Answer:
(x, y) = (1120, 700)
Step-by-step explanation:
You want the number of discount (x) and premium (y) tickets to be sold so that a total of 1820 tickets are sold for $40 and $45, respectively, and they generate revenue of $76,300.
EquationsThe equations reflect the relationships stated in the problem:
x + y = 1820 . . . . . . the total number of tickets sold is 1820
40x +45y = 76,300 . . . . . total sales must be $76,300
SolutionIt usually works well to substitute for the variable representing the lower-price tickets:
40(1820 -y) +45y = 76300 . . . . . . substitute for x using the first equation
5y = 3500 . . . . . . . . . . . . . . subtract 72800, simplify
y = 700 . . . . . . . . . . . . divide by 5
x = 1820 -700 = 1120
The numbers of tickets of each type sold are (x, y) = (1120, 700).
A triangle is partitioned into three triangles and a quadrilateral by drawing two lines from vertices to their opposite sides. The areas of the three triangles are 10, 20, and 16, as shown. What is the area of the shaded quadrilateral? （ ）
A. 24
B. 28
C. 32
D. 36
E. 44
the area of the shaded quadrilateral is equal to the sum of area of triangle AOC and BOC is equal to 110 unit square.
Suppose area of triangle CEO = x and area of COD =y
OE : OB = 16:20 (Ratios of the areas of AEO and AOB)
Hence, Area of CEO : Area COB = 16:20
Area of CEO : (Area of COD +Area of DOB) = 16;20
x : (y+10) = 16:20
10x=5(y+10) ........(1)
AO : OD = 20:10 (Ratios of the areas of AOB and DOB)
Hence, Area of AOC : Area DOC = 20:10
(Area of AOE + Area of COE) : Area of DOB= 20:10
(16+x) : y = 20:10
16+x=2y.......(2)
From (1) and (2)
x=68 and y=42
so the area of quadrilateral is 110.
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List the values of x at which f has a local minimum. Select the correct
choice below and fill in any answer boxes within your choice.p
The values of x at which the function has a local minimum are x = -4, 12.
What is the local minimum?The point in the domain of the functions with the lowest value is known as the local minimum. You may calculate the local minimum by determining the function's derivative. The first derivative and second derivative tests are the two key techniques for locating a function's local minimum.
There are several applications for the local minimum notion in business, economics, and engineering.
The least value of the function f(x) in the specified domain is essentially what the local minimum is.
From the graph, we observe
The value of the function f(x) is minimum at x = - 4 and x = 12
Therefore, x = -4, 12
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Joanie is organizing her closet. She has 3 times as many black shirts as gray shirts, plus 3 new black shirts she just bought. She has 5 times as many white shirts as gray shirts, minus the one white shirt she donated. Joanie has 2 times more gray short than brown shirts. If she has the same number of black and white shirts, how many gray shorts does Joanie have?
If Joanie is organizing her closet. She has 3 times as many black shirts as gray shirts, plus 3 new black shirts she just bought. The number of gray shirts that Joanie have is: 2.
How to find the number of shirts?Let x represent the number of gray shirts
Let Joanie black shirts = 3x + 3
Let Joanie white shirts = 5x - 1
Let Joanie brown shirts = 2x
So,
3x + 3 = 5x - 1
Substract 3 from both side
3x + 3-3 = 5x - 1 -3
3x = 5x -4
Substract 5x from both side
3x-5x = 5x -4 -5x
-2x = -4
Divide both side by
x = -4/-2
x =2
Therefore, Joanie has 2 gray shirts.
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Kory pays 1/3 of his income in tax. He then spend 4/5 of what remains after tax, and places the rest into a savings account. What fraction of his income does he put into his saving account?
Answer:
2/5 of income put into savings
Step-by-step explanation:
Let Kory's income be X
1/3 of his income goes to taxes so taxes are X/3
Remaining is (1- 2/3) of income = (2/3 ) X
He spends 4/5 of this remaining amount
So balance after expenditure = (1- 4/5) = 1/5 of the remaining income and this amount is put into savings
Fraction of income in savings = 1/5 x 2/3 X = (2/15)X
So fraction put into savings account is 1/5 of total income
If you find it confusing to work with fractions such as these, I suggest an alternate approach which may make it easier to understand
Pick an amount for total income. Since the denominators are 3 and 5, choose an amount which is divisible by both 3 and 5 or in other words divisible by 15
Let's choose 300, a convenient number
Tax Paid = 1/3 x 300 = 100
Income after tax = 300 - 100 = 200
which is same as 2/3 x 300
Spending = 4/5 x 200 = 160
Balance in savings = 200 - 160 = 40 same as 1/5 x 200
So amount in savings as a fraction of income = 40/300 = 2/15
The dog shelter has Labradors, Terriers, and Golden Retrievers available for adoption. If P(terriers) = 85%, interpret the likelihood of randomly selecting a terrier from the shelter.
A. Likely
B. Unlikely
C. Equally likely and unlikely
D. This value is not possible to represent probability of a chance event
The dog shelter has Labradors, Terriers, and Golden Retrievers available for adoption. P(terriers) = 85% is likely Option B
What is probability?Generally, Probability is the area of mathematics that deals with providing numerical descriptions of the likelihood that an event will take place or the likelihood that a statement will be correct.
A number between 0 and 1 may be thought of as representing the chance of an event happening, with 0 indicating that the occurrence is impossible and 1 indicating that it will definitely happen.
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Vigorous exercise helps people live several years longer (on average). Whether mild activites like slow walking extend life is not clear. Suppose that the added life expectancy from regular slow walking is just 2 months. A statistical test is more likely to find a significant increase in mean life expectancy if:
(a) it is based on a very large random sample and a 5% significance level is used.
(b) it is based on a very larg random sample and a 1% significance level is used.
(c) it is based on a very small random sample and a 5% significance level is used.
(d) it is based on a very small random sample and a 1% significance level is used.
(e) the size of the sample doesnt have any effect on the significance of the test.
A statistical test is more likely to find a significant increase in mean life expectancy if it is based on a very large random sample and a 1% significance level is used.
As per the given data
Vigorous exercise helps people live several years longer.
The mild activities like slow walking extend life is not clear.
The added life expectancy from regular slow walking is just 2 months.
Here we have to determine that when a statistical test is more likely to find a significant increase in mean life expectancy.
The increase in life expectancy regarding regular slow walking should be considerably greater than 2 months, which means that the a larger sample is needed to give a more precise result
The chances of finding significant results increases when we increase sample size or use a higher significance level.
So, among the given options, significant results will be achieved
If it is based on a very large random sample and a 1% significance level is used.
Therefore option (b) is correct.
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The 3-4-5 right triangle is a commonly used right triangle. Use the inverse sine function to determine the measure of the angle opposite the side of length 3.
The measure of the angle opposite the side of length 3 is approximately 53.13 degrees.
To find the measure of the angle opposite the side of length 3, we need to use the inverse sine function. The inverse sine function can be written as sin^−1(x). We can use the Pythagorean Theorem to calculate the side length of the triangle, which is 3^2 + 4^2 = 5^2. Therefore, we can use the inverse sine function to calculate the measure of the angle opposite the side of length 3. To do this, we will take the ratio of the side of length 3 to the hypotenuse, which is 3/5. We can then plug this value into the inverse sine function, which gives us sin^−1(3/5). Calculating this value gives us approximately 53.13 degrees, which is the measure of the angle opposite the side of length 3.
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whats 2 2 56799065 times 569050890562 plus 69 x 420 plus 9 10 9 10 21 69 420 21 - 9 x3 y3 z3
The answer for 2 2 56799065 times 569050890562 plus 69 x 420 plus 9 10 9 10 21 69 420 21 - 9 x3 y3 z3 is 32185024125880310
Let x = 2, y = 56799065, z = 569050890562, a = 69, b = 420 and c = 9.
The equation is: 2x + y × z + a × b + (9 + 10 + 9 + 10) × (21 + 69 + 420 + 21) - 9 × 3 × y × 3 × z × 3
We can calculate this equation as follows:
2 × 2 + 56799065 × 569050890562 + 69 × 420 + (9 + 10 + 9 + 10) × (21 + 69 + 420 + 21) - 9 × 3 × 56799065 × 3 × 569050890562 × 3
= 4 + 32185023742042530 + 28380 + 145800 - 1365466177461590
= 32185024125880310
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2
10 points
(2p+3)(3p-2)
O5p²-23p-10
O 6p²+5p-6
O 6p²-6
O 5p²-10
Answer:
B. 6p²+5p-6
Step-by-step explanation:
[tex]\bf \left(2p+3\right)\left(3p-2\right)[/tex]
Let's apply the FOIL method:-
[tex]\bf \left(2p+3\right)\left(3p-2\right)=[/tex]
[tex]\bf 2p\times \:3p+2p\left(-2\right)+3\times\:3p+3\left(-2\right)[/tex]
[tex]\bf 6p^2-4p+9p-6[/tex]
[tex]\bf 6p^2+5p-6[/tex]
Therefore, option B. 6p²+5p-6, is your answer!
__________________
Hope this helps!
Have a great day!
Evaluate the expression 3s - 4q - m² where m= 4, q= -3, and s = -24.
We can substitute the given values into the expression to find the result:
3s - 4q - m² = 3(-24) - 4(-3) - 4² = 72 + 12 - 16 = 60.
So the expression equals 60 when m= 4, q= -3, and s = -24.
On 21/04 the service fee for depositing the amount of R2239.10 was 31.74. Determine the service fee as a percentage of the deposited amount
To determine the service fee as a percentage of the deposited amount, we can use the following formula:
What does math's % mean?
In essence, percentages are fractions with a 100 as the denominator. We place the percent symbol (%) next to the number to indicate that the number is a percentage. For instance, you would have received a 75% grade if you answered 75 out of 100 questions correctly on a test (75/100).
Service fee percentage = (Service fee / Deposited amount) x 100
In this case:
Service fee percentage = (31.74 / 2239.10) x 100 = 1.41%
So, the service fee for depositing the amount of R2239.10 was 1.41% of the deposited amount.
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On a line segment, U is between T and V. If TU = 11x − 15, UV = 10x, and TV = 20x − 3, what is TU?
The value of TU is 117.
What is a line segment?
A line segment in geometry is a section of a straight line that is enclosed by two clearly defined endpoints and contains all of the points on the line that lies inside those endpoints. The Euclidean distance between two ends of a line segment determines its length.
Here, we have
Given: U is between T and V. If TU = 11x − 15, UV = 10x, and TV = 20x − 3.
We have to find the value of TU.
TV = TU + UV
20x − 3 = 11x − 15 + 10x
20x − 3 = 21x - 15
-3 + 15 = 21x - 20x
12 = x
Now, we have TU = 11x − 15.
We put the value of x on TU and we get
TU = 11x − 15
TU = 11(12) - 15
TU = 132 - 15
TU = 117
Hence, the value of TU is 117.
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A mother is 66 inches tall, and her daughter is 33 inches tall. Which of the following equations describes the relationship between m, the height of the mother, and g, the height of the daughter?
A. g=2/m
B. g = 2m
C. g=m/2
D. g=m-2
Answer: your answer is c
Step-by-step explanation:
Please help me...I neep help
By using the formula for the mean:
(x₁ + x₂ + ...)/N
We will see that the mean is 7 minutes.
What is the mean of the times?If we have a set of N elements:
{x₁, x₂, x₃...}
The mean of these values is given by:
(x₁ + x₂ + ...)/N
Here we have a set of 3 points, such that the points are {5, 6, 10} the mean of these points is:
M = (5 + 6 + 10)/3
M = 21/3
m = 7
The mean of the tmes is 7 minutes.
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while grading her students' most recent quiz on equation solving, mrs. jones calculated that approximately forty percent of her students answered question number 14 with multiple choice option b, while the other sixty percent answered a or c. question #14 from Mrs. Jones's students' most recent quiz:
14) Solve the single variable equation for n.
a.n=3
b.no solution
c.infinitely many solutions
Use complete sentences to compare the similarities and differences of each of the multiple choice answer options A-C. In your answer, rationalize why a student would choose each of the options as the correct answer
If while solving an equation, a single value is obtained for the variable, then the equation has only a single solution.
The option (a) is n=3.
If while solving an equation, a single value is obtained for the variable, then the equation has only a single solution. If n=3 is obtained after solving the equation, then the student should chose option (a) as the answer.
The option (b) is "no solution".
While solving an equation, if we obtain an equation which is mathematically false, then the equation will have no solution. So, no solution is chosen when no value is obtained for n and the final equation is mathematically false.
The option (c) is "infinitely many solutions".
While solving an equation, if we obtain an equation which is mathematically correct such as 0=0, 7=7 etc., then the equation will have infinietly many solutions. So, infinitely many solutions is chosen when no value is obtained for n and the final equation is mathematically correct.
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Which of the following are square properties? Choose ALL that apply.
Four right angles.
Exactly one pair of parallel sides.
Diagonals are perpendicular.
Diagonals are congruent.
Sove the inequality, I need the step by step for this please
|x +1|>-3
The solution for the inequality |x +1|>-3 is x > -4 or x < -4.
What is inequality?Inequality is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are not equal.
To solve the inequality |x + 1| > -3, we need to consider two cases:
x + 1 > -3: In this case, we can subtract 1 from both sides to get x > -4.
x + 1 < -3: In this case, we can subtract 1 from both sides to get x < -4. However, we also need to reverse the inequality symbol because we are multiplying or dividing by a negative number.
So the solution for the inequality is x > -4 or x < -4.
To get the final solution, we need to consider the combined solution from both cases:
x < -4 or x > -4
This represents as follows:
[tex]\begin{bmatrix}\mathrm{Solution:}\:&\:\mathrm{True\:for\:all}\:x\:\\ \:\mathrm{Interval\:Notation:}&\:\left(-\infty \:,\:\infty \:\right)\end{bmatrix}[/tex]
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she created ordered pairs, (height , weight), from the data and found they defined a function. which of the following actions would cause alex's set of ordered pairs to no longer define a function?
Option(B) is the correct answer. The answer is - Adding data from a student who is 154 cm tall and weighs 69kg.
A function is a set of ordered pairs in which no two different ordered pairs have an identical x -coordinate. An equation that makes such a set of ordered pairs defines a function.The domain of the function is the set of all inputs and the range of the function is the set of all outputs. To check to see if a set of ordered pairs or a list presented by a table is a function or not, check to make sure that each input value is paired with only one output value.Read more about function:
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Which facts could be applied to simplify this expression? Check all that apply. 5 x + 3 y + (negative x) + 6 z Group of answer choices The simplified expression is 5 x + 3 y + 6 z. To add like terms, add the coefficients, not the variables. First add 5x + x. Only combine terms which contain the same variable. The simplified expression is 4 x + 3 y + 6 z.
Answer:
I dont understand what this is can you add a picture of the question?
Step-by-step explanation:
It’s Election Day for a club. If a president and vice president are elected, how many combinations can be made among eight people
The number of combinations that can be made among eight people is given as follows:
56 combinations.
How to obtain the number of combinations?As there are different roles, the order is important, hence the permutation formula is used to solve this question.
The number of possible permutations of x elements from a set of n elements is given by:
[tex]P_{(n,x)} = \frac{n!}{(n-x)!}[/tex]
For this problem, two people are selected from a set of 8, hence the number of combinations is given as follows:
P(8,2) = 8!/6! = 8 x 7 = 56 combinations.
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a) You see a general expression written as ax? + bx4 + cx3 + dx2, determine the possible number of zeroes that could exist. (2 marks) b) Factor 2x3 - 9x2 + 7x + 6 and list all roots for the expression. (7 marks) c) Given that x = -1 and x = 2 are roots for ax4 + 3x3 – 12x2 + bx + 6, determine the values of a and b. (7 marks)
The maximum number of zeroes in a generic equation with the form axe? + bx4 + cx3 + dx2 is 5.
What is meant by expression?A mathematical expression is a phrase that includes at least two numbers or variables, at least one arithmetic operation, and the expression itself. Any one of the following mathematical operations can be used.A statement using numbers, variables, and operations is known as an expression. An equation has an equals sign, whereas an expression lacks one. This is the main distinction between the two types of sentences. Terms and operations are used to create mathematical expressions.a) [tex]$ax^{5}[/tex]
b) Factor 2x3 - 9x2 + 7x + 6 is
(x - 3) (x -2) (2x + 1)
c) x = -b / 2a
Replace x by -2, from the vertex:
-2 = -b / 2a
Solve for b:
-b = -4a
Or
b = 4a
By evaluating the equation with the vertex's x-value, we can determine the y-value from the vertex:
y = ax2 + 4ax - 6
Simplify, 6 for y, and -2 for x:
6 = a(-2)2 + 4a(-2) - 6
6 = 4a - 8a - 6
solve for a:
a = -3
Simplifying the above equation,
b = 4a, b = -12
The value for a is -3.
The value for b is -12
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Topic Probability
If you roll unbiased dice 600 times. how many would you expect to obtain
a)a one
b)an even number
c)an odd number
d)a number less than 3
e)a prime number
The number of times that you would expect to roll the numbers, when rolling an unbiased dice is:
a. 100 times
b. 300 times
c. 300 times
d. 200 times
e. 200 times
How to find the number of times ?There is only a single 1 in a six sided unbiased dice so the number of rolls is:
= 1 / 6 x 600
= 100 times
There are 3 even numbers ( 2, 4, and 6) so the number of rolls :
= 3 / 6 x 600
= 300 times
There are 3 odd numbers ( 1, 3, 5 ) so number of rolls is:
= 3 / 6 x 600
= 300 times
There are 2 numbers less than 3 which are 1 and 2 :
= 2 / 6 x 600
= 200 times
There are 2 prime numbers ( 2 and 3 ):
= 2 / 6 x 600
= 200 times
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Find an equation of the form y=f(x) for a curve with x-intercept 1 whose tangent line at any point (x, y) has slope xe^-y.
y=___
y = ln( [tex]\frac{x^2+1}{2}[/tex]) is the required equation.
What is x-intercept?In a graph of an equation, the x-intercept is the point at which the graph of the equation crosses the x-axis. It is the point where the y-coordinate is equal to 0. The x-coordinate of the x-intercept is the solution of the equation when y = 0.
Given that the slope at point (x,y)
and we know that slope at any find is dy/dx
so dy/dx = [tex]xe^-^y[/tex]
=> dy/[tex]e^-^y[/tex] = xdx
=> [tex]e^y[/tex] dy = x dx
intergrating both side we get:
[tex]e^y[/tex] = x²/2 + c
where c is a constant
given x intercept is 1
[tex]e^0[/tex] = 1²/2 + c
=> 1 = 1/2+c
=> c= 1/2
so [tex]e^y[/tex] = x²/2 + 1/2
taking ln on both side we get:
y = ln( [tex]\frac{x^2+1}{2}[/tex]) is the required equation.
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A circular dartboard is divided into regions with various central angles. The probability of a dart randomly landing in a particular region is 1/6. What is the corresponding measure, in degrees, of the central angle of this section of the dartboard?
The corresponding measure of the central angle of the section of the dartboard is 60 degrees.The probability of randomly landing in a particular region of a circular dartboard is 1/6.
The probability of randomly landing in a particular region of a circular dartboard is 1/6. This means that each region of the dartboard is equivalent in size, and thus has the same central angle. Since the dartboard is circular, the total measure of the central angles must add up to 360 degrees. Therefore, the measure of the central angle of each section of the dartboard is 360 divided by 6, which is equal to 60 degrees.
The corresponding measure of the central angle of the section of the dartboard is 60 degrees.The The corresponding measure of the central angle of the section of the dartboard is 60 degrees.The probability of randomly landing in a particular region of a circular dartboard is 1/6. of randomly landing in a particular region of a circular dartboard is 1/6.
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Karen divided 560.9 by 10³ and got
a quotient of 0.5609. Julio thinks the
quotient should be 5.609. Who is correct?
Explain your answer.
Karen divided 560.9 by 10³ and got a quotient of 0.5609 ,therefore he is right.
What do you mean by division?
Multiplication is the opposite of division. If 3 groups of 4 add up to 12, then 12 divided into 3 groups of equal size results in 4 in each group. Creating equal groups or determining how many people are in each group after a fair distribution is the basic objective of division.
What do you mean by quotient ?
In mathematics, the outcome of dividing two numbers is called the quotient. In other words, the result quotient is obtained by dividing a dividend by a divisor.
How to Divide a Long Number by Decimals?
Move the decimal point all the way to the right while keeping track of how many places you've moved it if the number you're dividing by has a decimal. Then, move the decimal point the same number of places to the right in the number you are dividing.Put a decimal point immediately above the one in the number under the division bar in the quotient (answer) space.Divide until the remainder equals zero or until your answer contains enough decimal points. If the remainder repeats, you can stop as well because this shows that your answer is a repeating decimal.Hence, Karen divided 560.9 by 10³ and got a quotient of 0.5609.
It is Right answer for the this division, and steps are uploaded in mage kindly see the image also.
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How long is the line of sight? Round your answer to the nearest hundredth.
Answer:
77.78 feet-----------------------
The line of sight is the hypotenuse of the 45° right triangle.
As per the property of the 45° right triangle, the length l is:
l = b√2 orl = 55×√2 ≈ 77.78 feetAnswer:77.7f
Step-by-step explanation: pythagorean theorem
55*55=3025
3025*2=6050
square root 6050=77.7
Please help me!! It is 5 questions
You prοbably know our football and basketball teams, but we have 21 Divisiοn I varsity programs that all raise the bar whenever they compete.
How many attended the Nοrth Carolina State or the Butler game?There were 465 people whο were surveyed in all.
The attendance at the FSU-Marist game was (M), n(M)=240.
The attendance at the FSU-Butler game was (B), n(B)=200.
The tοtal number οf spectators for the FSU-NC State game was n(NCS)=240.
The cοmbined attendance at the NC State game and the Marist game was n(MNCS)=90.
The cοmbined attendance at the Butler vs. NC State game was n(NCSB)=80.
The cοmbined attendance at the Butler and Marist games was n(BM)=100.
n(MBNCS)=30 peοple attended all three of the games.
When NC State's first football game was οrganised by students in 1892, the school's long histοry of intercollegiate athletics officially started.
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1,3,6,10,15,21,28 as a function
It seems that the sequence you provided is the sequence of triangular numbers. The function that generates this sequence could be defined as:
f(n) = n*(n+1)/2
Where n is the position of the number in the sequence.
So, for example:
f(1) = 1*(1+1)/2 = 1
f(2) = 2*(2+1)/2 = 3
f(3) = 3*(3+1)/2 = 6
and so on.
the sum of two consecutive integers is 65. find the two numbers
Answer:
x=32
x+1=33
Step-by-step explanation:
let the first consecutive integer be 'x'
let the second consecutive integer be 'x+1'
x+x+1=65
2x+1=65
2x=65-1
2x=64
x=64÷2
x=32
x+1=(32+1)
x+1=33
Which coordinates are solutions to the equation? Select ALL that apply.
2x−y=20
(10, 0)
(15, 10)
(5, 7)
(-4, -28)
except point (5, 7) all given coordinates are on the line.
What are coordinates?A pair of numbers called coordinates are used to locate a point or a form in a two-dimensional plane. The x-coordinate and the y-coordinate are two numbers that define a point's location on a 2D plane.
given, an equation 2x−y=20
to check what are the coordinate of the equation:
The easiest way to find out if a point falls on a specific line is to plug the first value of the point in for x and the second value for y.
Thus, For Coordinates(10, 0)
2x−y=20
=> 2 * 10 - 0 = 20
=> 20 = 20
Thus Coordinates are on the line.
Thus, For Coordinates(15, 10)
2x−y=20
=> 2 * 15 - 10 = 20
=> 30 -10 = 20
=> 20 = 20
Thus Coordinates are on the line.
Thus, For Coordinates(5, 7)
2x−y=20
=> 2 * 5 - 7 = 20
=> 3 = 20
Thus Coordinates are not on the line.
Thus, For Coordinates(-4, -28)
2x−y=20
=> 2 * -4 - (-28) = 20
=> -8 + 28 = 20
=> 20 = 20
Thus Coordinates are on the line.
Therefore, except point (5, 7) all given coordinates are on the line.
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#SPJ1
