-4)\)Which of the following is theGiven the equation 2square root of x minus 5 = 2, solve for x and identify if it is an extraneous solution. radical expression of a to the five sevenths power?
Find the height of a triangle if the area is 42 square units and the base is 7 units.
Answer:
your answer is 12
Step-by-step explanation:
Base 7 Area 42
Using the formula
A= hb over 2
Solving for hb
hb=2A
b=2·42
7=12
hope this is not to confusing but the answer is 12.
Help Me Please. Explain if possible, I just don't understand.
The Point class represents x,y coordinates in a Cartesian plane. Which line of code appears completes this operator which transforms a Point by dx and dy? (Members written inline for this problem.) class Point { int x_{0}, y_{0};public: Point(int x, int y): x_{x}, y_{y} {} int x() const { return x_; } int y() const { return y_; }};Point operator+(int dx, int dy) { return _________________________;}
The correct line of code that completes this operator which transforms a Point by dx and dy is shown below: Point operator+(int dx, int dy) { return Point(x_+dx,y_+dy);}Note that the function operator+ takes two arguments: an integer dx and an integer dy.
The function returns a point, which is created by adding dx to x and dy to y.The completed code is shown below:class Point { int x_{0}, y_{0};public: Point(int x, int y): x_{x}, y_{y} {} int x() const { return x_; } int y() const { return y_; }};Point operator+(int dx, int dy) { return Point(x_+dx,y_+dy);}Therefore, the correct answer is: `Point(x_+dx,y_+dy)`
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how many paths are there from (0,0) to (13,11), where each step consists of going one unit up or one unit to the right, and path has to go through (3,3) and (7,7)?
The number of paths will be 1248072.
You must move 24 times, up 13 times, and right 11 times.
Consider placing a 13 up and 11 right order.
24 objects can be ordered in 24 different ways.
Both the sequence of the ups and the sequence of the rights are irrelevant.
Because there are 13 possible orders for the ups, you must divide by 13.
Because there are 11 different ways to number rights, you must also divide by 11.
So, The number of paths = 24! / (13! × 11!) = 1248072.
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