The hourly fees of $3.25 will produce the maximum value of revenue in the Skating rink.
Given function of the form:
R = -480F² + 3120F
Here R is the revenue and F is the hourly fees.
Now we will differentiate with respect to F
Hence.
[tex]\frac{dR}{dF} = -960F + 3120[/tex]
Now to find the maximum value we have to find the value of F for which [tex]\frac{dR}{dF}[/tex] is zero.
hence :
-960F+3120 = 0
or, F=3.25
Hence the value of F is 3.25 for which the revenue will be maximum.
Maxima and minima, the corresponding plurals of lower and upper bound of a function, are used in mathematical analysis to refer to the highest and lowest value of such a function, whether it be within or a defined range, the local the relative extrema, or throughout the entire domain.
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a) Complete the table of values for y = x² - 4x
-1 0
1 2
3
4 5
0
-3
X
y
5
b) Which of the three curves drawn
matches the graph of y = x² - 4x ?
A B YA C
-5-4-3-2
To complete the table of values for y = x² - 4x
The equivalent values to complete the table of values are 5, -1, -4 and 0
Given the function according to the table shown:
[tex]y = x^{2} -4x[/tex]
Now let us insert the values in the above given equation one by one
When we have x = -1
[tex]y = (-1)^{2} -4(-1)[/tex]
y = 1+4
y = 5
When we have x = 1
[tex]y = (1)^{2}-4(1)[/tex]
y = 1-4
y = -3
When we have x = 2
[tex]y = (2)^{2}-4(2)[/tex]
y = 4-8
y = -4
when we have x = 4
[tex]y = (4)^{2} -4(4)\\[/tex]
y = 16-16
y = 0
Hence the equivalent values to complete the table of values are 5, -1, -4 and 0
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help meeeeeeeeeeeeeeeeeeeeee
Answer:
To the nearest tenth, the length is 6.4 meters, and the width is 3.4 meters.
Step-by-step explanation:
Let w be the width of the rectangle. Then l = w + 3, and we have:
[tex] w(w + 3) = 22[/tex]
[tex] {w}^{2} + 3w = 22[/tex]
[tex] {w}^{2} + 3w - 22 = 0[/tex]
Calculating the discriminant:
[tex] \sqrt{ {3}^{2} - 4(1)( - 22)} = \sqrt{9 + 88} = \sqrt{97} [/tex]
So by the quadratic formula, and discarding the negative solution, we then obtain:
[tex]w = \frac{ - 3 + \sqrt{97} }{2} = 3.4[/tex]
[tex]l = w + 3 = 3.4 + 3 = 6.4[/tex]
Rosalia went on a long bike ride. The table shows how long she biked and the distance she traveled. Determine whether the relationship between hours biked and miles traveled is proportional.
The rate of change is not the same for all the cases so,
The relationship between hours biked and the miles traveled is not proportional.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
From the table, we need to find the rate of change between two given hours and the miles traveled at that time.
Now,
Between 1 hour and 2 hours.
The rate of change.
= (26 - 12) / (2 -1)
= 14 / 1
= 14
Between 2 hours and 3 hours.
The rate of change.
= (30 - 26) / (3 - 2)
= 4 / 1
= 4
Between 3 hours and 4 hours.
The rate of change.
= (48 - 30) / (4 - 3)
= 18 / 1
= 18
We see that,
The rate of change is not the same for all the cases so,
The relationship between hours biked and the miles traveled is not proportional.
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The drama club is selling tickets to their play to raise money for the show's expenses. Each student ticket sells for $4 and each adult ticket sells for $8. The auditorium can hold a maximum of 70 people. The drama club must make no less than $400 from ticket sales to cover the show's costs. Also, they can sell at most 50 adult tickets. If xx represents the number of student tickets sold and yy represents the number of adult tickets sold, write and solve a system of inequalities graphically and determine one possible solution.
The system of inequalities for the given situation is
x +y ≤ 70.
$4x + $8x ≤ $400.
y ≤ 50.
And one possible solution is (40,30) and the graph of the inequality is attached below.
Inequality:
Inequality refers the non equal comparison of the expressions.
Given,
The drama club is selling tickets to their play to raise money for the show's expenses. Each student ticket sells for $4 and each adult ticket sells for $8. The auditorium can hold a maximum of 70 people. The drama club must make no less than $400 from ticket sales to cover the show's costs. Also, they can sell at most 50 adult tickets.
Here we need to find the system of inequalities graphically and also determine one possible solution for it.
Let us consider x represents the number of student tickets sold and y represents the number of adult tickets sold.
Therefore, in here we know that, they can sell at most 50 adult tickets.
Which means that the value of y can't be greater than 50.
So, in inequality it can be written as,
y ≤ 50.
And the total number of seats in the auditorium is 70.
Therefore,
x + y ≤ 70
And we also know that, they sells the ticket at the cost not less than $400.
So,
$4x + $8x ≤ $400.
Now, we have to plot those inequality on the graph, the we get he following graph.
In the graph, the blue line represents the inequality x + y ≤ 70 and the red line represents the inequality $4x + $8x ≤ $400.
While we looking into the graph we have identified that the solution of the graph is (40,30).
Which means there are 40 number of students and 30 number of adults.
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48.06 ÷ 6 what is the anwser
Answer:
8.01 is the answer
Answer:
8.01
Step-by-step explanation:
A small publishing company is planning to publish a new book. The production costs will include one-time fixed costs (such as editing) and variable costs (suchas printing). The one-time fixed costs will total $30456. The variable costs will be $10 per book. The publisher will sell the finished product to bookstores at aprice of $21.75 per book. How many books must the publisher produce and sell so that the production costs will equal the money from sales?
Let x be the number of books that need to be sold, then for the cost of the production and the profit to be the same we can set the following equation:
[tex]30456+10x=21.75x\text{.}[/tex]Subtracting 10x from both sides of the equation we get:
[tex]30456=21.75x-10x,[/tex]adding like terms we get:
[tex]30456=11.75x\text{.}[/tex]Dividing by 11.75 we get:
[tex]x=2592.[/tex]Then the producer must sell 2592 books.
Answer: 2592.
A car's velocity is modeled by v(t) = 0.5t2 – 10.5t + 45 for 0 ≤ t ≤ 10.5, where velocity is in feet per second and time is in seconds. When does the car come to a complete stop?
2.5 seconds
6 seconds
10.5 seconds
15 seconds
Answer:
6 Seconds
Step-by-step explanation:
The car come to a complete stop after the time of 6 seconds.
What is defined as the velocity?Velocity is a vector assertion of an object's or particle's displacement with respect to time. The meter per second (m/s) is the standard unit of velocity magnitude (also recognized as speed). Alternatively, velocity magnitude can be expressed in centimeters per second (cm/s).For the given question;
A car's velocity is modeled by v(t) = 0.5t² – 10.5t + 45.
The time inequality is given as; 0 ≤ t ≤ 10.5.
To calculate the time for which velocity becomes zero.
Put v(t) = 0.
v(t) = 0.5t² – 10.5t + 45 = 0
0.5t² – 10.5t + 45 = 0
Divide equation by 0.5.
t² – 21t + 90 = 0
factorize the values.
(t - 15)(t - 6) = 0
t = 15 and t = 6 seconds
As, 0 ≤ t ≤ 10.5.
Thus, t = 6 seconds.
Therefore, the car come to a complete stop after the time of 6 seconds.
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The buyer purchased 48 lounge pants to be priced at $39. There were already 10 pair of lounge pants in stock but they were repriced from $34 to $39 for consistency. All of the lounge pants sold. (a) What was the additional markup percent earned on the lounge pants already in inventory? (b) What was the total net sales on all pants during the event?
Solution
Question A:
- The lounge pants already in stock are 10.
- The price of the pants was moved from $34 to $39. Thus, the markup percent is:
[tex]\begin{gathered} \frac{39-34}{34}\times100\% \\ \\ =\frac{5}{34}\times100\% \\ \\ =14.70588\% \end{gathered}[/tex]Five friends together earned $165 raking leaves. they divided the money evenly among the 5 of them. maria earned another $10 walking a neighbor's dog. how much money did maria earn in all?
Answer:
Maria earns $43
Step-by-step explanation:
$165 divided by 5 = $33 + $10 = $43
Given the line below.
Graph image attached
a. Using variables, write out the formula for the point-slope form of the equation.
b. Determine the slope of the line.
c. Identify the point (-1,-2) as (x1, y1).
d. Write the equation of the line in point-slope form.
Show all work on how you found the slope or determined the slope from the graph. Use the box provided to submit all of your calculations and final answers. Simplify the answer as needed.
(a) A point-slope form of the line is y - y₁ = m(x - x₁)
(b) The slope of the line is 2.
(c) The point (x₁, y₁) = (-1, -2).
(d) The equation of a line in point-slope form is y + 2 = 2(x + 1).
What is point-slope form?The formula for a straight line: y - y₁ = m(x - x₁), where m is the slope of the line and (x₁, y₁) is the coordinates of a specific point on the line
(a) Let the two points are (x₁, y₁) and (x₂, y₂)
Then the slope of the lines is given as
m = (y₂ - y₁)/ (x₂ - x₁)
The point-slope form of the line is given as
(y - y₁) = [(y₂ - y₁)/ (x₂ - x₁)] (x-x₁)
y - y₁ = m(x - x₁)
(b) From the graph, (x₁, y₁) = (-1, -2) and (x₂, y₂) = (1, 2)
So, slope = (2 -(-2))/ (1-(-1))
= (2+2)/ (1+1)
= 4/2
= 2
c) (x₁, y₁) = (-1, -2)
d) The equation of a line in point-slope form is given as
y - (-2) = 2(x- (-1))
y + 2 = 2(x + 1)
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A merchant is bagging potatoes that he will sell for 5 a bag he want to take 400 for then how many bags should he prepare
The number of bags that the merchant should prepare if he wants to make 400 is; 80 bags
How to solve Algebra Word Problems?The method to solve algebra word problems is as follows;
1. Carefully read through the problem thoroughly, and try to know the meaning.
2. Use variables to denote unknown numbers.
3. Translate the remaining part of the problem into a mathematical expression.
4. Solve the problem.
We are told that the merchant sells 5 for a bag. Now, he wants to make 400. This means if the number of bags is x, then;
x = 400/5
x = 80 bags
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x/7=2
2x/3=8
7x-10=11
9x+2=20
pls give a step-by-step answer
ITS URGENT
Answer:
x=14
Step-by-step explanation:
x/7=2
7 x x/7 = 7x2
Ellen mix is 1/3 cup of orange juice with 5/6 cups of lemonade to make fruit punch. Then she adds 1 2/3 cups of soda. Use the properties of addition to find how many cups of fruit punch she makes show your work
ANSWER:
2 5/6 cups
STEP-BY-STEP EXPLANATION:
To find the total cups, we must add the number of cups in each case, like this:
[tex]\frac{1}{3}+\frac{5}{6}+1\frac{2}{3}[/tex]For ease, we'll convert each fraction so that they all have the same denominator:
[tex]\begin{gathered} \frac{1}{3}=\frac{2}{6} \\ \frac{5}{6} \\ 1\frac{2}{3}=\frac{5}{3}=\frac{10}{6} \\ \text{therefore:} \\ \frac{2}{6}+\frac{5}{6}+\frac{10}{6}=\frac{2+5+10}{6}=\frac{17}{6} \\ \frac{17}{6}=2\frac{5}{6} \end{gathered}[/tex]That is to say that in total there are 2 5/6 cups of fruit punch
At work one day, Erica Franz received 11 packages. Speedy Delivery delivered four times as many as Ralph's Express, while Ralph's Express delivered one more than SendQuick Package Service. How many packages did each service deliver to Erica?
She received 1 package from SendQuick Package Service, 2 packages from Ralph's Express and 8 packages from Speedy Delivery
What is a word problem?A word problem is a mathematical exercise which is in the form of a hypothetical question that needs mathematical analysis and equations to be solved.
Let SQPS represent SendQuick Package Service
SD represent Speedy Delivery
RE represent Ralph's Express, then:
Let the number of packages from SQPS be x
The number of packages from RE will be x+1
The number of packages from SD will be 4(x+1)
Given that the total number of packages received is 11, then:
x + x+1 + 4(x+1) = 11
x + x+1 + 4x + 4 = 11
6x + 5 = 11
6x = 11-5
6x = 6
x = 1
x = 1 package from SQPS
x + 1 = 2 packages from RE
4(x+1) = 8 packages from SD
Therefore, Erica Franz received 1 package from SendQuick Package Service, 2 packages from Ralph's Express and 8 packages from Speedy Delivery
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Given the linear function describe end behavior of the graph as x decreases. (Hint: manipulate the equation to either standard form or slope intercept form
For the negative slope equation y = -x as the value of x increases y decreases.
What is a slope?
Slope or the gradient is the number or the ratio which determines the direction or the steepness of the line.
Given that the graph of a linear function has a negative slope. Suppose the equation with a negative slope is y = -x.
It would look like y = -m(x) + b.
As an illustration, m is 1 and b is 0. (You can try any random number; however, I looked for the most straightforward one so that we could easily observe it.) It will be written as y = -x. (You can also omit this and use random numbers)
If x = 3, y = -3 ; x = 5, y = -5 (x increases, y decreases)
If x = -1, y = 1 ; x = -5, y = 5 (x decreases, y increases)
Hence the answer is for the negative slope equation y = -x as the value of x increases y decreases.
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Solve the quadratic equation. Show all of your steps.
x² + 3x - 5 = 0
Ma
Rel
Gea
Gro
Trig
▸ Stat
I have a i just need b and e
By using the formula of perimeter of square and triangle, the following results are obtained.
Length of the side of square = 9
length of the side of triangle = 12
Area of square = 81
What is perimeter of square and triangle?
Perimeter of square and triangle is the total space taken by the square and triangle.
If the side of the square is a, then perimeter of square is 4a
If the side of the equilateral triangle is a, then perimeter of square is 3a
Length of the side of square = 4x - 3
Length of the side of triangle = 5x - 3
Perimeter of square = 4(4x - 3) = 16x - 12
Perimeter of triangle = 3(5x - 3) = 15x - 9
By the problem,
[tex]16x - 12 = 15x - 9\\16x - 15x = 12 - 9\\x = 3[/tex]
Length of the side of square = [tex]4 \times 3 - 3 = 9[/tex]
Length of the side of triangle = [tex]5 \times 3 - 3=12[/tex]
Area of square = [tex]9 \times 9 = 81[/tex]
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4.An image of a book shown on a website is 1.5
inches wide and 3 inches tall on a computer monitor.
The actual book is 9 inches wide.
5.
be
di
a) What scale is being used for the image? Explain or
show your reasoning.
b) How tall is the actual book? Show your
calculations.
S
a. The scale that is being used for the image is: 1 inches to 6 inches or 1 inches = 6 inches.
b. The actual book is 18 inches tall.
What is an Image?An image is the new figure formed when an original figure is dilated, either by enlargement or by reduction. The image is a similar figure to the preimage (original figure).
Given the following:
Width of the image = 1.5 inchesHeight of the image = 3 inchesActual book width (preimage) = 9 inchesa. The scale being used = width of image : width of preimage (actual book)
Scale = 1.5 : 9
Scale = 1 : 6
This is, 1 inches to 6 inches or 1 inches = 6 inches.
b. Height of image = 3 inches
Height of actual book (preimage) = 3 × 6 = 18 inches.
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CAN SOMEONE PLS HELP W THE ANSWERS I DONT EVEN NEED A STEP BY STEP BUT PLS HELPPPP
The measure of each angle is A = 113°, B = 25° and C = 42°, the length is each side is a = 8 mm, b = 5 mm, c = 5.4 mm.
Triangles:
Triangles are geometric figures of three sides with three internal angles. We can apply different laws and rules to solve different types of triangles. For example, the law of cosines allows us to solve oblique triangles. We can find sides and angles by applying this law. We can use the law of cosines if we have the length of two sides of a triangle and the angle formed by them.
Given that
a = 8
b = 5
c = 42°
To solve the triangle, we are first going to make a diagram with the given information:
We start by applying the law of cosines to find the length of
[tex]c^{2} = a^{2}+ b^{2}-2abcosc[/tex]
Substituting a =8, b = 5 and c = 42°, we have
[tex]c^{2} = 8^{2}+5^{2} -2(8)(5)cos42^{0}[/tex]
[tex]c^{2} = 64+25 - 59.45[/tex]
[tex]\sqrt{c^2} =\sqrt{64-34.45}[/tex]
c = 5.435 = 5.4
Now, we apply the law of cosines to find the measure of angle B
[tex]b^2 = a^2+c^2-2accosB[/tex]
Substituting the lengths a = 8, b = 5, c = 5.4
[tex]5^2 = 8^2+5.4^2- 2(8)(5.4)cosB\\[/tex]
Note: we can substitute the lengths of the sides without the unit. Simplifying, we have:
25 = 64+29.16 - 86.4 cos B
25 = 96.16 - 86.4 cos B
cosB = 0.603
Now, we must apply inverse cosine on both sides of the equation:
[tex]cos^-1(cos B) = cos^-1(0.603)\\\\[/tex]
B = 25.256°
B = 25°
Lastly, we apply summation of internal angles of a triangle to find the angle A:
A + B + C = 180°
we need to isolate angle A:
A + 25°+ 42° = 180°
A + 67° = 180°
A = 113°
Hence the answer is, the measure of each angle is A = 113°, B = 25° and C = 42°, the length is each side is a = 8 mm, b = 5 mm, c = 5.4 mm.
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PLEASE HELP IF YOURE GOOD AT GEOMETRY. TYSM. DUE TODAY
The image of the dilation is P'(-5, -5), Q'(0, -5), R'(10, 5) and S'(5, 5) and the graph is attached
How to graph the image of the rotation?The coordinates of the polygon are given as
P(-1, -1), Q(0, -1), R(2, 1) and S(1, 1)
The transformation is given as
A dilation with a scale factor of 5 about the origin
The dilation has the algebraic rule of
(x, y) ⇒ (5x, 5y)
So, we have
P'(-5, -5), Q'(0, -5), R'(10, 5) and S'(5, 5)
Hence, the coordinates of the image using the dilation rule is P'(-5, -5), Q'(0, -5), R'(10, 5) and S'(5, 5)
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Japanese adults eat about 79 pounds of fruit each year. How many years will it take for a Japanese adult to eat 1,100 pounds of fruit?
the length and width of a rectangular soccer field can be representedby 5x - y and x 3y. find the polynomial expression that represents thearea of the soccer field. write your answer in descending order. please use the palette below to enter your answer.
the polynomial expression that represents the area of the soccer field is
5x^2 -16xy +3y^2
given length of a rectangular soccer is 5x -y
and width of a rectangular soccer is x- 3y
find the polynomial expression that represents the area of the soccer field.
we know that the formula for the area of a rectangle is
area= length * width
=( 5x-y)*( x-3y)
= 5x^2 -15xy-xy +3y^2
= 5x^2 -16xy +3y^2
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Determine if the triangles are congruent. If so, state which reason proves the triangles are congruent.
Group of answer choices
Not congruent
SAS
HL
SSA
The △ABC is congruent to triangle △ADE (△ABC ≅ △ADE) under (B) SAS condition.
What do we mean by the congruency of triangles?Two triangles are said to be congruent if all three corresponding sides and all three corresponding angles have the same size.
You can move, flip, twist, and turn these triangles to produce the same effect.
So, first label the two triangles as △ABC and △ADE.
Now, to prove that △ABC ≅ △ADE:
BA = DA (Given)
AC = ED (Given)
∠BAC = ∠ADE (Since, both lines are similar, so the angle between them will also be soililar and congruent.
So, we can say that △ABC ≅ △ADE is under SAS conditions.
Therefore, the △ABC is congruent to triangle △ADE (△ABC ≅ △ADE) under (B) SAS condition.
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Complete question:
Determine if the triangles are congruent. If so, a state which reason proves the triangles are congruent.
Group of answer choices
a. Not congruent
b. SAS
c. HL
d. SSA
The sketch below shows part of the graph of y = ab",
where a and b are constants.
YA
(0,8)
Work out the values of a, b and k.
(1.5, k)
(1, 18)
Answer:
y = 8*(9/4)^x
Point (1.5, 27)
Step-by-step explanation:
We can solve each unknown in separate steps. The first step is to take advantage of given point (0,8) to find the value of a. Since x is zero, b^x will just be 1, regardless of b. That makes it easy to solve for a, which is found to be 8.
Once a is known, we can use the next point (1,18) to solve for b. b is (9/4).
Once we have a and b, we have the full equation: y = 8*(9/4)^x
k is found by entering the x value and solving for y (which is k). k = 27
See attached worksheet
what is the point-slope form of an equation for the line that passes through (0, -5 )with a slope of 2 a.y=2x-5b. y+5=2xc.y-5=x-2d.y=2(x+5)
The point slope form is:
[tex]y-y_0=m(x-x_0)[/tex]where m is the slope and (x0,y0) is a point of the line.
In this case, we know the point (0,-5) and the slope is m=2.
Then, we can write the equation in slope point form as:
[tex]\begin{gathered} y-(-5)=2(x-0) \\ y+5=2x \end{gathered}[/tex]Answer: y+5=2x (option b)
A pottery factory kept track of the number of broken plates per shipment Number of broken plates Number of shipments 2 376 2 380 6 567 5 737 2 928 964 3 X is the number of broken plates that a randomly chosen shipment had. What is the expected value of X? Write your answer as a decimal.
Answer: The expected value of X is 672.75
Expected value can be calculated using the below formula
[tex]\begin{gathered} \text{Expected value = }\frac{\Sigma fx}{\Sigma f} \\ \Sigma fx\text{ = 376 x 2 + 380 x 2 + 567 x 6 + 737 x 5 + 928 x 2 + 964 x 3} \\ \Sigma fx\text{ = 752 + 760 + 3, 402 + 3, 685 + 1, 964 + 2, 892} \\ \Sigma fx\text{ = 13, 455} \\ \Sigma f\text{ = 2 + 2 + 6 + 5 + 2 + 3} \\ \Sigma f\text{ = 20} \\ \text{Expected value = }\frac{13,\text{ 455}}{20} \\ \text{Expected value = 672.75} \end{gathered}[/tex]Therefore, the expected value of X is 672.75
The English teachers at Baker High School added a new class in creative writing. The teachers
expected 20 students to sign up, so they were very surprised when 45 students actually
enrolled. What is the percent error for their estimate?
17. P(-6, 16), Q(2, -4), R(-6, 14), S(-2, 4)Slope of PQ Slope of RSTypes of Lines
The formula for finding slope is expressed as
slope = (y2 - y1)/(x2 - x1)
where
y2 and y1 are final and initial values of the y coordinates respectively
x2 and x1 are final and initial values of the x coordinates respectively
Considering line PQ,
x1 = - 6, y1 = 16
x2 = 2, y2 = - 4
Slope = (- 4 - 16)/(2 - - 6) = - 20/8
Slope = - 2.5
Considering line RS,
x1 = - 6, y1 = 14
x2 = - 2, y2 = 4
Slope = (4 - 14)/(- 2 - - 6) = - 10/4
Slope = - 2.5
If the slope of two lines are equal, it means that they are parallel. We can see that the slopes of PQ and RS are equal. Thus,
Line PQ is parallel to line RS
2
if a= -3, find the value of a²
Answer:
a = 9
Step-by-step explanation:
[tex]a^{2}[/tex] = a*a
a = -3
-3 * -3 = 9
NOTE: 2 negative numbers multiplied by each other always equals a positive
So.... a = 9
We have two fractions, 3/4 and 7/6, and we want to rewrite them so that they have a common denominator (and whole number numerators).
What numbers could we use for the denominator?
Choose 2 answers:
(Choice A)
A
8
(Choice B)
B
12
(Choice C)
C
18
(Choice D)
D
24
Answer:
B
Step-by-step explanation: