Chronological order of transactions:
Accommodation at a rate of $100.00 CAD per night for May 12 & 13.
$15.00 movie rental charge for the afternoon of the 13th.
$40.00 room service charge for dinner on the evening of the 13th.
Mr. Ritz settling his account with his Visa card.
Hotel Guest Folio
Guest Name: Mr. Caesar Ritz
Room Number: 1010
Check-Out Date: May 14, 2023
Telephone: 905-575-1212
Fax: 905-575-2319
Guest Room Rate: $100.00 CAD per night
Chronological Order of Transactions:
May 12-13, 2023:
Accommodation at a rate of $100.00 CAD per night for May 12 & 13.
Debit: $200.00 CAD
May 13, 2023:
Afternoon movie rental charge of $15.00.
Debit: $15.00 CAD
May 13, 2023:
Room service charge for dinner of $40.00.
Debit: $40.00 CAD
May 14, 2023:
Settlement of the account with a Visa card.
Credit: $-255.00 CAD (Total charges: $200.00 + $15.00 + $40.00 = $255.00)
Balance Outstanding: $0.00 CAD
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IN MAJOR NEED OF HELP
use the formula to find the leg of the triangle below. Make sure you show you show ur work. round to the nearest tenth if needed
The value of the missing leg from the triangle that has been shown is 8 mi .
Pythagoras theoremThe Pythagorean theorem provides a way to find the length of one side of a right-angled triangle if the lengths of the other two sides are known. It is widely used in various fields, such as engineering, architecture, physics, and trigonometry, to solve problems involving right triangles and calculate distances, angles, or other related quantities.
We know that;
[tex]c^2 = a^2 + b^2\\b^2 = 10^2 - 6^2[/tex]
b = 8 mi
The Pythagorean theorem is named after the ancient Greek mathematician Pythagoras
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in triangle ABC below use a compass and straightedge to construct the altitude from c to AB
The altitude of the triangle ΔABC, can be constructed using a compass and a straight edge, using the method of constructing the perpendicular line segment from a point to a line.
How can the altitude from C to AB, be constructed?The steps to construct the altitude to a line segment AB from the point C are as follows;
Place the compass at the point A and with a radius AC, draw an arc on both sides of the segment AB, passing the point C, and intersecting the line segment AB at point DPlace the compass at the point D and with the radius AC from above draw an arc passing through the point C, and intersecting the arc drawn on the other side of the line segment AB at the point FDraw a line joining the points CF, with the straight edge, intersecting the segment AB at GThe line segment CG is the altitude from C to AB
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Consider a credit card with a balance of $7000 and an APR of 16.99% . In order to pay off the balance in 2 years, what monthly payment would you need to make? Round your answer to the nearest cent, if necessary.
To pay off the balance of $7000 on a credit card with an APR of 16.99% in 2 years, the monthly payment to be made is $349.11. So, the correct option is (a) $349.11.
What is APR?
APR stands for Annual Percentage Rate, which is the rate at which credit is issued and expressed as a yearly rate. Interest and fees are included in the APR, which makes it the most precise way to determine the actual expense of borrowing.
What is monthly payment?
A monthly payment is an amount of money that is paid to a creditor or lender every month as part of a loan or debt repayment plan. The monthly payment must be sufficient to pay off the interest accrued during the month and a portion of the principal balance to make a dent in the outstanding debt owed.
What is the formula for calculating monthly payments?
The formula for calculating monthly payments is: Monthly Payment = [APR/12 × (Present balance)] / [1 - (1 + APR/12)-n], Where APR is the Annual Percentage Rate, Present balance is the amount owed, n is the number of payments to be made. To pay off the balance of $7000 on a credit card with an APR of 16.99% in 2 years, the monthly payment to be made is $349.11. Therefore, the correct option is (a) $349.11.
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Which is the equation of a line that is parallel to the line represented by
Answer:
Last option (4th option)
Step-by-step explanation:
Parallel lines have the same slope and the only choice that has the same slope of 3/4 is the last option
The graph of y = 4x² - 4x - 1 is shown.
Use the graph to find estimates for
the solutions of
i) 4x² - 4x-3=5
ii) 4x² - 4x-1= x + 3
By using the graph the estimates for the solutions of each equation are as follows;
i) (-1, 5) and (2, 5).
ii) (-0.554, 2.446) and (1.804, 4.804).
What is a point of intersection?In Mathematics and Geometry, a point of intersection is the location on a graph where two (2) lines intersect or cross each other, which is primarily represented as an ordered pair with a point that corresponds to the x-coordinate and y-coordinate on a cartesian coordinate.
By critically observing the graph of the lines representing the given system of equations 4x² - 4x -3 = 5 and 4x² - 4x - 1 = x + 3, the solution is denoted by the point of intersection of both the x-coordinate and y-coordinate as shown in the image attached below.
4x² - 4x -3 = 5 are (-1, 5) and (2, 5).
4x² - 4x - 1 = x + 3 are (-0.554, 2.446) and (1.804, 4.804).
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Mr Tan poured 8000cm3 of water into an empty rectangular tank. the tank measured 48 cm long and 24 cm wide. Then, mrs Tan poured in some water to a depth of 20 cm. how many litres of water did mrs tan pour in
Annswer ASAP
Mrs. Tan poured in approximately 31.04 liters of water.
To find the volume of water poured by Mrs. Tan, we need to calculate the difference between the initial volume of water poured by Mr. Tan and the final volume of water in the tank.
The initial volume of water poured by Mr. Tan is given as 8000 cm³.
The dimensions of the tank are given as 48 cm (length) and 24 cm (width). The depth to which Mrs. Tan poured the water is given as 20 cm.
To calculate the final volume of water, we need to consider the additional volume poured by Mrs. Tan. This additional volume can be calculated by multiplying the area of the base (length × width) by the depth.
The area of the base = 48 cm × 24 cm = 1152 cm².
The additional volume poured by Mrs. Tan = 1152 cm² × 20 cm = 23,040 cm³.
Now, to find the total volume of water in the tank after Mrs. Tan poured the water, we add the initial volume (8000 cm³) to the additional volume (23,040 cm³):
Total volume = 8000 cm³ + 23,040 cm³ = 31,040 cm³.
Finally, to convert the volume from cm³ to liters, we divide by 1000 (since 1 liter = 1000 cm³):
Total volume in liters = 31,040 cm³ / 1000 = 31.04 liters.
Therefore, Mrs. Tan poured in approximately 31.04 liters of water.
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The histogram shows the age distribution for members in a small community band make a statement that best summarizes the data set the current peaks for gaps
A statement that best summarizes the data set is that there are outliers from age 90 - 100 years and the gap is located at the age 80 - 89 years.
What is a histogram?In Mathematics and Statistics, a histogram simply refers to a type of graph that is used for the graphical representation of a data set into user-specified ranges, especially through the use of rectangular bars.
In Mathematics and Statistics, an outlier is a number that is either unusually too little (small) or large (big) in comparison with the overall pattern of the numbers contained in a data set.
By critically observing the histogram, we can logically deduce that the peak stage occurred at an age of 50 - 59 years while the gap is located at the age 80 - 89 years.
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Missing information:
The question is incomplete and the histogram is shown in the attached picture.
Hello please answer the question below i give brainiest to the person who is correct. and 70 points thank you
Question Drag the values to order them from least to greatest, with the least at the top.Arrange responses in the correct order to answer the question. Select a response, navigate to the desired position and insert response at that position.
Answer:
I think it is √(79) + √(63) is last, √(143). 2nd , 4π 1st
I could be very wrong... Forgive me if im wrong.
Step-by-step explanation:
if your starting salary is $35,000 and you receive a %6 increase at the end of every year, what is the total amount, in dollars, you will earn over the first 16 years that you work
find the lettered angles in the diagram below and state the law
The value of angle x is 149°
What are angles on parallel lines?Angles in parallel lines are angles that are created when two parallel lines are intersected by another line called a transversal.
Since MN and OP are parallel lines, we can introduce a transverse that will cut through Q and extend the parallel lines of MN and OP
Therefore;
The adjascent angle of N will be
180-138 = 42°
This means that angle Q is divided into 42° and 31° i.e 42+31 = 73°
This means the adjascent angle of P is 31°( alternate angles)
Therefore x = 180-31
x = 149°
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how to Determine △3[(1 + x)(1 − 3x)(1 + 5x)] where the common interval length is 1.
Please help I can’t find this one out
Factor
f(x) = x2 + 2x - 35
(x+ 7) (x- [?])
Answer:
(X-5)
Step-by-step explanation:
tHANKS
For what number of students will the total cost of each field trip be the same,
and what will that cost be?
Cost (S)
100
90
80
70
60
50
40
30
20
10
Field Trip Costs
y= 25+ 3x
y=33+x
1 2 3 4 5 6 7 8 9 10
Number of students
OA. For 55 students, the cost will be the same, and the cost will be
$10.
B. For 4 students, the cost will be the same, and the cost will be $37.
C. For 37 students, the cost will be the same, and the cost will be $4.
For 37 students, the cost will be the same, and the cost will be $37 (option b).
To find the number of students for which the total cost of each field trip is the same, we need to equate the two cost equations and solve for x.
Equating the cost equations:
25 + 3x = 33 + x
Simplifying the equation:
3x - x = 33 - 25
2x = 8
Dividing both sides by 2:
x = 4
Therefore, for 4 students, the cost will be the same. To find the cost, we substitute this value of x into either of the cost equations. Let's use the second equation:
y = 33 + x
y = 33 + 4
y = 37
Hence, for 4 students, the cost will be the same, and the cost will be $37.
However, it seems there was an error in the given options. The correct answer is not provided. Let's continue solving for the correct answer.
To find the correct number of students and the corresponding cost, we can substitute different values of x into the cost equations and see where the costs are the same.
Substituting x = 1 into the cost equations:
Cost (S) = 25 + 3(1) = 28
Cost (S) = 33 + 1 = 34
Substituting x = 2 into the cost equations:
Cost (S) = 25 + 3(2) = 31
Cost (S) = 33 + 2 = 35
Substituting x = 3 into the cost equations:
Cost (S) = 25 + 3(3) = 34
Cost (S) = 33 + 3 = 36
Substituting x = 4 into the cost equations:
Cost (S) = 25 + 3(4) = 37
Cost (S) = 33 + 4 = 37
As we can see, for x = 4, the costs are the same at $37. Therefore, the correct answer is: For 4 students, the cost will be the same, and the cost will be $37.
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Compare and contrast the direct write-off method and the allowance method for bad debts.
The direct write-off method recognizes bad debts when they are specifically identified, while the allowance method anticipates and estimates potential bad debts in advance.
The direct write-off method and the allowance method are two different approaches used by businesses to account for bad debts.
While both methods are used to recognize and account for potential losses from uncollectible accounts, they differ in their timing and impact on financial statements.
The direct write-off method is a simpler approach.
Under this method, bad debts are directly written off as an expense when they are deemed uncollectible.
This means that when a specific account is identified as uncollectible, it is removed from the accounts receivable and recorded as an expense on the income statement.
The direct write-off method provides a more accurate representation of the actual loss incurred but can distort the timing of expenses since bad debts are recognized only when they are identified.
On the other hand, the allowance method takes a more proactive approach to account for potential bad debts.
This method involves estimating the amount of uncollectible accounts at the end of each accounting period and creating an allowance for doubtful accounts.
The allowance is recorded as a contra-asset account on the balance sheet, offsetting the accounts receivable.
This estimation is based on historical data, industry trends, and management's judgment.
By creating an allowance, the potential bad debts are anticipated and accounted for in advance, resulting in a more accurate matching of expenses to revenues.
The key difference between the two methods lies in the timing of expense recognition.
The direct write-off method recognizes bad debts only when they are identified, which can result in delayed recognition.
In contrast, the allowance method anticipates potential bad debts and recognizes them in advance, providing a more accurate representation of the financial position.
However, the allowance method requires estimation and judgment, which may introduce subjectivity and potential errors.
In summary, the direct write-off method recognizes bad debts when they are identified, while the allowance method estimates and anticipates potential bad debts.
The direct write-off method provides accuracy in expense recognition but can lead to delayed recognition, while the allowance method allows for better matching of expenses to revenues but requires estimation and introduces subjectivity.
The choice between the two methods depends on the nature of the business and its preference for accuracy or timeliness in recognizing bad debts.
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Find the length of the base of a square pyramid if the volume is 1024 cubic inches and has a height if 12 inches
Answer:
Step-by-step explanation:
Let 's x the length of the pyramid:
V=x²*h/3
V=1024 and h=12
So x²*12/3=1024
==>x²=1024*3/12
==>x²=256
==>x²=16²
==> x=16 for (x=-16 must be exclude <0)
......brainpower pts pls
On a coordinate plane, point A is 4 units down. Point B is 8 units to the left and 7 units down.
Which statements are true about the locations of points A and B? Select all that apply.
Point A is at (0, –2).
Point A is at (0, –4).
Point A is at (–4, 0).
Point B is at (–4, –3).
Point B is at (–8, –6).
Point B is at (–8, –7).
Answer:
Point A is at (0, –4).
Point B is at (–8, –7).
Step-by-step explanation:
point A is 4 units down : y = –4
Point B is 8 units to the left : x = –8
and 7 units down: y = –7
A : (0, –4)
B : ( –8, –7)
Help fast
Line d is parallel to line c in the figure below.
Parallel lines d and c are intersected by lines q and p to form 2 triangles. At lines d and p, the angle is 2, at d and q, the angle is 1, and at q and p the angle is 3. At lines c and q, the angle is 4, at p and c, the angle is 5, and the third angle is 6.
Which statements about the figure are true? Select three options.
Vertical angles prove that Angle 2 is congruent to angle 5.
In the two similar triangles, Angle 1 and Angle 4 are alternate interior angles.
Vertical angles prove that Angle 3 is congruent to angle 6.
The triangles are similar because alternate interior angles are congruent.
In the two similar triangles, Angle 2 and Angle 4 are corresponding angles.
The triangles are similar because corresponding sides are congruent.
The correct statements about the figure are:
(B) In the two similar triangles, Angle 1 and Angle 4 are alternate interior angles.
(C) Vertical angles prove that Angle 3 is congruent to Angle 6.
(D) The triangles are similar because alternate interior angles are congruent.
How to explain the informationVertical angles are formed when two lines intersect, and they are always congruent.In the two similar triangles, Angle 1 and Angle 4 are alternate interior angles.
Similarly, vertical angles are formed when two lines intersect, and they are always congruent. Here, vertical angles are Angle 3 and Angle 6, which means they are equal.
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A multidose vial of Oxacillin 2 g is reconstituted with 8 mL of bacteriostatic water to yield 250 mg/mL. How many mL of the medication should be given if the patient is prescribed 500 mg of the medication?
Therefore, 2 mL of the medication should be given if the patient is prescribed 500 mg.
How to find the volumeTo determine the volume of the medication to be given, we can set up a proportion using the concentration provided.
Given:
Reconstituted concentration: 250 mg/mL
Prescribed dosage: 500 mg
Let's assume the volume to be given is "x" mL.
We can set up the following proportion
250 mg/1 mL = 500 mg/x mL
To solve for "x," we can cross-multiply and solve the equation:
250x = 500 * 1
250x = 500
x = 500/250
x = 2
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It's my last question please help
Suppose a b i n o m i a l trial has a probability of success of 0.2, and 75 trials are performed. What is the standard deviation of the possible outcomes? Round your answer to two decimal places.
The standard deviation of the possible outcomes is approximately 3.46.
To calculate the standard deviation of the possible outcomes in a binomial trial, we use the formula:
σ = sqrt(n * p * (1 - p))
where σ is the standard deviation, n is the number of trials, and p is the probability of success.
In this case, the probability of success is 0.2, and the number of trials is 75. Plugging these values into the formula, we have:
σ = sqrt(75 * 0.2 * (1 - 0.2))
= sqrt(75 * 0.2 * 0.8)
= sqrt(12)
Evaluating the square root of 12, we find:
σ ≈ 3.464
Rounding to two decimal places, the standard deviation of the possible outcomes in this binomial trial is approximately 3.46.
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Given the individual rates of workers, to find the combined rate of all the individuals working together you must
the individual rates.
Fill in the blank
To find the combined rate of all the individuals working together, you must add the individual rates.
How to calculate combined rate of individuals working together?When calculating the combined rate of individuals working together, you need to add up the individual rates. Each worker contributes their own rate of work or productivity, and by adding these rates together, you can determine the combined rate at which they are working collectively.
This allows you to assess the overall efficiency and output of the team or group. By summing up the individual rates, we have better understanding of the overall productivity and performance of the group.
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Choose the graph that represents the following systems of any qualities Y is less than or equal to negative 3X plus one Y is less than or equal to 1/2 X +3 and each graph. The area for f(x) is shaded and labeled a the area for G(x) is shaded label B , and the area where they have shading in common is labeled AB
The solutions to the two inequalities is (-0.5, 2.5) as shown in the attached graph.
How to interpret the graph of the Inequality?The inequalities we have are given as:
y ≤ −3x + 1
y ≤ x + 3
Step1 : Remove the inequalities
This gives us:
y = −3x + 1
y = x + 3
Step2 : Finding intersection points of equations
x + 3 = -3x + 1
4x = -2
x = -0.5
Plug in -0.5 for x in the second equation to get:
y = -0.5 + 3
y = 2.5
Thus, intersection point is: (-0.5, 2.5)
Step 3: Test of origin (0,0)
If inequalities holds true for origin then, shades the graph towards the origin.
For equation 1.
y = −3(0) + 1
y = 1
0 ≤ 1
True, Shade graph towards origin.
For equation 2.
y = x + 3
y = 0 + 3
y = 3
0 ≤ 3
True, Shade graph towards origin.
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Complete question is:
Choose the graph that represents the following system of inequalities:
y ≤ −3x + 1
y ≤ x + 3
In each graph, the area for f(x) is shaded and labeled A, the area for g(x) is shaded and labeled B, and the area where they have shading in common is labeled AB.
In a class, 20% of the students are female and 60% of the students are willing to take Math for business next semester. Assume that the gender and the will to take the Math for business course are independent. We select 10 students randomly and independently. What is the probability that four students from the 10 students are females or four students from the 10 students would like to take Math for Business next semester?
The probability that either four students out of the 10 students are females or four students outof the 10 students would like to take Math for Business next semester is approximately 0.206 or 20.6%.
How is this so ?The probability of Event A (Four students are females) can be calculated as follows -
P(A) = (0.2)⁴ * (0.8)⁶ * (10 C 4)
= 0.0016 * 0.4096 * 210
≈ 0.135
The probability of Event B (Four students would like to take Math for Business) can be calculated as follows:
P(B) = (0.6)⁴ * (0.4)⁶ * (10 C 4)
= 0.1296 * 0.0256 * 210
≈ 0.071
To calculate the probability of either Event A OR Event B occurring,we sum the probabilities:
P(A or B) = P(A) + P(B)
≈ 0.135 + 0.071
≈ 0.206
Hence, the probability that either four students out of the 10 students are females or 4students out of the 10 students would like to take Math for Business next semester is approximately 0.206 or 20.6%.
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Geometry
Do it right
Answer:
x = 26
Step-by-step explanation:
sum of consecutive interior angles is 180
2(x + 15) + (3x + 20) = 180
2x + 30 + 3x = 160
5x = 130
x = 26
Answer:
value of x is 26.
Step-by-step explanation:
Given:
2(x+15)°+(3x+20)°=180°
Since the sum of angle of co interior angle is supplementary.
Solving for x.
2(x+15)°+(3x+20)°=180°
opening bracket2x+30+3x+20=180
Solving like terms5x+50 =180
Subtracting both side by 50.5x=180-50
5x=130
dividing both side by 5.x=130/5
x=26
Therefore value of x is 26.
Alewuya invests a total of $18,000 in two accounts paying 11% and 10% simple interest, respectively. How much was invested in each account if, after one year, the total interest was $1,920.00. A) Enter an equation that uses the information as it is given that can be used to solve this problem. Use x as your variable to represent the amount of money invested in the account paying 11% simple interest. Equation: B) The answers are: $ was invested at 11% and was invested at 10%.
Answer:
$12000 was invested at 11% and $6000 was invested at 10%
Step-by-step explanation:
Total invested amount is 18000
Let the amount of money invested in the account paying 11% be x
Let the amount of money invested in the account paying 10% be y
⇒ x + y = 18000
⇒ y = 18000 - x
Simple interest = PNR
where P is the amount invested, N is the number of years and R is the rate of interest
For the account paying 11%,
SI₁ = x(1)(11%) = x(11%)
For the account paying 10%,
SI₂ = y(1)(10%)
= (18000 - x)(10%)
= 18000(10%) - x(10%)
= 1800 - x(10%)
Total Interest = SI₁ + SI₂
⇒ 1920 = x(11%) + 1800 - x(10%)
⇒ 1920 - 1800 = x(11% - 10%)
⇒ 120 = x(1%)
⇒ [tex]\frac{x}{100}[/tex] = 120
⇒ x = 120*100
⇒ x = 12000
y = 18000 - x
⇒ y = 18000 - 12000
⇒ y = 6000
$12000 was invested at 11% and $6000 was invested at 10%
Answer: $12,000 at 11%, $6,000 at 10%.
Step-by-step explanation:
Firstly, you would identify the two interest rates as variables.
Assign variable X to the amount invested at 11% and variable Y to the amount invested at 10%. Using those two variables assigned to our interest rates, equate those to the principle of $18,000. After that, multiply the variables by the given interest rates and equate that to the total interest.
x + y = $18,000
0.11x + 0.1y = $1,920
Solve the first equation for Y, multiplying by 100 to even out decimals.
x + y = $18,000
y = $18,000 - x
11x + 10y = $192,000
11x + 10($18,000 - x) = $192,000
11x + $180,000 - 10x = $192,000
x + $180,000 = $192,000
x = $12,000
With that, we now know that the original principle for the 11% interest rate is $12,000, which when subtracted from the total principle of $18,000 gives us the interest rate for the 10% investment as well
$18,000 - $12,000 = $6,000
So, with a total Principle of $18,000, two accounts with interest rates of 11% and 10% respectively, and a total interest accumulation of $1,920, we can gather that the account with an 11% interest rate originally had $12,000 and the account with the 10% interest rate originally had $6,000.
Write down the first two terms and the 5th term of the following series (i) nothing term=25(2/3)n ii) nth term =3(n-1)²
i. The first two terms of the series are 50/3 and 100/9, and the fifth term is 800/243.
ii. the first two terms of the series are 0 and 3, and the fifth term is 48.
Calculating nth term of a sequence(i) The formula for the nth term of the series is given by:
nothing term = 25(2/3[tex])^n[/tex]
first two terms, substitute n=1 and n=2 into the formula
1st term = [tex]25(2/3)^1 = 25(2/3) = 50/3[/tex]
2nd term = [tex]25(2/3)^2 = 25(4/9) = 100/9[/tex]
To find the fifth term, substitute n=5 into the formula
Fifth term: nothing term = 25(2/3[tex])^5[/tex] = 25(32/243) = 800/243
Hence, the first two terms of the series are 50/3 and 100/9, and the fifth term is 800/243.
(ii) The formula for the nth term of the series is given by:
nth term = [tex]3(n-1)^2[/tex]
To find the first two terms, we can substitute n=1 and n=2 into the formula
First term= [tex]3(1-1)^2 = 3(0)^2 = 0[/tex]
Second term= [tex]3(2-1)^2 = 3(1)^2 = 3[/tex]
To find the fifth term, we can substitute n=5 into the formula:
Fifth term: nth term = 3(5-[tex]1)^2[/tex] = 3(16) = 48
Thus, the first two terms of the series are 0 and 3, and the fifth term is 48.
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All changes saved
2. What will the coordinates of Triangle RST be after it is translated 4 units right and 3 units up? Type your answer in as a coordinate pair (xy)
for each point.
Enter your answer and also provide a 1 sentence explanation that describes how you determined your answer. Review the rubric below to
see how you will be evaluated.
The coordinates of the triangle after the translation are given as follows:
R'(0, 5), S'(7, 8), T'(0, -1).
What are the translation rules?The four translation rules are defined as follows:
Left a units: x -> x - a.Right a units: x -> x + a.Up a units: y -> y + a.Down a units: y -> y - a.The figure is translated 4 units right and 3 units up, hence the rule is given as follows:
(x, y) -> (x + 4, y + 3).
The original coordinates are given as follows:
R(-4,2), S(3,5) and T(-4,-4).
Hence the translated coordinates are given as follows:
R'(0, 5), S'(7, 8), T'(0, -1).
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what is the value of x in the figure shown below?
Answer:
We have parallelogram ABCD, with BC as the diagonal, so alternate interior angles are congruent.
100° + 30° + x = 180°, so x = 50°
Question #5
Find the measure of the indicated angle.
140°
150°
130°
86°
E
N
Bal
D
154°
Answer:
the answer is 150 degrees because it is the biggest
According to a survey, 72% of high school students plan to attend college. Suppose 19 high school students are
randomly selected. (round all answers to four decimal places)
a.) Find the probability that all of them plan to attend college.
b.) Find the probability that exactly eleven of them plan to attend college.
c.) Find the probability that at most fourteen of them plan to attend college.
d.) Find the probability that at least seventeen of them plan to attend college.
Alright, let's take this for a spin! We're gonna be using the binomial probability formula, which is kind of like a recipe to calculate the likelihood of something happening a specific number of times. The formula looks like this:
P(x; n, p) = C(n, x) * (p^x) * ((1 - p)^(n-x))
Where:
- P(x; n, p) is the probability of getting x successes in n trials,
- C(n, x) is the combination of n items taken x at a time (how many different ways we can get x successes),
- p is the probability of success on an individual trial (in this case, the chance a random student plans to go to college),
- x is the number of successes we want,
- n is the total number of trials (students),
- and (1 - p) is the probability of failure (a student not planning to go to college).
For all these problems, n = 19 (our number of students), and p = 0.72 (the percentage of students planning to go to college).
a.) To find the probability that all 19 students plan to attend college, we'd set x = 19. We plug in these values:
P(19; 19, 0.72) = C(19, 19) * (0.72^19) * ((1 - 0.72)^(19-19))
= 1 * (0.72^19) * (0.28^0)
= 0.72^19
= 0.0001 (rounded to four decimal places)
b.) Now, for the probability that exactly eleven of them plan to attend college, we set x = 11:
P(11; 19, 0.72) = C(19, 11) * (0.72^11) * ((1 - 0.72)^(19-11))
= 75582 * (0.72^11) * (0.28^8)
= 0.1013 (rounded to four decimal places)
c.) For the probability that at most fourteen of them plan to attend college, we need to add up the probabilities for x = 0 through 14:
P(x ≤ 14; 19, 0.72) = ∑ P(i; 19, 0.72) for i = 0 to 14
Calculating this might take a while by hand, so I'd recommend using a binomial distribution calculator. Doing so gives us approximately 0.5745.
d.) Finally, for the probability that at least seventeen of them plan to attend college, we add up the probabilities for x = 17, 18, and 19:
P(x ≥ 17; 19, 0.72) = P(17; 19, 0.72) + P(18; 19, 0.72) + P(19; 19, 0.72)
Again, I'd suggest a binomial distribution calculator for this. The result should be around 0.0258.
So, yeah, that's the way the cookie crumbles! Hope this helps you out, fam!