Answers
The correct options regarding whether the graph can represent a normal curve are given as follows:
C. Yes, because the graph may not satisfy all of the criteria for a normal curve, but it satisfied at least one of them.D. No, because the graph is not always greater or equal to zero.What are the characteristics of a normal curve?The characteristics of a normal curve are defined as follows:
Single peak at the center of the distribution, which is also the mean of the distribution.The function is symmetric.The values of the tails at the distribution are close to 0.The values are all equal or greater to zero.In the context of this problem, these two first options are satisfied. However, the distribution contains negative values, meaning that the graph is not always greater or equal to zero.
Hence, options C and D are correct.
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Related Questions
the store bought a bike from the factory for 90$ and sold it to Andre for 117 what percentage was the markup?
Answers
The markup percentage was
[tex]\begin{gathered} P=\frac{117-90}{90}\cdot100 \\ P=\frac{27}{90}\cdot100 \\ P=30 \end{gathered}[/tex]The markup percentage was 30%.
what is the arc measure of ct in radians? what is the arc length in feet?
Answers
We will determine the arch lenght (In radians) as follows:
*First: We transform the measure of the angle from degrees to radians, that is:
[tex]\theta=80\cdot\frac{\pi}{180}\Rightarrow\theta=\frac{4\pi}{9}[/tex]*Second: We find the arc length:
[tex]s=r\theta\Rightarrow s=(13.2)(\frac{4\pi}{9})[/tex][tex]\Rightarrow s=\frac{88}{15}\pi[/tex]So, the arc length for CT is 88pi/15 radians.
*Third: We find its measure in feet:
[tex]s\approx18.43[/tex]So, the arch length for CT in feet is approximately 18.43 feet.
Find the opposite of –15.
Answers
Answer:15
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
If there is a negative sign just add a positive sign or remove the sign. And if it's a positive number add a negative sign.
Easy There we go!
A golf lesson lasts from 10:00 a.m. – 11:15 a.m. and includes a 15-minute break with equal lengths of time before and after the break. At what time should the break start?
Answers
A golf lesson lasts from 10:00 am - 11:15 am and includes a 15 minutes break with equal lengths of time before and after the break is at 10:30 am.
Total lesson time is 1 hour and 15 minutes (10:00 - 11:15)
There is 15 minutes break with equal lengths of time before and after break.
The lesson before the break is from 10 - 10:30
Therefore , break is at 10:30 am
Lesson resumes at 10:45 when break is over then lesson runs another 30 minutes until 11:15 am (10:45 - 11:15).
Therefore, the break is at 10:30 am in mid of 10:00 am - 11:15 am.
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Can you please also give all forms of the end behavior such as ups/downs, as_,_ , and limits #25
Answers
The given function is a rational function
We will find the zeros of the denominator
[tex]\begin{gathered} 2x+1=0 \\ 2x=-1 \\ x=\frac{-1}{2} \end{gathered}[/tex]The end behavior of the function will be as follows:
[tex]\begin{gathered} x\rightarrow(-\frac{1}{2})^-;f(x)\rightarrow\infty \\ x\rightarrow(-\frac{1}{2})^+;f(x)\rightarrow-\infty \\ x\rightarrow\infty;f(x)\rightarrow\frac{1}{2} \\ x\rightarrow-\infty;f(x)\rightarrow\frac{1}{2} \end{gathered}[/tex]The graph of the function is as follows:
1. If DM = 35, what is the value of r?
DG=r + 3 GM=4r-28
Answers
Answer:
r=32
Step-by-step explanation:
when DM=35
then. 35=r+3
35-3=r
r=32 therefore, substitute into
second equation to solve GM
GM=4r-28
GM=128-28
GM=100
A line contains points F, G, H, I, J. The space between F G is 2. The space between H and I is 1. The space between F and I is 7.
If FG = 2 units, FI = 7 units, and HI = 1 unit, what is GH?
3 units
4 units
5 units
6 units
Answers
The measure of GH is 4 units.
The correct option is (B)
What is equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side. It demonstrates the equality of the relationship between the expressions printed on the left and right sides. We have LHS = RHS (left hand side = right hand side) in every mathematical equation. To determine the value of an unknown variable that represents an unknown quantity, equations can be solved. A statement is not an equation if it has no "equal to" sign.
Given:
FG = 2 units, FI = 7 units, and HI = 1 unit
Now,
FI = FG+ GH +HI
7= 2 + GH + 1
7= 3 + GH
GH = 7-3
GH = 4 units
Hence, the measure of GH is 4 units.
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You have a tree in your yard that is 60 inches around. What is the diameter of the tree?
Answers
Given : a tree in your yard that is 60 inches around
60 inches represents the circumference of the tree
The circumference =
[tex]\pi\cdot d[/tex]Where d is the diameter of the tree
so,
[tex]\begin{gathered} \pi\cdot d=60 \\ \\ d=\frac{60}{\pi}\approx19.1 \end{gathered}[/tex]So, the answer is : the diameter of the tree is a bout 19.1 inches
6.25 ft7.25 cm11 cm8.921.6 m
Answers
The area of the shaded region can determined by substracting the area of rectangle from the area of triangle,
[tex]\begin{gathered} A=A_r-A_t \\ =14\operatorname{cm}\times25\operatorname{cm}-(\frac{1}{2}\times11\operatorname{cm}\times25) \\ =212.5cm^2 \end{gathered}[/tex]Thus, the area of the shaded region is 212.5 square centimeters.
y=-2/3x+5 and goes through (0, -2)
with steps please
Answers
The equation of the line with coordinate (0, -2) that goes through y = -²/₃x + 5 is; y = -²/₃x - 2
What is the Equation of the Line?We know that the general formula for an equation of a line in slope intercept form is;
y = mx + c
where;
m is slope
c is y-intercept
Now, from the given equation of y = -²/₃x + 5, we can say that;
Slope; m = -²/₃
y-intercept = 5
Thus, equation of the new line would be;
y - (-2) = -²/₃(x - 0)
y + 2 = -²/₃x
y = -²/₃x - 2
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Write the domain and range of g as intervals or unions of intervals
Answers
It's important to know that empty circles refer to open intervals or parenthesis.
In this case, we observe that the first interval of the domain is (-1, 1) and the second interval of the domain is (2, 5), so the whole domain would be the union of these two intervals.
[tex]\text{Domain}=(-1,1)\cup(2,5)[/tex]To obtain the range, let's observe the y-values. The function goes from y = -5 to y = 3, so the range would be
[tex]Range=(-5,3)[/tex]A price-taking firm makes air conditioners. The market price of one of its new air conditioners is $125. The firms total cost information is given in the table below
Answers
1. Calculating the marginal cost per day yields the following results:
Air conditioners Total cost Marginal cost
per day ($ per day) ($ per day)
1 100 100
2 150 50
3 220 70
4 310 90
5 405 95
6 510 105
7 650 140
8 800 150
2. To maximize profits, the price-taking firm should produce 6 air conditioners per day.
What is the profit-maximizing point?The profit-maximizing point or units is the output and price interaction that ensures that the marginal revenue equals the marginal cost.
The marginal revenue (MR) is the revenue earned from an additional unit. The marginal cost (MC) is the production cost per additional unit.
For price-taking firms, the maximum profit is achieved at the level of output where MC equals MR.
Market Price for one unit = $125
Air conditioners Total cost Marginal cost
per day ($ per day) ($ per day)
1 100 100 (100 - 0)
2 150 50 (150 - 100)
3 220 70 (220 - 150)
4 310 90 (310 - 220)
5 405 95 (405 - 310)
6 510 105 (510 - 405)
7 650 140 (650 - 510)
8 800 150 (800 - 650)
Thus, profit is not maximized where the MC exceeds the MR. Instead producing at that unit reduces profit.
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Question Completion:Total Cost Information
Air conditioners Total cost
per day ($ per day)
1 100
2 150
3 220
4 310
5 405
6 510
7 650
8 800
1. Calculate marginal cost per day, and enter your responses as whole numbers.
2. How many air conditioners should the firm produce per day if its goal is to maximize its profit? air conditioners per day.
Create a data set that has 4 values with a mode of 3, a median of 6, and a meanof 10
Answers
We are to create a data set of 4
that is a, b, c, d
mode means a number that occur the most
Median means the middle number
Mean means the average number
in the set, we must have a mode of 3
3, 3,
to get a median of 6, we need a number when we add to three and divide by 2 will give us 6
the number is 9
3 + 9 / 2
12/ 2 =
3, 3 , 9, d
the last number is d and it is unknown
since means is 10
mean = summation of all the numbers in the data set / the total number
the total number is 4
mean = 10
10 = 3 + 3 + 9 + d / 4
cross multiplication
10 x 4 = 3 + 3 + 9 + d
40 = 6 + 9 + d
40 = 15 + d
isolate d
d = 40 - 15
d = 25
therefore, the data set with a mode of 3, median of 6 and a mean of 10 are
3 , 3 , 9, 25
DUE IN 40 MIN PLEASE HELP
Answers
Answer:
[tex]f(x) = $\begin{cases}3x-4 & -2\le x < 1\\x + 3 & 1 \le x \le 5\\8 & 5 \le x \le 8 \end{cases}$[/tex]
Step-by-step explanation:
The permissible values of x for a function is called the domain of the function. Permissible values mean that the function is real and defined.
The range of a function is the set of all y values for the domain
If a point on a graph is a filled circle, that point is included in the domain(x-value) and represents a ≤ or a ≥ inequality
If a point on a graph is an unfilled or hollow circle, that point is not included in the domain(x-value) and represents a < or a >inequality
Let's look at the three parts of the given piecewise graph
Piecewise part A
We see that the minimum and maximum values of x for this function are x = -2 and x = 1 respectively. The point corresponding to x= 1 is a hollow circle so it is not included in the domain whereas the point corresponding to x = -2 is included
Let's find the equation of this line:
Take 2 points on the line. We choose points (0, -4) and (1, -1)
Slope of this line is -1 -(-4)/(1-0) = (-1 + 4)/1 = 3
The y-intercept is -4
So equation of the line is y = 3x -4 for -2 ≤ x < 1
Proceeding in a similar manner we can determine the domain and function equation for the other two pieces, B and C
Piecewise part B
Domain of x : 1 ≤ x ≤5
Slope = (8-4)/(5-1) = 4/4 = 1
Equation is of the form y = 1x + b
To calculate b, plug in values of x = 1, y = 4 to get
4 = 1(1) + b
b = 3
Equation of this piecewise function is
y = x + 3 for 1 ≤ x ≤ 5
Piecewise Part C
This is a flat horizontal line at y = 8
So that is the equation of the line
The domain of this piece is 5 ≤ x ≤ 8
So we get y = 8 for [tex]$\begin{cases}3x-4 & -2\le x < 1\\x + 3 & 1 \le x \le 5\\8 & 5 \le x \le 8 \end{cases}$[/tex]
Normally, instead of using y we use f(x)
Putting all this together we get the piecewise function defined as
[tex]f(x) = $\begin{cases}3x-4 & -2\le x < 1\\x + 3 & 1 \le x \le 5\\8 & 5 \le x \le 8 \end{cases}$[/tex]
help me on my hw! I don't understand (answers are already there but mine doesn't match any)
Answers
The answer is d. 82.1
Explanation:
Tan 75 = x/22
Find LM tangent angle circle
Answers
Applying the two-tangent theorem, the length of LM is: A. 18.
What is the Two-Tangent Theorem?The two-tangent theorem states that if two tangents are drawn from a circle to meet at a point outside the circle, then the tangent segments are congruent to each other, that is they have equal lengths.
Segments LK and LM are tangent segments drawn to meet at the external point L. This means, the length of Lk and the length of LM would be equal to each other.
LK = 4x - 2
LM = 3x + 3
LK = LM
Substitute
4x - 2 = 3x + 3
Combine like terms
4x - 3x = 2 + 3
x = 5
LM = 3x + 3
Plug in the value of x
LM = 3(5) + 3
LM = 15 + 3
LM = 18
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The mean Exam score on the SOC 15 Exam 2 is 84.28 with a standard deviation of 6.71Your friend scored an 86 on the exam. What percentage of students scored lower than your friendon the exam?
Answers
First, find the z-score of 86
[tex]\begin{gathered} z=\frac{x-\mu}{\sigma} \\ z=\frac{86-84.28}{6.71} \\ z=\frac{1.72}{6.71} \\ z=0.2563 \end{gathered}[/tex]Rounding to the nearest hundredth, that is 0.26
Next, find z = 0.26 to the left of z in the z-table and we have the following
Multiply by 100%, and we have
[tex]\begin{gathered} P(z<0.26)=0.60257 \\ \\ 0.60257\cdot100\%=60.257\% \end{gathered}[/tex]Therefore, the percentage of students who scored lower than 86 is 60.257%.
10^-6/10^-2 this is my question
Answers
Answer:
[tex] \frac{1}{10000} [/tex]
or Decimal
[tex]0.0001[/tex]
Step-by-step explanation:
Greetings !
look at the figure i have attached above
Hope it helps !!
4. Find and interpret theaverage rate of change forthe interval. Show your work.1
Answers
Average rate of change = -2 celcius / hour
Interpretation: For every unit change in the time (x), there is a change of -2 celcius in the temperature
Explanations:The average rate of change is to be found for the interval:
[tex]1\text{ }\leq x\leq3[/tex]From the interval, we can deduce that:
[tex]x_1=1,x_2=3[/tex]Know the corresponding value of y for each value of x shown above:
[tex]\begin{gathered} \text{When x}_1=1,y_1=\text{ 6} \\ \text{When x}_2=3,y_2=\text{ 0} \end{gathered}[/tex]The average rate of cgange is given by the formula:
[tex]\begin{gathered} \frac{\delta y}{\delta x}=\text{ }\frac{y_2-y_1}{x_2-x_1} \\ \frac{\delta y}{\delta x}=\text{ }\frac{0-6}{3-1} \\ \frac{\delta y}{\delta x}=\frac{-6}{3} \\ \frac{\delta y}{\delta x}=-2 \end{gathered}[/tex]The rate of change for the interval is -2 celcius/hour
This can be interpreted as for every unit change in the time (x), there is a change of -2 celcius in the temperature
How many positive real zeroes does f(x) = x⁵ - 4x³ + 7x² + 3x - 5 have?
Answers
Given -
f(x) = x⁵ - 4x³ + 7x² + 3x - 5
To Find -
How many positive real zeroes does f(x) have =?
Step-by-Step Explanation -
We have
f(x) = x⁵ - 4x³ + 7x² + 3x - 5
where the signs of coefficients are:
+ - + + -
We can see there are three changes in the sign in f(x).
So, from
Descarte's rule,
there are either 3 0r 1 positive real roots
Now,
f(-x) = -x⁵ + 4x³ + 7x² - 3x - 5
Signs: - + + - -
So, here f(-x) has two sign changes.
From this we can conclude there is at least 1 real root and either 4, 2 or 0 imaginary roots.
Final Answer -
Positive real zeroes f(x) have =
Minimum = 1
Maximum = 3
Solve for brainliest and 20 points please
Answers
Answer:
C.
Step-by-step explanation:
540
Answer:
540
Step-by-step explanation:
you can use this equation to find the sum of angles for a shape
(n-2)180 with n being the number of sides. Since a pentagon has 5,
its 5-2= 3 then times 180 is 540
A group of friends were working on a student film. They spent all their budget on equipment and props. They spent $369 on equipment and 55% of the total budget on props. What was the total budget for their student film
Answers
Answer: t = 820
Step-by-step explanation:
1) Set up the equation
369 + 55%t = t
2) Simplify the percentage
369+ 0.55t = t
3) Minus 0.55 t on both sides
369 = 0.45t
4) Set t by itself.
t = 820
A cone has a volume of 3014.4 cubic inches and a radius of 12 inches.what is the height?
Answers
h = 20inches
Explanations:The formula for calculating the volume of a cone is expressed as:
[tex]V=\frac{1}{3}\pi r^2h[/tex]where:
r is the radius
h is the height
Given the following
r = 12 inches
V = 3014.4 cubic inches
Substitute to determine the height
[tex]\begin{gathered} 3014.4=\frac{1}{3}\times3.14\times12^2\times h \\ 3014.4\times3=452.16h \\ h=\frac{9043.2}{452.16} \\ h=20inches \end{gathered}[/tex]Hence the height of the cone will be 20inches
Keisha is making potato casserole for a party. she needs 3/2 of a potato per guest. how many potatoes will she need for 15 guest
Answers
Keisha needs 3/2 of potato per guest ( i.e one guest is equivalent to 3/2 potato)
Thus, for 15 guests
she needs;
[tex]\begin{gathered} 15\text{ }\times\frac{3}{2} \\ \frac{15\times3}{2}=\frac{45}{2} \\ 22\frac{1}{2} \end{gathered}[/tex]Keisha needs 45/2 potatoes for 15 guests
How do I solve this problem?By using the pythagorean identities.
Answers
Given the equation:
[tex]\sin ^2x(\csc ^2x-1)[/tex]Using the Pythagorean identities
so,
[tex]\csc ^2x-1=\cot ^2x[/tex]so, the equation will be:
[tex]\begin{gathered} \sin ^2x\cdot\cot ^2x \\ \\ =\sin ^2x\cdot\frac{\cos ^2x}{\sin ^2x} \\ \\ =\cos ^2x \end{gathered}[/tex]Please answer correctly and tell me if its linear quadratic or exponential please.
Answers
Answer:
Exponential
Step-by-step explanation:
If the initial difference has the same value, the model will be linear.
If the value of the second difference is the same, the model will be quadratic.
If the difference has been calculated more than five times before duplicate values are discovered, the model might be exponential or involve another unique equation.
Hope this helps!
When graphing these points on a coordinate plane, we will find that it forms a curvy pattern.
When a graph forms a pattern of the points to form a curve, the graph is exponential.
When a graph forms a pattern of the points in resemblance of a “U” shape, the graph is quadratic.
When a graph forms a pattern of the points in resemblance of a straight line, the graph is linear.
For an example of an exponential graph, see the picture attached.
Use the table to find the products od the two polynomials. Write your answer in descending order l.
Answers
Answer:
To use the given table to find product of the two polynomials.
Given that,
[tex](x^2+x-2)(4x^2-8x)[/tex]Explanation:
Using the table, we get it as,
we get,
[tex](x^2+x-2)(4x^2-8x)=4x^4-8x^3+4x^3-8x^2-8x^2+16x[/tex][tex]=4x^4-4x^3-16x^2+16[/tex]we get,
[tex](x^2+x-2)(4x^2-8x)=4x^4-4x^3-16x^2+16[/tex]Answer is:
[tex](x^2+x-2)(4x^2-8x)=4x^4-4x^3-16x^2+16[/tex]Tom invested $2500 a year in a mutual fund for 15 years. If the market value of the fund increases 5% per year, what will be the value of the fund after 15 deposits?
Answers
The value of the mutual fund of Tom after 15 deposits will be $5197.320 .
In the question ,
it is given that , Tom invested $2500 in mutual fund for 15 years ,
So,
the investment amount(P) = $2500 .
time for investment(x) = 15 years
rate of increase(r) = 5% = 0.05
The amount of fund after 15 deposits can be calculated using the formula
amount = P*(1+r)ˣ
Substituting the values of P, x and r , we get
amount = 2500*(1 + 0.05)¹⁵
= 2500*(1.05)¹⁵
= 5197.320
Therefore , The value of the mutual fund of Tom after 15 deposits will be $5197.320 .
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A recipe that makes 10 pancakes calls for 13/4 cups of milk. If you want to scale down the recipe so that it makes only 2 pancakes, about how much milk should you use? A. 3/4 cup B. 1/2 cupC. 7/20 cup D. 3/10 cup E. 7/12 cup
Answers
13/20 cups
Explanations:The recipe makes 10 Pancakes with 13/4 cups of milk
The recipe will make 1 pancake with x cups of milk
[tex]\begin{gathered} x\text{ = }\frac{13}{4}\div10 \\ x\text{ = }\frac{13}{4}\times\frac{1}{10} \\ x\text{ = }\frac{13}{40} \\ \end{gathered}[/tex]The recipe will make 1 pancake with 13/40 cups of milk
The recipe will make 2 pancakes with (2 x 13/40) cups of milk
= 26 / 40
= 13 / 20
The recipe will make 2 pancakes with 13/20 cups of milk
Hi, can you help me answer this question please, thank you!
Answers
Given that
[tex]\begin{gathered} \mu_d=\mu_2-\mu_1=21.1 \\ s_d=14.9 \\ n=8 \end{gathered}[/tex]a) The formula for the test statistics for this sample is,
[tex]t=\frac{\mu_d}{s_d\sqrt[]{n}}[/tex]Therefore,
[tex]\begin{gathered} t=\frac{21.1}{14.9\times\sqrt[]{8}}=0.50067 \\ t=0.50067\approx0.501(3\text{ decimal places)} \\ \therefore t=0.501 \end{gathered}[/tex]Hence, the test statistic for this sample is
[tex]t=0.501[/tex]b)