The particle is at rest at t = 3. Therefore, the particle is at rest at t = 2 and t = 3.
To find when the particle is at rest, we need to find the values of t where the velocity of the particle is zero.
The velocity function is obtained by taking the derivative of the position function: v(t) = x'(t) = x²(t) - 5x(t) + 6
Setting v(t) = 0, we get a quadratic equation in x(t): x²(t) - 5x(t) + 6 = 0. Factoring the quadratic, we get: (x(t) - 2)(x(t) - 3) = 0
Therefore, x(t) = 2 or x(t) = 3. We now need to check which values of t correspond to these values of x(t).
At x(t) = 2, we get: v(t) = x²(t) - 5x(t) + 6 = 4 - 10 + 6 = 0. Thus, the particle is at rest at t = 2. At x(t) = 3, we get: v(t) = x²(t) - 5x(t) + 6 = 9 - 15 + 6 = 0
Thus, the particle is at rest at t = 3. Therefore, the particle is at rest at t = 2 and t = 3.
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A construction company makes cement stairs from a wooden mold. The construction company must calculate the volume of the mold to determine how much cement they need to create the stairs. What is the volume of the wooden mold?
If the mold is not a rectangular prism, then the formula for its volume will be different, depending on its shape.
How to calculate the volume of the wooden mold?To calculate the volume of the wooden mold, we need to know its dimensions. Let's assume that the mold is in the shape of a rectangular prism, with length (L), width (W), and height (H).
Then, the volume (V) of the wooden mold is given by the formula:
V = L x W x H
To find the values of L, W, and H, the construction company needs to measure the dimensions of the mold using a measuring tape or ruler. Once they have the measurements, they can plug them into the formula above to find the volume of the mold.
It's important to note that the units of measurement used for the dimensions of the mold should be consistent. For example, if the length and width are measured in feet, then the height should also be measured in feet, and the resulting volume will be in cubic feet.
If the mold is not a rectangular prism, then the formula for its volume will be different, depending on its shape.
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Math is not my best subject
The values are,
x = 15[tex]\sqrt{2}[/tex]([tex]\sqrt{2}[/tex] -1)/2
y = 15([tex]\sqrt{2}[/tex] -1)/2
z = 15
Labelling the given figure;
In ΔABC
Cos 60 = (y + z)/15[tex]\sqrt{2}[/tex]
⇒y + z = 15[tex]\sqrt{2}[/tex]/2 ....(i) (since cos 60 = 1/2)
In ΔADC
sin 45 = z/15[tex]\sqrt{2}[/tex]
⇒ z = 15 ....(ii) (since sin45 = 1/[tex]\sqrt{2}[/tex])
Now from (i) and (ii)
y = 15([tex]\sqrt{2}[/tex] -1)/2
In ΔABD
Sin 45 = y/x
⇒ 1/[tex]\sqrt{2}[/tex] = (15([tex]\sqrt{2}[/tex] -1)/2)/x
⇒ x = 15[tex]\sqrt{2}[/tex]([tex]\sqrt{2}[/tex] -1)/2
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If Mikal uses all his money to buy one type of flour, he has exactly enough money to buy either 12 pounds of wheat flour, or 6 pounds of rice flour, or 4 pounds of almond flour. If Mikal uses all his money to buy an equal number of pounds of all three types of flour, what is the total number of pounds of flour that he can buy?
The total number of pounds of flour he can buy is 7 pounds of flour
Let's assume that Mikal has $1 to spend on flour. According to the problem, he can buy:
- 12 pounds of wheat flour for $1, which means that the price of wheat flour is 1/12 = $0.0833 per pound.
- 6 pounds of rice flour for $1, which means that the price of rice flour is 1/6 = $0.1667 per pound.
- 4 pounds of almond flour for $1, which means that the price of almond flour is 1/4 = $0.25 per pound.
If Mikal spends $1 on an equal amount of all three types of flour, he will spend $1/3 = $0.3333 on each type of flour. To determine how many pounds of each type of flour he can buy, we need to divide $0.3333 by the respective price per pound of each type of flour:
- Wheat flour: $0.3333 / $0.0833 per pound = 3.9996 pounds (rounded to 4 pounds)
- Rice flour: $0.3333 / $0.1667 per pound = 1.9998 pounds (rounded to 2 pounds)
- Almond flour: $0.3333 / $0.25 per pound = 1.3332 pounds (rounded to 1 pound)
Therefore, Mikal can buy 4 pounds of wheat flour, 2 pounds of rice flour, and 1 pound of almond flour with $1. The total number of pounds of flour he can buy is:
4 + 2 + 1 = 7 pounds of flour.
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PLEASE HELP ME 20 BRAINLEIST
Abdul flips a weighted coin 64 times and gets 16 tails. Based on experimental probability, how many of the next 40 flips should Abdul expect to come up tails?
Based on experimental probability, Abdul should expect 10 tails in the next 40 flips.
The experimental probability of getting tails is calculated as the ratio of the number of tails obtained in the experiment to the total number of coin flips.
In this case, the experimental probability of getting tails is 16/64, which simplifies to 1/4 or 0.25.
This means that in the long run, we would expect approximately 25% of coin flips to result in tails.
To determine how many of the next 40 flips Abdul should expect to come up tails based on experimental probability,
we can multiply the experimental probability by the total number of flips.
Abdul should expect 0.25 × 40 = 10 tails in the next 40 flips.
Experimental probability of getting tails = Number of tails obtained / Total number of coin flips
Experimental probability of getting tails = 16/64
Experimental probability of getting tails = 0.25 or 25%
Expected number of tails in the next 40 flips = Experimental probability of getting tails × Total number of flips
Expected number of tails in the next 40 flips = 0.25×40 = 10 tails
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James bought a cabinet for $438. 0. The finance charge was $49 and she paid for it over 18 months.
Use the formula Approximate APR =(Finance Charge÷#Months)(12)Amount Financed
to calculate her approximate APR.
Round the answer to the nearest tenth.
1. 6%
1. 7%
7. 4%
7. 5% ← correct answer
The approximate APR for James' cabinet purchase can be calculated using the formula Approximate APR = (Finance Charge ÷ #Months) (12) ÷ Amount Financed. Plugging in the given values, we get (49 ÷ 18) (12) ÷ 438 = 0.0397 or 3.97%. Rounded to the nearest tenth, the approximate APR is 4%.
APR, or Annual Percentage Rate, is the annual interest rate charged by a lender for borrowing money. It includes not only the interest rate but also any additional fees or charges associated with the loan. The APR helps borrowers compare different loan offers and understand the true cost of borrowing.
It is important to note that the APR is an approximation and may differ from the actual interest rate charged over the life of the loan, especially if the loan has variable rates or fees. When considering a loan, it is important to compare not just the APR but also the terms and conditions of the loan, such as the repayment period, monthly payments, and any penalties for early repayment.
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2) The President asks you to find the equilibrium level of output for the economy. Suppose you are given that government spending is $10000, investment is $7500, autonomous spending is $2000, the marginal propensity to consume is. 8, and, finally, the level of net exports is -$1000. Now, suppose exports grow by $1000 (Net exports are now $0. ), What would be the equilibrium level of output? What was the multiplier in this case?
The equilibrium level of output in the economy can be calculated using the following formula:
Y = C + I + G + NX
Where:
Y = Equilibrium level of output
C = Consumption
I = Investment
G = Government spending
NX = Net exports
We can calculate consumption using the marginal propensity to consume (MPC) and autonomous spending (A):
C = MPC(Y - T) + A
Where:
T = Taxes (assumed to be 0 in this case)
Substituting in the given values:
C = 0.8(Y - 0) + 2000
C = 0.8Y + 2000
Substituting in the given values for investment, government spending, and net exports:
Y = 0.8Y + 2000 + 7500 + 10000 - 1000
Y = 0.8Y + 19500
Solving for Y:
0.2Y = 19500
Y = 97500
Therefore, the equilibrium level of output in the economy is $97,500.
If net exports increase by $1000, then the new value of net exports (NX) is 0.
Substituting the new value of NX into the formula:
Y = 0.8Y + 2000 + 7500 + 10000 - 0
Y = 0.8Y + 19500
Solving for Y:
0.2Y = 19500
Y = 97500
Therefore, the equilibrium level of output in the economy is still $97,500.
The multiplier is calculated as:
Multiplier = 1 / (1 - MPC)
Substituting in the value of MPC:
Multiplier = 1 / (1 - 0.8)
Multiplier = 5
Therefore, the multiplier in this case is 5.
How to find the area of a tier
_________________________________
A = L × B × H = 22ft × 4ft × 6ft = 528ft²_________________________________
P is directly proportional to (q+2)2
when q = 1, p = 1.
find p when q = 10.
P = 16 when q = 10 because P is directly proportional to (q+2)^2 and k = 1/9 was found by P = 1 when q = 1.
How to find value the of P?If P is directly proportional to (q+2)^2, we can write this as:
P = k(q+2[tex])^2[/tex]
where k is a constant of proportionality.
To find the value of k, we can use the given condition that when q = 1, P = 1:
1 = k(1+2[tex])^2[/tex]
1 = k(3[tex])^2[/tex]
1 = 9k
k = 1/9
Now we can use this value of k to find P when q = 10:
P = (1/9)(10+2[tex])^2[/tex]
P = (1/9)(12[tex])^2[/tex]
P = (1/9)(144)
P = 16
The reason for this answer is based on the given information that P is directly proportional to (q+2[tex])^2[/tex]. Using the proportionality constant k, which was determined by the condition that P = 1 when q = 1.
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You have a second job that pays $8.50/hr and your deductions are fica ((7.65%), federal tax withholding (11.25%),and tax withholding (7.25%). If you want to save $220/month), how many many hours do you need to work at your second job? (Remember to round up to the nearest whole hour.)
To save $220 per month while working a job that pays $8.50 per hour with deductions of 26.15%, you would need to work approximately 43 hours per month, rounded up to the nearest whole hour.
To calculate how many hours you would need to work, you need to first determine your hourly pay after deductions. To do this, subtract the percentage of deductions (26.15%) from 100% (100% - 26.15% = 73.85%). Then, multiply your hourly rate by this percentage to get your effective hourly rate after deductions: $8.50 x 0.7385 = $6.27.
To save $220 per month, you need to earn at least $220 more than your expenses from your second job. Assuming a 4-week month, your expenses would need to be at most $55 per week ($220/4 weeks = $55/week).
To earn $55 per week, you need to work for $55/$6.27 = 8.77 hours per week. Rounded up to the nearest whole hour, you would need to work approximately 9 hours per week.
Multiplying this by 4 weeks gives you a total of 36 hours. However, since you need to earn slightly more than $55 per week to account for taxes and rounding, you would need to work approximately 43 hours per month.
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Question 15 (5 points) Which of the following is true of (1, 4) and (1, −7)? Question 15 options: More information is needed to determine the relationship between the two points. The points lie on a diagonal line. The points lie on a horizontal line. The points lie on a vertical line.
The two supplied points (1, 4) and (1, −7), have identical x-values. These would create a vertical line if graphed, then joined.
Explain about solutions of equation of line:The points where the lines representing the intersections where the two linear equations intersect are referred to as the solution of a linear equation.
In other words, the set of all feasible values for the variables that satisfy the specified linear equation constitutes the solution set of a system of linear equations.When the graphs cross at a particular point, a system of linear equations does indeed have a single solution. No answer. So when graphs are parallel, an equation system with linear components cannot be solved.Given that:
Line has points: (1, 4) and (1, −7).
The two supplied points have identical x-values. These would create a vertical line if graphed, then joined.
The diagram is attached:
Hence, a vertical line would be formed by the points.
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Complete question:
Which of the following is true of (1, 4) and (1, −7).?
options:
More information is needed to determine the relationship between the two points. The points lie on a diagonal line. The points lie on a horizontal line.The points lie on a vertical line.a research methods professor creates a computer tutor to help students understand confounding and obscuring variables. before the second exam in the class, volunteers are randomly assigned to either interact with the computer tutor on the materials or to play angry birds on the computer for an equivalent time (30 minutes). although the students in the tutor group do significantly better on the exam the following day, many of the practice questions from the tutor are exactly the same as those on the exam. what is the main threat to concluding that the tutor was effective?
The main threat to concluding that the tutor was effective in helping students understand confounding and obscuring variables is the issue of 'practice effects'.
Practice effects occur when exposure to specific materials or questions during a study can artificially inflate performance on subsequent measures, such as an exam.
In this case, if the practice questions from the tutor were exactly the same as those on the exam.
Then the students who interacted with the tutor may have had an advantage on the exam .
Due to familiarity with the questions rather than a true understanding of the material.
The use of the same practice questions in the tutor and on the exam .
It represents a potential confounding variable that could affect the interpretation of the results.
It is possible that the tutor may have been effective.
But it is also possible that the practice effect of the repeated questions contributed to the observed improvement in performance.
Future research could use different practice questions in the tutor and on the exam.
Use a different exam altogether to assess performance.
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Nolan ordered a set of beads. He received 86 beads in all. 43 of the beads were orange. What percentage of the beads were orange?
50% of the beads Nolan received were orange.
To find the percentage of beads that were orange, we need to divide the number of orange beads by the total number of beads and then multiply by 100.
Percentage of orange beads = (Number of orange beads / Total number of beads) * 100
In this case, Nolan received a total of 86 beads, and 43 of them were orange.
Percentage of orange beads = (43 / 86) * 100
Calculating this expression:
Percentage of orange beads = 0.5 * 100
Percentage of orange beads = 50%
Therefore, Out of total number of beads Nolan received, 50% were orange.
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there are 882 plastic beads and 18 metal beads on clearance. What percentage of the beads on clearance are plastic? Write your answer using a percent sign (%).
The percentage of plastic beads on clearance is 98.99%.
What percent of the clearance beads are plastic, if there are 882 plastic beads and 18 metal beads? express your answer in percent sign (%)?To calculate the percentage of plastic beads on clearance, you need to divide the number of plastic beads by the total number of beads and then multiply by 100 to get the percentage.
In this case, the total number of beads on clearance is the sum of plastic beads and metal beads:
In this question, you are given the number of plastic beads and metal beads on clearance, and you are asked to find the percentage of plastic beads.
To do this, you need to calculate the total number of beads on clearance by adding the number of plastic beads and the number of metal beads.
Once you have the total number of beads, you can find the percentage of plastic beads by dividing the number of plastic beads by the total number of beads.
And then multiplying by 100 to convert the answer into a percentage. This formula can be expressed as:
Percentage of plastic beads = (Number of plastic beads / Total number of beads) x 100%
Plugging in the given values, we get:
Total number of beads = 882 + 18 = 900
Percentage of plastic beads = (882 / 900) x 100% = 98.99%
So, the answer is that 98.99% of the beads on clearance are plastic.
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if y varies inversely as x and y = 18 when x = 1/2 then find x when y = -10
The value of x in the variation is -2/9
How to solve the variation?y varies inversely as x and the value of y is 18 and x is 1/2
the first step is to calculate the constant k
k= y/x
k= 18 ÷ 1/2
k= 18 × 2/1
k= 36
From the calculation above the value of k which is the constant is 36
The next step is to calculate x. The value of x can be calculated as follows
k = y/x
36= -10/x
cross multiply
36x= -10
x= -10/36
x= -2/9
Hence the value of x in the variation is -2/9
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Please help me with this
Answer:
B f(x)=1(8)^x
Step-by-step explanation:
1 is the 0 value, you can see it's exponential by the rapid growth and how it grows by a lot each time
Find the coordinates of the absolute extrema for f(x) on the closed interval [-4, 4]
x^3 - 3x^2 - 9x + 20
The coordinates of the absolute maximum point are (4, 24), and the coordinates of the absolute minimum point are (-4, -8).
To find the absolute extrema of the function[tex]f(x) = x^3 - 3x^2 - 9x + 20[/tex] on
the closed interval [-4, 4], we need to find the maximum and minimum
values of the function within the given interval.
Find the critical points of the function f(x) within the interval [-4, 4].
To find the critical points, we need to take the first derivative of the
function and set it equal to zero.
[tex]f(x) = x^3 - 3x^2 - 9x + 20[/tex]
[tex]f'(x) = 3x^2 - 6x - 9[/tex]
Setting f'(x) = 0, we get:
[tex]3x^2 - 6x - 9 = 0[/tex]
Dividing both sides by 3, we get:
[tex]x^2 - 2x - 3 = 0[/tex]
Factoring the quadratic equation, we get:
(x - 3)(x + 1) = 0
So, the critical points of the function within the interval [-4, 4] are x = -1 and x = 3.
Find the values of the function at the critical points and at the endpoints
of the interval [-4, 4].
To find the values of the function at the critical points and at the
endpoints of the interval, we evaluate the function at each of these
values.
f(-4) = -8
f(4) = 24
f(-1) = 24
f(3) = 2
Compare the values obtained in step 2 to find the maximum and minimum values of the function.
The maximum value of the function is 24, which occurs at x = -1 and x = 4.
The minimum value of the function is -8, which occurs at x = -4.
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You dog just had a litter of 9 puppies. Your mom is going to let you keep 2 of them. How many possible outcomes are there?
In a game, each player receives 7 cards from a deck of 52 different cards. How many different groupings of cards are possible in this game?
How many possible outcomes are there for a 4 digit ATM pin if the first number must be a 5?
How many three letter arrangements can be made from the letters in the word ocean?
Puppy outcomes: 36. Card groupings: 133,784,560. 5-digit PINs: 1,000. Three-letter arrangements: 24.
How many possible outcomes?
a) For the puppies, you have 9 choices for the first puppy and 8 choices for the second puppy. However, since the order in which you choose them does not matter (e.g., getting puppy A first and then puppy B is the same as getting puppy B first and then puppy A), we need to divide by the number of ways to arrange 2 items, which is 2! (2 factorial). Therefore, the number of possible outcomes is 9 * 8 / 2! = 36.
b) For the card game, each player receives 7 cards from a deck of 52 cards. The number of different groupings of cards can be calculated using combinations. The formula for combinations is nCr = n! / (r!(n-r)!), where n is the total number of cards (52) and r is the number of cards each player receives (7). Plugging in the values, we get 52C7 = 52! / (7!(52-7)!) = 133,784,560.
c) For the 4-digit ATM pin, the first number must be 5. The remaining three digits can be chosen from the numbers 0-9, excluding 5 (since it has already been chosen for the first digit). Therefore, there are 9 choices for the second digit, 10 choices for the third digit, and 10 choices for the fourth digit. Multiplying these choices together, we get 9 * 10 * 10 = 900 possible outcomes.
d) For the three-letter arrangements from the word "ocean," we have 5 letters to choose from. The first letter can be any of the 5 letters, the second letter can be any of the remaining 4 letters, and the third letter can be any of the remaining 3 letters. Multiplying these choices together, we get 5 * 4 * 3 = 60 possible arrangements.
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on stats-2, run an anova to see if there is a significant difference in whether or not customers purchase a bike depending on their career type. what can you conclude from the results assuming that the data is a valid representation of the total population of potential bike customers?
The first option is correct. There is no significant difference in the purchasing patterns across career types
How is a data valid representation of the total populationIn order for a dataset to be a valid representation of the total population, it needs to be collected in a way that ensures that it is a fair and accurate sample of the population.
One way to ensure this is through random sampling, where individuals are selected to participate in the study without any bias or preconceived notions about their characteristics. This helps to reduce the potential for selection bias and ensures that the sample is representative of the larger population.
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2. Fiona is studying how income taxes impact various families and their finances. She creates a table with various amounts of taxes owed and estimates
that this represents 9% of each family's gross income.
Solve for the gross income for each family based off of their taxes owed.
The equation is Gross Income = Taxes Owed / 0.09.
To solve for the gross income for each family based on their taxes owed and the fact that this represents 9% of each family's gross income, follow these steps:
1. Write the equation: Taxes Owed = 0.09 * Gross Income
2. Rearrange the equation to solve for Gross Income: Gross Income = Taxes Owed / 0.09
3. Substitute the Taxes Owed value for each family into the equation and calculate their Gross Income.
For each family, input their taxes owed into the equation and you will find their gross income. Remember, the equation is Gross Income = Taxes Owed / 0.09.
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Which is the explicit equation that starts at x=0 for the sequence 7, 10, 13,
16,.
1 point
Of(x) = 7x + 3
f(x) = 7(x+1) + 10
Of(x) = 3x + 7
f(x) = 3(x+1)+7
The explicit equation for the sequence 7, 10, 13, 16,... is an = 7 + 3n.
To find the explicit equation for the sequence 7, 10, 13, 16,..., we first need to identify the common difference.The common difference is the difference between any two consecutive terms in the sequence.
In this case, the common difference d is 10 - 7 = 3, 13 - 10 = 3, 16 - 13 = 3, and so on.
Next, we can use the formula for the nth term of an arithmetic sequence to find the explicit equation. The formula is:
an = a1 + (n - 1)d
where,
an = the nth term of the sequence
a1 = the first term of the sequence
d = the common difference
n = the number of the term we want to find
Since the sequence starts at x=0, we can rewrite the formula as: an = a0 + nd,
where a0 = 7 and d = 3.
Therefore, the explicit equation for the sequence is an = 7 + 3n
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the diameter of the cylinder is 6 meters the height of the cylinder is 12 meters what is the volume
Answer:V≈339.29m³
Step-by-step explanation:
V=π(d
2)2h=π·(6
2)2·12≈339.29201m³ Pls if you can answer my question if you have txvs.
Why couldn’t Anybody see Ms Applebees apple?
Ms. Applebee's apple is because they lacked the necessary human capital to understand the play on words.
To begin with, let's define what we mean by capital. In economics, capital refers to any resource that can be used to produce goods or services. This can include physical capital, such as machinery and equipment, as well as financial capital, such as money and investments.
However, there is another type of capital that is just as important: human capital. Human capital refers to the skills, knowledge, and abilities that individuals possess, which can be used to create economic value. This can include things like education, training, and experience.
This is where the concept of human capital comes in. In order to "see" Ms. Applebee's apple (or capital), you need to have the skills and knowledge to understand the play on words. This requires a certain level of human capital - specifically, linguistic and cultural capital.
Linguistic capital refers to the ability to use language effectively, including understanding and interpreting language in different contexts. Cultural capital, on the other hand, refers to the knowledge and skills needed to navigate different cultural contexts and understand cultural references.
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Can someone help and explain the terms and sequence with answers please?
29, 22, 15, 8
B) these are the first five terms of another sequence.
4, 7, 12, 19, 28
Find the nth term.
!!!HELPP ME ASAP!!!! Claude is reading a science fiction book in which aliens have dropped a fungus on a 10 square mile section of a planet. The fungus spreads rapidly, increasing the area it covers by 50% every hour. The total
area of the planet is 200 million square miles. Claude created an equation and determined that it will take approximately 41 hours for the fungus to cover planet What is the equation that Claude created?
The equation Claude created is: 10 * (1.5)^t = 200,000,000, where t represents the number of hours.
Let A be the initial area of the fungus that covers the 10 square mile section of the planet.
After 1 hour, the fungus increases in size by 50%, which means it multiplies by 1.5. Thus, the area covered by the fungus after 1 hour is:
A + 1.5A = 2.5AAfter 2 hours, the fungus increases again by 50%, so its area becomes:
2.5A + 1.5(2.5A) = 6.25A
In general, after n hours, the area of the fungus becomes: A(1.5)^n
Since we want the fungus to cover the entire planet, we need to solve the following equation: A(1.5)^41 = 200,000,000
Simplifying, we get:
A = 200,000,000 / (1.5)^41
Therefore, the equation that Claude created is:
A(1.5)^n = 200,000,000
where n is the number of hours it takes for the fungus to cover the planet.
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Mrs. Logan's class is hiking. They increase their elevation by 100 ft every 2 min. What is the rate of their climbing?
A 10ftminftmin
B 50ftminftmin
C 100ftminftmin
D 200ftmin
The correct answer to this question is C, 100ft/min.
The rate of climbing can be calculated by dividing the increase in elevation (100 ft) by the time it takes to make that increase (2 min).
This gives a rate of 50ft/min. Therefore, the class is climbing at a rate of 100ft/min since the question asks for the rate of their climbing.
It's important to pay attention to the wording of the question to ensure that the correct answer is selected. In this case, the question specifically asks for the rate of climbing, not the rate of increase in elevation.
Always read the question carefully and make sure to include all given information when solving problems with content loaded.
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TJ’s drawer has many loose socks: 5 gray, 5 black, and 6 white. If two socks are randomly pulled out without replacement, what is the probability that he pulls 2 white socks?
The probability of TJ pulling 2 white socks is 0.125 or 12.5%.
What is the probability that TJ pulls 2 white socks?There are 16 socks in total, so the probability of the first sock being white is 6/16.
Since we are not replacing the first sock, there are now 15 socks left, including 5 white socks.
So the probability of the second sock being white, given that the first sock was white, is 5/15.
To find the probability of both events occurring, we multiply the probabilities:
P(white and white) = P(white on first draw) × P(white on second draw, given that the first was white)
P(white and white) = (6/16) × (5/15)
P(white and white) = 1/8
So the probability of pulling 2 white socks is 1/8 or approximately 0.125.
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An air conditioner is priced at $900. Amirah buys the air conditioner on hire purchase according to the following terms: downpayment of 20% and the remaining to be paid in monthly installments over 4 years at a simple interest rate of 10% per annum.
i) Find her monthly installment
ii) Find the total amount Amirah pays for the air conditioner.
iii) How much more does she have to pay for buying the air conditioner on hire purchase?
The monthly installment of the air conditioner is $ 21 and the total amount paid for the air conditioner is $ 1188. She has to pay $ 288 more for buying the air conditioner on hire purchase.
Original cost = $900
Downpayment = 20%
Downpayment = 20% of 90
= 0.20 * 900
=$180
For simple interest,
A = P + P * r * t
where A is the amount
P is the principal
r is the rate of interest
t is the time
Given,
P = Total cost - Downpayment
= 900 - 180
= $720
r = 10%
t = 4 years
A = 720 + 720 * 0.10 * 4
= $ 1008
Number of months she has to pay = 4 * 12
= 48 months
Monthly installment = 1008 / 48
= $ 21
Total amount paid = Downpayment + Monthly installments
= 180 + 1008
= $ 1188
Money paid more = 1188 - 900
= $ 288
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Use The Fundamental Theorem of Calculus, Part 2 to evaluate / - (13 – 12) dt.
The value of the integral [tex]\int -1^1 (13 - 12) dt[/tex] is 26.
How to evaluate the integral?To evaluate the integral [tex]\int-1^1 (13 - 12) dt[/tex] , we need to find an antiderivative of the integrand, which is simply:
∫ (13 - 12) dt = 13t - 12
Using this antiderivative, we can evaluate the definite integral by applying the theorem:
[tex]\int-1^1 (13 - 12) dt = [13t - 12]_{(-1)^1[/tex]
Evaluating this expression at the limits of integration (-1 and 1), we get:
[13(1) - 12] - [13(-1) - 12]
Simplifying, we get:
= 13 - 12 + 13 + 12
= 26
Therefore, the value of the integral [tex]\int-1^1 (13 - 12) dt[/tex] is 26.
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3
Select the correct answer.
The angle of depression between the top of a 100-foot cliff and a ship approaching the shore is 37°.
cliff top
37°
100
feet
37°
ship
d
What is the approximate distance, d, between the bottom of the cliff and the ship?
ÐÐ
166. 2 feet
OB. 60. 2 feet
ÐС.
75. 4 feet
OD.
132. 7 feet
Reset
Next
The correct answer is (D) 132.7 feet.
From the given information, we can draw a diagram as follows:
A
/|
/ |
/ | 37°
/ |
/ |
/ |
/ |
/_ _ _ _|
d B
Where A represents the top of the cliff, B represents the ship and d represents the distance between the ship and the bottom of the cliff.
Since we know that the angle of depression is 37 degrees, then the angle CAB is also 37 degrees. We also know that AB is 100 feet, which is the height of the cliff. We want to find the distance d between the bottom of the cliff and the ship.
We can use the tangent function to find d:
tan(37°) = AB/BD
tan(37°) = 100/d
d = 100/tan(37°)
Using a calculator, we can find that:
d ≈ 132.7 feet
Therefore, the correct answer is (D) 132.7 feet.
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The salaries of professional baseball players are heavily skewed right with a mean of $3. 2 million and a standard
deviation of $2 million. A baseball analyst randomly selects 40 athletes and records the mean salary. Which of the
following best describes the sampling distribution of all possible samples of size 40?
skewed right with a mean of 3. 2 million and a standard deviation of 2 million
skewed right with a mean of 3. 2 million and a standard deviation of 0. 32 million
approximately Normal with a mean of 3. 2 million and a standard deviation of 2 million
approximately Normal with a mean of 3. 2 million and a standard deviation of 0. 32 million
The best answer is approximately Normal with a mean of 3.2 million and a standard deviation of 0.32 million.
The sampling distribution of the mean of a sample is approximately normal if the sample size is sufficiently large, regardless of the distribution of the population from which the sample is drawn.
According to the Central Limit Theorem, the mean of the sampling distribution is equal to the population mean, which is $3.2$ million. The standard deviation of the sampling distribution is equal to the population standard deviation divided by the square root of the sample size, which is [tex]$2/\sqrt{40} \approx 0.3162$[/tex] million.
Therefore, the best answer is approximately Normal with a mean of 3.2 million and a standard deviation of 0.32 million.
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