Answer:
8 38/48
Step-by-step explanation:
x2 A firm can produce 200 units per week. If its total cost function is C = 700 + 1200x dollars and its total revenue function is R = 1400x dollars, how many units, x, should it produce to maximize its profit? units X = Find the maximum profit. $
The firm should produce 3.5 units to maximize profit, but the maximum profit is -$300, indicating the firm is operating at a loss.
How to calculate profit and revenue function?To find the units of production that maximize profit, we need to first find the profit function by subtracting the cost function from the revenue function:
Profit = Revenue - Cost = R - C = 1400x - (700 + 1200x) = 200x - 700
Now, to find the units of production that maximize profit, we need to find the value of x that maximizes the profit function. We can do this by taking the derivative of the profit function with respect to x and setting it equal to zero:
d(Profit)/dx = 200 - 0 = 0
Solving for x, we get:
x = 3.5
Therefore, the firm should produce 3.5 units to maximize its profit.
To find the maximum profit, we can substitute the value of x back into the profit function:
Profit = 200x - 700 = 200(3.5) - 700 = -300
So the maximum profit is -$300, which means the firm is operating at a loss. This suggests that the firm should re-evaluate its production costs and revenue strategies to try and reduce costs or increase revenue in order to achieve a positive profit.
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Find the directional derivative of the function at the given point in the direction of the vector v. f(x, y) = 3ex sin(y), (0, 1/3), v = (-5, 12) V = D,FO, 1/3) = 12-973 10 x Need Help? Read It Watch
The directional derivative of the function f(x,y) in the direction of the vector v at the point (0,1/3) is:
Duf(0,1/3) = ∇f(0,1/3) · u = [0, 3e/2] · [-5/13, 12/13] = (3e/2)(12/13) ≈ 1.38
To find the directional derivative of the function f(x, y) = 3e^x sin(y) at the point (0, 1/3) in the direction of the vector v = (-5, 12), we first need to calculate the gradient of the function, which is a vector containing the partial derivatives with respect to x and y.
The partial derivative with respect to x:
∂f/∂x = 3eˣ sin(y)
At point (0, 1/3), ∂f/∂x = 3e⁰ sin(1/3) = 3 sin(1/3)
The partial derivative with respect to y:
∂f/∂y = 3eˣ cos(y)
we first need to find the gradient of f at that point:
∇f = [∂f/∂x, ∂f/∂y] = [3ex sin(y), 3ex cos(y)]
Evaluated at (0,1/3), we get:
∇f(0,1/3) = [0, 3e/2
At point (0, 1/3), ∂f/∂y = 3e⁰ cos(1/3) = 3 cos(1/3)
So the gradient vector is ∇f = (3 sin(1/3), 3 cos(1/3)).
Next, we need to normalize the direction vector v:
|v| = √((-5)² + (12)²) = 13
Normalized vector v: (-5/13, 12/13)
Finally, we calculate the directional derivative (D_vf) as the dot product of the gradient vector and the normalized direction vector:
D(vf)= ∇f • (-5/13, 12/13) = (3 sin(1/3) × (-5/13)) + (3 cos(1/3) × (12/13))
D(vf) = (-15/13) sin(1/3) + (36/13) cos(1/3)
That is the directional derivative of the function at the given point in the direction of the vector v
Duf(0,1/3) = ∇f(0,1/3) · u = [0, 3e/2] · [-5/13, 12/13] = (3e/2)(12/13) ≈ 1.38
Therefore, the directional derivative of f(x, y) in the direction of v at the point (0,1/3) is approximately 1.38.
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1. A company is testing a new energy drink. Volunteers are asked to rate their energy one hour
after consuming a beverage. Unknown to them, some volunteers are given the real energy
drink and some are given a placebo-a drink that looks and tastes the same, but does not have
the energy-producing ingredients. Show your work using the following list of random digits to
assign each participant listed either the real drink or the placebo.
We can assign each participant the real drink or placebo by assigning a drink based on the next random digit.
How to assign to the real and placebo ?One method for assigning participants their drink is to utilize a basic rule predicated on the oddness or evenness of specific digits. In this scenario, you may reserve “odd” numbers strictly for real drinks and “even” numbers exclusively for placebos.
To execute this procedure, we will begin at the left-hand side of our precomputed list of randomized digits and work to identify the subsequent digit in order to assign each participant with their corresponding drink:
Abby - Real (6)Barry - Placebo (9)Callie - Real (4)Dion - Placebo (2)Ernie - Real (9)Falco - Placebo (8)Garrett - Real (6)Hallie - Placebo (1)Indigo - Real (1)Jaylene - Real (6)How to assign numbers to each division ?Assign numbers to each of the houses in every subdivision, ranging from 1 through to 100. Utilize an online random number generator or a table containing random numbers within the range of 1 and 100 to construct a list of such randomly generated figures.
Choose the initial 20 unique figures from said list for both subdivisions selectively. Proceed with visiting those particular homes denoted by these chosen numbers, then examine and test their water sources accordingly.
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two players simultaneously toss (independently) a coin each. both coins have a chance of heads p. they keep on performing simultaneous tosses till they end up with different. what is the expected number of trials (simultaneous tosses) before they stop?
The expected number of tosses until two players get different results when simultaneously tossing a coin each with a chance of heads p is (1-2p)/(2p-2p²).
The probability that both players get the same result (either both heads or both tails) on any given toss is p² + (1-p)² = 2p² - 2p + 1. The probability that they get different results (one head and one tail) is therefore 1 - (2p² - 2p + 1) = 2p - 2p².
Let E be the expected number of tosses until they end up with different results. If they get different results on the first toss, the game ends after 1 toss.
Otherwise, they have to repeat the process again, and the expected number of tosses is increased by 1. Therefore, we can express E in terms of the probabilities of getting different or same results on the first toss
E = (2p - 2p²)1 + (1 - 2p + 2p²)(1 + E)
Simplifying, we get
E = 1 + 2pE - 2p + 2p²
Rearranging and solving for E, we get
E = (1 - 2p) / (2p - 2p²)
Therefore, the expected number of tosses before the players end up with different results is (1 - 2p) / (2p - 2p²).
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Hillary used her credit card to buy a $804 laptop, which she paid off by making identical monthly payments for two and a half years. Over the six years that she kept the laptop, it cost her an average of $0. 27 of electricity per day. Hillary's credit card has an APR of 11. 27%, compounded monthly, and she made no other purchases with her credit card until she had paid off the laptop. What percentage of the lifetime cost of the laptop was interest? Assume that there were two leap years over the period that Hillary kept the laptop and round all dollar values to the nearest cent)
14.33% of the lifetime cost of Hillary's laptop was interest.
Since Hillary paid off her laptop in two and a half years, and kept it for six years, we need to calculate the compound interest over six years. Accounting for two leap years, there were 365 * 6 + 2 = 2192 days over the period that Hillary kept the laptop. Therefore, the total cost of electricity over that period was 2192 * 0.27 = $592.64.
Plugging in the values, we get:
A = 804 * (1 + 0.1127/12)³⁰= 1003.94
Hillary paid $1003.94 for her laptop, including interest. Subtracting the original cost of the laptop, we get:
Interest = 1003.94 - 804 = 199.94
So Hillary paid $199.94 in interest on her credit card over two and a half years. To calculate what percentage of the lifetime cost of the laptop was interest, we need to divide the interest paid by the total cost of the laptop and electricity:
Lifetime cost = 804 + 592.64 = 1396.64
Percentage of lifetime cost that was interest = (199.94 / 1396.64) * 100% = 14.33%
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PLEASE HELP AND SHOW WORK!! 10 PTS IF U ANSWER
Answer:
Step-by-step explanation:
You're going to want to break up the shape into three parts, two triangles, and the rectangle.
Starting with the left-most triangle: A=(L*W)/2
The length is 4ft and the width is 3ft, multiply and divide by 2 to get: A=6 square feet.
Do the same with the second triangle on the bottom left (L=2ft, W=2ft) to get A=2 square feet.
Now the rectangle, A=L*W and total length is 10ft (8ft+2ft) and the width is 3ft. Multiply these values to get A=30 square feet.
Last step: add up all three areas for the total area of the entire shape, 6+2+30=38.
Area= 38 square feet.
PLEASE HELP DUE TODAY
2. The data in the table represent the training times (in seconds) for Adam and Miguel.
Adam 103 105 104 106 100 98 92 91 97 101
Miguel 88 86 89 93 105 85 92 96 97 94
(a) All of the training times of which person had the greatest spread? Explain how you know.
(b) The middle 50% of the training times of which person had the least spread? Explain how you know.
(c) What do the answers to Parts 2(a) and 2(b) tell you about Adam’s and Miguel’s training times?
(a) Miguel had the greatest spread in training times.
(b) Adam had the least spread in the middle 50% of training times.
(c) Miguel's training times had a greater range, indicating more variability, while Adam's training times were more consistent and tightly grouped.
(a) Who had the greatest spread?(b) Who had the least spread?(c) how do the answers indicate?(a) To determine which person had the greatest spread, we need to compare the range or variability of their training times. By observing the given data, we can see that Adam's training times range from 92 to 106, resulting in a spread of 14. On the other hand, Miguel's training times range from 85 to 105, resulting in a spread of 20. Therefore, Miguel had the greatest spread of training times.
(b) To determine which person had the least spread in the middle 50% of training times, we need to compare the interquartile range (IQR). By calculating the IQR, we find that Adam's IQR is 9 (from the 25th to the 75th percentile), whereas Miguel's IQR is 7. Since Adam's IQR is greater, it means Miguel had the least spread in the middle 50% of training times.
(c) The answers to parts (a) and (b) indicate that while Miguel had a greater spread of training times overall, Adam's training times had a greater spread in the middle 50%. This suggests that Adam's training times were more concentrated around the median, while Miguel's training times were more spread out.
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a) All of the training times of Adam had the greatest spread.
(b) The middle 50% of the training times of Adam had the least spread.
(c) The answers to Parts (a) and (b) tell us that Adam's training performance may be more stable within that middle 50%, while Miguel's performance is more variable.
(a) Adam's training times had the greatest spread.
To determine this, we can calculate the range of the data sets. For Adam, the range is 106-92 = 14 seconds, while for Miguel, the range is 105-85 = 20 seconds. However, a better measure of spread is the interquartile range (IQR), which focuses on the middle 50% of the data. For Adam, the IQR is 101-97 = 4 seconds, while for Miguel, the IQR is 96-89 = 7 seconds. In both cases, Miguel's data has a greater spread.
(b) Adam's training times had the least spread for the middle 50% of the data. This is demonstrated by the IQR, as mentioned above. For Adam, the IQR is 4 seconds, while for Miguel, it is 7 seconds.
(c) The answers to Parts 2(a) and 2(b) tell us that while Miguel's overall training times have a greater spread, the middle 50% of Adam's training times are more consistent, with less variation. This suggests that Adam's training performance may be more stable within that middle 50%, while Miguel's performance is more variable.
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in 2018, coolville, california had a population of 72,000 people. in 2020, the population had dropped to
70,379. city officials expect the population to eventually level off at 60,000.
a. what kind of function would best model the population over time? how do you know?
b. write an equation that models the changing populaion over time.
a. The function that would best model the population over time is Exponential decay
b. write an equation that models the changing population over time P(t) = [tex]72,000 * e^(-0.035t)[/tex]
a. Exponential rot (Exponential decay) work would best demonstrate the populace over time.
Usually, the populace has diminished from 72,000 to 70,379 in fair 2 years, which could be a generally brief time period. Also, city authorities anticipate the populace to level off at 60,000, which is a sign of exponential rot.
b. The exponential rot work can be composed as:
P(t) = P0 *[tex]e^(-kt)[/tex]
Where P(t) is the populace at time t, P0 is the starting populace, e is the scientific steady around rise to 2.718, and k is the rot consistent.
Utilizing the given data, able to substitute the values:
P(0) = 72,000 (populace in 2018)
P(2) = 70,379 (populace in 2020)
To illuminate for k, able to utilize the equation:
k = ln(P0/P(t))/t
k = ln(72,000/70,379)/2
k ≈ 0.035
Subsequently, the condition that models the changing populace over time is:
P(t) = [tex]72,000 * e^(-0.035t)[/tex]
where t is the time in a long time since 2018.
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If x -1/x=3 find x cube -1/xcube
Answer:
Sure. Here are the steps on how to solve for x^3 - 1/x^3:
1. **Cube both sides of the equation x - 1/x = 3.** This will give us the equation x^3 - 3x + 1/x^3 = 27.
2. **Subtract 1 from both sides of the equation.** This will give us the equation x^3 - 1/x^3 = 26.
3. **The answer is 26.**
Here is the solution in detail:
1. **Cube both sides of the equation x - 1/x = 3.**
```
(x - 1/x)^3 = 3^3
```
```
x^3 - 3x + 1/x^3 = 27
```
2. **Subtract 1 from both sides of the equation.**
```
x^3 - 1/x^3 - 1 = 27 - 1
```
```
x^3 - 1/x^3 = 26
```
3. The answer is 26.
Write and simplify the integral that gives the arc length of the following curve on the given integral. b. If necessary, use technology to evaluate or approximate the integral. y = -x² -5 on [-1,2]
To find the arc length of the curve y = -x² -5 on the interval [-1,2], we use the formula to evaluate:
L = ∫√(1 + (dy/dx)²) dx
where dy/dx is the derivative of y with respect to x.
First, we find dy/dx:
dy/dx = -2x
Next, we substitute dy/dx into the formula and simplify:
L = ∫√(1 + (-2x)²) dx
L = ∫√(1 + 4x²) dx
To evaluate this integral, we can use a trigonometric substitution. Let x = (1/2)tanθ, then dx = (1/2)sec²θ dθ. Substituting, we get:
L = ∫√(1 + 4(1/2)²tan²θ)(1/2)sec²θ dθ
L = (1/2)∫sec³θ dθ
To integrate sec³θ, we use integration by parts:
u = secθ, du/dθ = secθ tanθ
dv/dθ = sec²θ, v = tanθ
∫sec³θ dθ = secθ tanθ - ∫tan²θ secθ dθ
= secθ tanθ - ∫secθ dθ + ∫sec³θ dθ
Rearranging, we get:
2∫sec³θ dθ = secθ tanθ + ln|secθ + tanθ|
Therefore:
L = (1/2)(secθ tanθ + ln|secθ + tanθ|) + C
To evaluate L on the interval [-1,2], we need to find θ when x = -1 and x = 2. Using the substitution x = (1/2)tanθ:
When x = -1, θ = -π/4
When x = 2, θ = π/3
Substituting these values into the equation for L and simplifying, we get:
L = (1/2)(2√2 + ln(3 + 2√3) + π/4)
Therefore, the integral that gives the arc length of the curve y = -x² -5 on the interval [-1,2] is:
L = (1/2)(2√2 + ln(3 + 2√3) + π/4)
Note: If technology is used to evaluate or approximate the integral, the answer may differ slightly due to rounding errors.
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Justice has a box of trading cards. There are three types of trading cards in the box, a basketball, a football, and a soccer ball. The probability of picking out a basketball card is 2/5, and the probability of picking out a football card is 1/3. What is the probability Justice will randomly pick out a soccer card?
If the probability of picking out a basketball card is 2/5, and the probability of picking out a football card is 1/3, the probability of Justice randomly picking out a soccer card is 4/15.
To find the probability of Justice picking out a soccer card, we need to know the total probability of all three types of cards adding up to 1. Since there are only three types of cards, we can subtract the probability of picking a basketball card and the probability of picking a football card from 1 to find the probability of picking a soccer card.
Let P(S) be the probability of picking a soccer card.
We know that P(B) = 2/5 and P(F) = 1/3.
Therefore, the total probability of picking one of the three cards is:
P(B) + P(F) + P(S) = 1
Substituting the values we know, we get:
2/5 + 1/3 + P(S) = 1
Simplifying the equation, we get:
6/15 + 5/15 + P(S) = 1
11/15 + P(S) = 1
P(S) = 1 - 11/15
P(S) = 4/15
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This question is kinda confusing :(
A circle with center (7,3) and radius of 5 is graphed below with a square inscribed in
the circle.
Part A: Dillon and Chelsey are discussing how to write the equation of a tangent line
to circle A through point B. Both agree that they start the problem by drawing the
radius AB and find the slope of that segment. They also know that a tangent line is
perpendicular to the radius.
The area of the shaded region is (9/500)π.
To find the area shaded below in circle K, we first need to find the radius of the circle.
Let O be the center of the circle, and let N be the midpoint of segment LM. We can draw a radius ON to segment LM such that it is perpendicular to LM, and then draw another radius OL to point L. This forms a right triangle LON with the hypotenuse equal to the radius of circle K.
Since segment LM is given to have a length of 11/9π, we can find the length of LN by dividing it in half:
LN = (11/9π)/2 = 11/18π
We can then use trigonometry to find the length of OL:
sin(55°) = OL / LN
OL = LN sin(55°)
OL = (11/18π) sin(55°)
Next, we can use the Pythagorean theorem to find the length of ON:
ON² = OL² + LN²
ON² = [(11/18π) sin(55°)]² + [11/18π]²
ON ≈ 1.022
Therefore, the radius of circle K is approximately 1.022.
The area of the shaded region can now be found by subtracting the area of sector LOM from the area of triangle LON:
Area of sector LOM = (110/360)π(1.022)² ≈ 0.317π
Area of triangle LON = (1/2)(11/18π)(1.022) ≈ 0.326π
Area of shaded region = (0.326π) - (0.317π) = (9/500)π
So the area of the shaded region is (9/500)π.
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The average price, in dollars, of a gallon of orange juice r years after 1990 can be modeled by the
exponential function f(x) - 1. 07(103) +3. 79.
Use the exponential function to estimate the average price of a gallon of orange juice in 2020.
Round your answer to the nearest cent.
Using the exponential function to estimate the average price of a gallon of orange juice in 2020, the average price in 2020 is $6.39
To estimate the average price of a gallon of orange juice in 2020 using the given exponential function f(x) = 1.07(1.03^x) + 3.79, first, determine the number of years after 1990, which is r:
r = 2020 - 1990 = 30
Next, substitute r with 30 into the function:
f(30) = 1.07(1.03^30) + 3.79
Calculate the value of f(30):
f(30) ≈ 1.07(2.427) + 3.79 ≈ 2.599 + 3.79 ≈ 6.389
Round your answer to the nearest cent:
Average price in 2020 ≈ $6.39
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What is the finance charge on a credit card account if the balance is $660. 30 with an
APR of 6. 2%?
The finance charge on a credit card account with a balance of $660.30 and an APR of 6.2% is $3.41.
To calculate the finance charge on a credit card account with a balance of $660.30 and an APR of 6.2%. Here's a step-by-step explanation:
1. Convert the APR (Annual Percentage Rate) to a decimal by dividing it by 100: 6.2 / 100 = 0.062
2. Divide the APR decimal by 12 to find the monthly interest rate: 0.062 / 12 = 0.005167
3. Multiply the credit card balance by the monthly interest rate: $660.30 * 0.005167 = $3.41
The finance charge on a credit card account with a balance of $660.30 and an Annual Percentage Rate (APR) of 6.2% is determined to be $3.41. This finance charge represents the cost of borrowing on the credit card and is calculated based on the outstanding balance and the interest rate.
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Un termómetro con resistencia de platino de ciertas especificaciones
opera de acuerdo con la ecuación R = 10000 + (4124 x 10-2) T – (1779 x 10-5) T2
Donde R es la resistencia (en ohms) a la temperatura T (grados Celsius).
Si R = 13946, determine el valor correspondiente de T. Redondee al grado
Celsius más cercano. Suponga que tal termómetro sólo se utiliza si T ≤
600° C
The value of T is 428°C.
How to calculate temperature from resistance?To solve the problem, we can start by substituting the given value of R = 13946 into the equation R = 10000 + (4124 x 10^-2)T – (1779 x 10^-5)T^2 and solving for T. This gives us a quadratic equation in T which can be solved using the quadratic formula.
After simplifying, we get T = 427.67°C or T = -88.22°C. However, we know that the thermometer is only used if T ≤ 600°C, so the only valid solution is T = 427.67°C.Therefore, the temperature corresponding to a resistance of 13946 ohms is approximately 428°C.
It's important to note that this assumes the thermometer is operating within its specified range and that the resistance-temperature relationship remains linear over the given temperature range.
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Find the area of a regular decagon with an apothem of 6. 2 units. Round your answer to the nearest hundredth.
The approximate area of the regular decagon, rounded to the nearest hundredth, is 190.78 square units.
What is the area of a regular decagon with an apothem of 6.2 units, rounded to the nearest hundredth?To find the area of a regular decagon with an apothem of 6.2 units, we can use the formula:
Area = (1/2) × apothem × perimeter
To find "s", we can use the fact that a regular decagon can be divided into 10 congruent triangles, where each triangle has an interior angle of 144 degrees. We can use trigonometry to find the length of the side "s" using one of these triangles:
tan(72) = (s/2.6)s = 2.6 × tan(72)s ≈ 6.16Now we can find the perimeter of the decagon:
Perimeter = 10 × sPerimeter = 10 × 6.16Perimeter ≈ 61.62Finally, we can substitute the apothem and perimeter into the formula to find the area:
Area = (1/2) × 6.2 × 61.62Area ≈ 190.78Rounding to the nearest hundredth, the area of the regular decagon is approximately 190.78 square units.
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Find all solutions of the equation in radians.
sin(2t)cos(t)-cos(2t)sin(t)=0
Answer:
1. First simplify the left-hand side of the equation using the trigonometric identity
sin(2t)cos(t) - cos(2t)sin(t) = sin(2t - t) = sin(t)
2. That way the equation becomes sin(t) = 0.
3. The solutions to this equation are t = kπ for all integers k.
4. Therefore, the general solution to the original equation is:
t = kπ or t = π/2 + kπ, where k is an integer.
Harvey won some money on a
scratch-and-win ticket. Then, he won a
$2 bonus. When he arrived at the counter,
he noticed that he had also won a "triple
your winnings" ticket. As Harvey was
cashing in his prize, the cashier told him
he was the 100th customer, so his total
winnings were automatically doubled. Write two algebraic expressions to
describe Harvey’s winnings
First algebraic expression: x + 2. Second algebraic expression: 6x + 12.
We can represent Harvey's winnings using algebraic expressions.
Let's use the variable 'x' to represent the amount Harvey won on the scratch-and-win ticket. Harvey then won a $2 bonus, so we add 2 to 'x':
1) x + 2
Next, Harvey won a "triple your winnings" ticket, so we need to multiply the current winnings by 3:
2) 3(x + 2)
Finally, as the 100th customer, Harvey's total winnings were doubled:
3) 2 * 3(x + 2)
So, the two algebraic expressions to describe Harvey's winnings are:
1) x + 2 (initial winnings with the $2 bonus)
2) 2 * 3(x + 2) (total winnings after tripling and doubling)
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Antawn Jamison lanza tiros libres. Anotar o fallar los tiros libres no cambia la probabilidad de que anote en el siguiente tiro, y él anota 73\%73%73, percent de sus tiros libres. ¿Cuál es la probabilidad de que Antawn Jamison anote sus siguientes 9 tiros libres?
la probabilidad de que Antawn Jamison anote sus siguientes 9 tiros libres es del 7.33%.
What is probability?
By simply dividing the favorable number of possibilities by the entire number of possible outcomes, the probability of an occurrence can be determined using the probability formula. Because the favorable number of outcomes can never exceed the entire number of outcomes, the chance of an event occurring might range from 0 to 1.
La probabilidad de que anote un tiro libre es del 73%, lo que significa que la probabilidad de que falle es del 27%.
La probabilidad de que anote sus próximos 9 tiros libres es:
0.73 x 0.73 x 0.73 x 0.73 x 0.73 x 0.73 x 0.73 x 0.73 x 0.73 = 0.0733
Por lo tanto, la probabilidad de que Antawn Jamison anote sus siguientes 9 tiros libres es del 7.33%.
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suppose a piece of dust finds itself on a cd. if the spin rate of the cd is 500 rpm, and the piece of dust is 2.1 cm from the center, what is the total distance traveled by the dust in 4.0 minutes?
The total distance travelled by dust in the given time of 4.0 minutes at the spin rate of 500rpm is equal to 26,400cm.
Spin rate of the cd is equal to 500rpm
distance of piece of dust from the center = 2.1 cm
Distance traveled by a point on the CD that is 2.1 cm from the center in one revolution = circumference of the circle with a radius of 2.1 cm,
C = 2πr
= 2π(2.1 cm)
≈ 13.2 cm
Distance traveled by the dust in one revolution is 13.2 cm.
Calculate the number of revolutions that the CD makes in 4.0 minutes.
1 minute = 60 seconds
⇒ 4.0 minutes = 4.0 x 60
⇒4.0 minutes = 240 seconds
The CD rotates at a rate of 500 revolutions per minute,
In 4.0 minutes it will rotate,
500 x 4.0
= 2000 times.
The total distance traveled by the dust in 4.0 minutes is,
distance traveled per revolution x number of revolutions
= 13.2 cm/rev x 2000 rev
= 26,400 cm
Therefore, the total distance traveled by the dust in 4.0 minutes is 26,400 cm.
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In a student poll of 38 boys and 42 girls,
15 boys and 20 girls said they like science
fiction books. Based on this information,
Answer:40-45 percent
Step-by-step explanation:
explenation
Which of the following combinations of side lengths would NOT form a triangle with vertices X, Y, and Z?
A.
XY = 7 mm , YZ = 14 mm , XZ = 25 mm
B.
XY = 11 mm , YZ = 18 mm , XZ = 21 mm
C.
XY = 11 mm , YZ = 14 mm , XZ = 21 mm
D.
XY = 7 mm , YZ = 14 mm , XZ = 17 mm
The combinations of side lengths that would NOT form a triangle with vertices X, Y, and Z is 7 mm , YZ = 14 mm , XZ = 25 mm.
option A.
What are the possible lengths of triangle?
The lengths of triangle are determined base a given set of rules;
let a, b, and c be the side lengths of a triangle;
Based on the rules of side lengths of triangles, the sum of length a and b must be greater than c, or the sum of a and c must be greater than b or the sum of b and c must be greater than a.
For option A;
7 mm + 14 mm < 25 mm (this cannot be)
For option B;
11 mm + 18 mm > 21 mm (this will work)
For option C;
11 mm + 14 mm > 21 mm (this will work)
For option D;
7 mm + 14 mm > 17 mm (this will work)
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The cone and the sphere shown have the same volume. The diameter of the cone is 24 cm, and the diameter of the sphere is 18 cm. What is the height h of the cone?
40.50 cm
2.25 cm
6.75 cm
20.25 cm
Answer:
i think the answer is 20.25
Step-by-step explanation:
Rectangle ABCD is graphed in the coordinate plane. The following are
the vertices of the rectangle: A(-6,-4), B(-4,-4), C(-4,-2), and
D(-6, -2).
What is the perimeter of rectangle ABCD?
units
Stuck? Review related articles/videos or use a hint.
Report a problem
Answer:
The perimeter of rectangle ABCD can be calculated by adding up the lengths of its sides. Using the distance formula, we can find that AB has a length of 2 units, BC has a length of 2 units, CD has a length of 2 units, and AD has a length of 4 units. Therefore, the perimeter of rectangle ABCD is 10 units.
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Find the critical point(s) of the function
f(x)=x3+x −3+2
. (Give your answer in the form of a comma-separated list of values. Express numbers in exact form. Use symbolic notation and fractions where needed. Enter DNE if the function has no critical points.) critical point(s): Determine the
x
-coordinates of the critical point(s) that correspond(s) to a local minimum or a local maximum. (Give your answer in the form of a comma-separated list. Express numbers in exact form. Use symbolic notation and fractions where needed. Enter DNE if the function has no local minimum or local maximum.)
The critical point(s) of the function f(x) = x^3 + x - 3 + 2 are determined to find the x-coordinate(s) of the local minimum or local maximum.
To find the critical point(s) of the given function, we need to first find the derivative of the function and then solve for the value(s) of x that make the derivative equal to zero.
Given function: f(x) = x^3 + x - 3 + 2
Find the derivative of the function f(x) with respect to x.
f'(x) = 3x^2 + 1
Set the derivative f'(x) equal to zero and solve for x.
3x^2 + 1 = 0
Subtract 1 from both sides of the equation.
3x^2 = -1
Divide both sides of the equation by 3.
x^2 = -1/3
Take the square root of both sides of the equation.
x = ±√(-1/3)
Since the square root of a negative number is not a real number, the function f(x) does not have any real critical points. Therefore, the critical point(s) for the function f(x) = x^3 + x - 3 + 2 is DNE (Does Not Exist) in terms of real numbers.
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During a survey of 240 people who own cats, 188 people preferred cat food A to cat food B. Based on these results, in the second survey of 60 people, how many people can be predicted to prefer cat food A?
Based on the first survey results, we can predict that around 47 people in the second survey of 60 people will prefer cat food A over cat food B.
Based on the results of the first survey, 188 out of 240 people preferred cat food A over cat food B. To predict the preference for cat food A in the second survey, we can calculate the proportion of people who preferred cat food A in the first survey and apply it to the sample size of the second survey.
First, find the proportion of people preferring cat food A in the first survey:
Proportion = (Number of people preferring cat food A) / (Total number of people surveyed)
Proportion = 188 / 240
Proportion ≈ 0.7833
Now, apply this proportion to the second survey's sample size of 60 people:
Predicted preference = Proportion × (Sample size of the second survey)
Predicted preference = 0.7833 × 60
Predicted preference ≈ 47
Therefore, based on the first survey results, we can predict that around 47 people in the second survey of 60 people will prefer cat food A over cat food B.
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Please i cant find the answer to this
Answer:
9
Step-by-step explanation:
First, let's move the variables to one side and the numbers to the other side:
[tex]\frac{2}{3}b+5=20-b\\[/tex]
subtract 5 from both sides:
[tex]\frac{2}{3}b=15-b\\[/tex]
add b to both sides:
[tex]\\1\frac{2}{3}b=15\\[/tex]
divide both sides by [tex]1\frac{2}{3}[/tex]:
[tex]b=9[/tex]
Hope this helps :)
Select the correct answer.
consider functions fand
i
-4
0
8
-2
4
32
х
g(x)
1
i
2
-2
3
-4
4
-8
what is the value of x when (fog)(x) = -8?
To find the value of x when (fog)(x) = -8, we first need to find the composition of f and g, which is given by (fog)(x) = f(g(x)). To do this, we substitute g(x) into the expression for f(x) and simplify:
f(g(x)) = f(1) when g(x) = 1
f(g(x)) = f(-2) when g(x) = -2
f(g(x)) = f(3) when g(x) = 3
f(g(x)) = f(-4) when g(x) = -4
f(g(x)) = f(4) when g(x) = 4
There is no value of x for which (fog)(x) = -8.
Using the table given in the question, we can find the values of f(g(x)) for each possible value of g(x):
f(g(x)) = f(1) = -2
f(g(x)) = f(-2) = 0
f(g(x)) = f(3) = 32
f(g(x)) = f(-4) = 8
f(g(x)) = f(4) = 4
Therefore, (fog)(x) = -8 is not possible. The closest value we can get to -8 is by setting g(x) = -4, which gives f(g(x)) = f(-4) = 8. Thus, there is no value of x for which (fog)(x) = -8.
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The sixth-graders at Ayana's school got to choose between a field trip to a museum and a field trip to a factory. 39 sixth-graders picked the museum. If there are 50 sixth-graders in all at Ayana's school, what percentage of the sixth-graders picked the museum?
Answer:
78% of sixth-graders picked a field trip to a museum.
Step-by-step explanation:
39 out of 50 kids picked the museum field trip. This is 39/50. We can change this like so:
39/50 × 2/2
= 78/100
78/100 is 78% (because percent literally means "per hundred)
Another way is to just divide. 39/50 means 39 ÷ 50.
39 ÷ 50 is .78 then times by 100 to change to a percent. This works for all kinds of fractions.
78% of sixth graders at Ayana's school selected the museum field trip.