Lo ciento, pero yo no se mucho Espanol por que yo soy negro y boricua pero mas negro asi que yo nunca aprendió.
Yo esperar una persona quien es muy mejor a Espanol pueda ayudarte! Adios.
(Yo solo escribio ese para la premio!)
The time that a randomly selected individual waits for an elevator in an office building has a uniform distribution over the interval from 0 to 1 minute. For this distribution μ = 0.5 and σ = 0.289. (a) Let x be the sample mean waiting time for a random sample of 15 individuals. What are the mean and standard deviation of the sampling distribution of x? (Round your answers to three decimal places.) μx = σx = (b) Answer Part (a) for a random sample of 60 individuals. (Round your answers to three decimal places.) μx = σx = (please show working out)
(a) A random sample of 15 individuals, the mean of the sampling distribution (μx) is 0.5, and the standard deviation (σx) is approximately 0.074.
(b) A random sample of 60 individuals, the mean of the sampling distribution (μx) is 0.5, and the standard deviation (σx) is approximately 0.037.
(a) For a random sample of 15 individuals, the mean and standard deviation of the sampling distribution of x can be calculated using the following formulas:
μx = μ = 0.5 (since the population mean is given as μ = 0.5)
σx = σ / √n
= 0.289 / √15
≈ 0.074 (rounded to three decimal places)
Therefore, for a random sample of 15 individuals, the mean of the sampling distribution (μx) is 0.5, and the standard deviation (σx) is approximately 0.074.
(b) Similarly, for a random sample of 60 individuals, we can calculate the mean and standard deviation of the sampling distribution using the same formulas:
μx = μ = 0.5
σx = σ / √n
= 0.289 / √60
≈ 0.037 (rounded to three decimal places)
Therefore, for a random sample of 60 individuals, the mean of the sampling distribution (μx) is 0.5, and the standard deviation (σx) is approximately 0.037.
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FIND THE AREA OF THE SHADED SECTION IN THE CIRCLE THE SHADED SECTION IS 35 DEGRESS AND THE RADIUS IS 5 INCHES. USE THE FORMULA: M/360 TIMES PIE R SQUARED
Answer:
Area of sector of circle = 7.6302 inches (Approx.)
Step-by-step explanation:
Given:
Angle of section = 35°
Radius of circle = 5 inch
Find:
Area of shaded section
Computation:
Area of shaded section = Area of sector of circle
Area of sector of circle = [θ/360][πr²]
Area of sector of circle = [35/360][(22/7)(5)²]
Area of sector of circle = [0.0972][(3.14)(25)]
Area of sector of circle = [0.0972][78.5]
Area of sector of circle = 7.6302 inches (Approx.)
a. A potato is launched vertically upward with an initial velocity of 34ft / s from a potato gun at the top of a building that is 42 feet tall. The distance, in feet, that the potato travels after t seconds is given by s(t)=−16t2+34t+42 . Determine how long the potato is in the air. (Enter an exact answer.)
b.The cost function, in dollars, of a company that manufactures coffee makers is given by C(x)=155+66x+x236, where x is the number of coffee makers manufactured. Find the actual cost of manufacturing 24 coffee makers.
The potato is in the air for approx. 1.0625 seconds.
The actual cost of manufacturing 24 coffee makers is $1,755.67.
a. To find the time that a potato is in the air, use the quadratic equation formula where a=-16,
b=34, and
c=42. `
t = (-b ± sqrt(b²-4ac))/2a`.
Let's start by finding the discriminant first. `b²-4ac = (34)²-4(-16)(42)
= 1156`.
Substitute the values of a, b, and c into the quadratic formula.
t = (-34 ± sqrt(1156))/-32
= (-34 ± 34)/-32`.
There are two solutions to the quadratic equation. Thus, we need to check if there are any negative values for time.
t = (-34 + 34)/-32
= 0.
t = (-34 - 34)/-32
= 1.0625`.
Therefore, the potato is in the air for 1.0625 seconds.
b. To find the actual cost of manufacturing 24 coffee makers, substitute x=24 into the cost function
C(x) = 155 + 66x + x²/36`.
C(24) = 155 + 66(24) + 24²/36
= 155 + 1584 + 16.67`. `
C(24) = 1755.67`.
Therefore, the actual cost of manufacturing 24 coffee makers is $1,755.67.
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an iterative algorithm will usually run faster than an equivalent recursive algorithm. true or false
True, an iterative algorithm will usually run faster than an equivalent recursive algorithm. This is because iterative algorithms use loops to repeat a set of instructions, whereas recursive algorithms call themselves repeatedly until they reach a base case.
An iterative algorithm will usually run faster than an equivalent recursive algorithm. This is because recursive algorithms often involve function calls, which have overhead costs such as saving and restoring the call stack. In contrast, iterative algorithms use loops and do not require the same overhead, making them more efficient in terms of both time and memory usage.
However, it's important to note that some problems may be more elegantly or intuitively solved using recursion, even if it's less efficient. The repeated function calls in a recursive algorithm can lead to slower performance and higher memory usage compared to the more direct approach of an iterative algorithm.
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What is the radius for a circle whose equation is +=367
O A 18
OB. 1296
O C. 6
O D. 36
find the taylor polynomials p1, ..., p4 centered at a0 for f(x).
The Taylor polynomials P1, P2, P3, and P4 centered at a0 for f(x) are given as:P1(x) = 1P2(x) = 1 - x²/2!P3(x) = 1 - x²/2! + x⁴/4!P4(x) = 1 - x²/2! + x⁴/4! - x⁶/6!
We will apply the Taylor's theorem formula, which is supplied as follows, to determine the Taylor polynomials P1, P2, P3, and P4 centred at a0 for f(x) in the given question:f'(a)(x-a)/1 = f(x) = f(a) + f'(a)! + f''(a)(x-a)²/2! + ... + fⁿ(a)(x-a)ⁿ/n!We have f(0) = 1f'(0) = 0f''(0) = -1f'''(0) = 0f4(0) = 1 for f(x) = cos(x) at x = 0.We can get the following polynomial expressions by using these values in the Taylor's theorem formula:P1(x) = 1P2(x) = 1 - x²/2!P3(x) = 1 - x²/2! + x⁴/4!P4(x) = 1 - x²/2! + x⁴/4! - x⁶/6!Consequently, the Taylor polynomials P1, P2, P3, and P4 for f(x) are provided as follows:P1(x) = 1P2(x) = 1 - x²/2!P3(x) = 1 - x²/2! + x⁴/4!P4(x) = 1 - x²/2! + x⁴/4! - x⁶/6!
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Tell whether the two quantities vary directly. Explain your reasoning.
the number of correct answers on a test and the score on the test
Choose the correct answer below.
OA. No, they do not vary directly. When one quantity increases, the other quantity does not increase.
OB. No, they do not vary directly. When one quantity increases, the other quantity also increases.
C. Yes, they vary directly. When one quantity increases, the other quantity also increases.
OD. Yes, they vary directly. When one quantity increases, the other quantity does not increase.
The correct statement regarding the variation of the two measures is given as follows:
C. Yes, they vary directly. When one quantity increases, the other quantity also increases.
What are positive and negative association?Two variables have a positive association when the values of one variable increase as the values of the other variable increase, that is, the quantities vary directly.Two variables have a negative association when the values of one variable decrease as the values of the other variable increase, that is, the quantities vary inversely.For this problem, we have that when the number of correct answers on the test increases, the score also does, hence the two quantities vary directly, and option c is the correct option for this problem.
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Umm what do I do here?
Answer:
X is equal to 1.2
Step-by-step explanation:
6/5 equals 1.2
i don't have to sound rude but can i have brainliest please i need 4 more :')
A population of 75 foxes in a wildlife preserve triples in size every 13 years. the function y equals 75 times 3 superscript x , where x is the number of 13 -year periods, models the population growth. how many foxes will there be after 39 years?
Answer:
675 Foxes
Step-by-step explanation:
y=75*3x
39/13=3
y=75*3*3
y=75*9
y=675
What is the volume of the prisim?
This prism measures 3 units by 4 units by 2 units.
Answer:
24
Step-by-step explanation:
3*4*2=24
Adult tickets cost $17.95 and children’s tickets cost $12.95. Disney made $7355 from ticket sales from a total of 500 people. How many adults and children bought tickets?
Answer:
To figure out how many adults and children bought tickets, we can set up a system of equations using the information provided. Let x be the number of adults and y be the number of children. We know that:
x + y = 500 (because a total of 500 people bought tickets)
17.95x + 12.95y = 7355 (because the total revenue from ticket sales is $7355)
We can use the first equation to solve for one of the variables in terms of the other variable. For example, we can substitute y = 500 - x into the second equation:
17.95x + 12.95(500 - x) = 7355
This simplifies to:
17.95x + 6475 - 12.95x = 7355
5x = 1880
x = 376
so there are 376 adults bought tickets and 500-376=124 children bought tickets.
Step-by-step explanation:
Can yall help me please it's due for tomorrow
Answer:
I think it would be 160 degrees
Step-by-step explanation:
Answer:
160 degrees
Step-by-step explanation:
The whole protractor is 180 degrees. B is at the 180 mark but E is at 20. So, the the angle of BAE would be 180-20=160 degrees.
need help please help
Answer:
9 minutes
Step-by-step explanation:
The water volume in pool 1 starts at 50 gallons and increases at 2.3 gallons per minute. An expression for that volume could be ...
v = 50 +2.3t
The water volume in pool 2 starts at 102.2 gallons and decreases at 3.5 gallons per minute. An expression for that volume could be ...
v = 102.2 -3.5t
The volumes will be equal when ...
50 +2.3t = 102.2 -3.5t
5.8t = 52.2 . . . . . . . . . . . subtract 50-3.5t from both sides
t = 52.2/5.8 = 9 . . . . . . . divide by the coefficient of t
After 9 minutes, the pools will contain the same amount of water.
_____
The equation 5.8t = 52.2 tells you the 52.2 gallon difference in volumes is being reduced at the rate of 5.8 gallons per minute. You don't really need the 'v' equations to figure that out.
Simplify.11^10/11^3 x 11^5
Answer:19487171x161051
=19487171x161051
Step-by-step explanation:
Answer:
11^12 = 3,138,428,376,721
Step-by-step explanation:
The applicable rules of exponents are ...
(a^b)(a^c) = a^(b+c)
(a^b)/(a^c) = a^(b-c)
__
\(\dfrac{11^{10}}{11^3}\cdot 11^5=11^{10-3+5}=\boxed{11^{12}=3\,138\,428\,376\,721}\)
Sydney Ltd has the below data for a product:
Sales price
$12 per unit
Variable costs
$4 per unit
Fixed costs
$16 500
Units sold
10 400
How many units need to be sold in order to earn a target profit of $150 000?
Select one:
20,813
10,350
20,700
18,750
Sydney Ltd needs to sell 20,700 units of the product to earn a target profit of $150,000.
To calculate the number of units needed to be sold to achieve the target profit, we can use the formula: (Fixed costs + Target profit) / (Sales price - Variable costs).
Plugging in the given values, we have ($16,500 + $150,000) / ($12 - $4) = $166,500 / $8 = 20,812.5 units.
Since the number of units must be a whole number, we round down to the nearest whole number, which is 20,700 units.
Therefore, Sydney Ltd needs to sell 20,700 units of the product to earn a target profit of $150,000.
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17. a group of seven people have tickets to see a play. they are going to sit in a row of seven seats, with an aisle at each end of the row. one of the people needs to sit next to an aisle, because she must leave early. how many different ways can the people sit in the row?
In total, there are 6 * 6! = 720 different ways for the group of 7 people to sit in the row.
Seat Arrangement CalculationThe total number of ways to arrange a group of n people in a row is n!, which is the product of all the integers from 1 to n. However, in this case, we have a constraint that one of the people must sit next to an aisle. To find the number of ways to arrange the group of people given this constraint, we first need to determine the number of ways for the person who needs to sit next to the aisle to be placed.
Since there are 7 seats in the row, and the person must sit next to an aisle, there are 6 different spots where they can sit (either in the first seat, second seat, etc. up to the sixth seat). Once that person is placed, we can use the formula n! to find the number of ways to arrange the remaining people. In this case, there are 6 people remaining, so there are 6! ways to arrange them. To find the total number of ways to arrange the group of 7 people given the constraint, we multiply the number of ways to place the person next to the aisle (6) by the number of ways to arrange the remaining people (6!). So, 6*6! = 720.
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Joe made the drawing of his bedroom. The bedroom measures 3.25 inches by 4.75 inches on the drawing. What is the perimeter of his actual bedroom if the drawing has a scale of 1 inch : 4 feet?
Answer:
64 ft
Step-by-step explanation:
The perimeter of the drawing is
2(3.25 in. + 4.75 in.) = 16 in.
Now we use the scale to find the real perimeter.
1 in. : 4 ft
16 * 1 in. : 16 * 4 ft
16 in. : 64 ft
The real perimeter is 64 ft.
please help asap! thank you
Venty the identity. \[ \sin x=\sec x=\tan x \] To veify the identity, start with the more conplicaled side and transform it to look like the other side. Choose the correct transtormations and transfor
$$\sin x=\sec x=\tan x$$
To verify the identity, start with the more complicated side, which is the left-hand side and transform it to look like the other side.
We will use the basic identities to transform the left-hand side:
$$\sin x=\frac{1}{\cos x}=\frac{\sin x}{\cos x}=\tan x$$
The identity is verified. The above transformation can be explained as follows:
$$\sin x=\frac{1}{\cos x}$$
Multiply the above expression by $\frac{\sin x}{\sin x}
$:$$\frac{\sin x}{\sin x}\sin x=\frac{\sin x}{\sin x}\frac{1}{\cos x}$$
Simplifying:$$\frac{\sin^2x}{\sin x}=\tan x$$
Now, substitute $\sin^2x$ with $1-\cos^2x$ (using $\sin^2x+\cos^2x=1$):
$$\frac{1-\cos^2x}{\sin x}=\tan x$$
Dividing both sides by $\cos x$:
$$\frac{1}{\cos x}-\cos x=\frac{\sin x}{\cos x}$$$$\sec x-\cos x=\frac{\sin x}{\cos x}$$$$\sin x=\sec x=\tan x$$
The identity is verified.
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Please Help. I really don’t get this concept, if you could explain it in detail it would be very appreciated
=================================================
Explanation:
Sine is given to be negative, and so is tangent. This only happens in quadrant Q4
Recall that y = sin(theta), so if sin(theta) < 0, then we're below the x axis.
If tan(theta) < 0, then this means cos(theta) > 0
So we have y < 0 and x > 0 which places the angle somewhere in Q4.
--------------------------
Draw a right triangle as shown below in the attached image. We have AC = 25 and BC = 7. Use the pythagorean theorem to find that AB = 24
So this is what your steps may look like
a^2+b^2 = c^2
7^2+b^2 = 25^2
b^2+49 = 625
b^2 = 625-49
b^2 = 576
b = sqrt(576)
b = 24
So because AB = 24, we know that the cosine of the angle is adjacent/hypotenuse = 24/25
---------------------------
As an alternative, you could use the trig identity
sin^2(x) + cos^2(x) = 1
and plug in the given value of sine to solve for cosine. The cosine value result will be positive since we're in Q4.
So,
sin^2(x) + cos^2(x) = 1
(-7/25)^2 + cos^2(x) = 1
(49/625) + cos^2(x) = 1
cos^2(x) = 1 - (49/625)
cos^2(x) = (625/625) - (49/625)
cos^2(x) = (625-49)/625
cos^2(x) = 576/625
cos(x) = sqrt(576/625)
cos(x) = sqrt(576)/sqrt(625)
cos(x) = 24/25
This is effectively a rephrasing of the previous section since the pythagorean trig identity is more or less the pythagorean theorem (just in a trig form)
help meeeeeeeeeeee pleaseeeeeeeeeee rn rnnnnnnnnn!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
help meeeeeeeeeeee pleaseeeeeeeeeee rn rnnnnnnnnn!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The equation of the parabola that similar to f(x) = \(7x^2\) but the vertex is (3, 5) in the standard form is y = \(7(x-3)^2\) + 5
The equation of the parabola
f(x) = \(7x^2\)
The standard vertex form of a parabola is
y = \(a(x-h)^2\) + k
The coordinates of the vertex of a parabola = (3, 5)
Where (h, k) is the coordinates
From the given function of the parabola f(x) = \(7x^2\)
The value of a = 7
Substitute the values in the vertex form of a parabola
y = \(7(x-3)^2\) + 5
Hence, the equation of the parabola that is similar to f(x) = \(7x^2\) but the vertex is (3, 5) in the standard form is y = \(7(x-3)^2\) + 5
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Find the value of x (Round to the nearest tenth) **Hint: Find the length
of the dotted line first***
Helppp!!!!!!!
Answer:
Length equal 12
Step-by-step explanation:
16^2+b^2=20^2
256+b^2=400 (subtract 256 on both sides)
b^2=144 (square root)
b=12
Consider the points below. P(θ),−4,0),Q(5,1,−2),R(6,4,1) (a) Find a nonzero vector orthogonal to the plane through the points P,Q, and R. (b) Find the area of the triangle PQR.
(a) A nonzero vector orthogonal to the plane through the points P, Q, and R is (9, -17, 35). (b) The area of triangle PQR is \(\sqrt\)(811) / 2.
(a) To determine a nonzero vector orthogonal to the plane through the points P, Q, and R, we can first find two vectors in the plane and then take their cross product. Taking vectors PQ and PR, we have:
PQ = Q - P = (5, 1, -2) - (-4, 0, 0) = (9, 1, -2)
PR = R - P = (6, 4, 1) - (-4, 0, 0) = (10, 4, 1)
Taking the cross product of PQ and PR, we have:
n = PQ x PR = (9, 1, -2) x (10, 4, 1)
Evaluating the cross product gives n = (9, -17, 35). Therefore, (9, -17, 35) is a nonzero vector orthogonal to the plane through points P, Q, and R.
(b) To determine the area of triangle PQR, we can use the magnitude of the cross product of vectors PQ and PR divided by 2. The magnitude of the cross product is given by:
|n| = \(\sqrt\)((9)^2 + (-17)^2 + (35)^2)
Evaluating the magnitude gives |n| = \(\sqrt\)(811).
The area of triangle PQR is then:
Area = |n| / 2 = \(\sqrt\)(811) / 2.
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The ratio of boys to girls in a water safety class is 30 boys to 45 girls. Which is an equivalent ratio?
Answer:
the equivalent ratio in the question above is 2:3
Laila needs a new bike mirror. Her old mirror was a square with a side length of 7 cm. She wants
the new mirror to have approximately the same area as her old bike mirror.
Which circular bike mirror should Laila buy?
4 cm
7 cm
8 cm
In a case whereby Laila needs a new bike mirror. Her old mirror was a square with a side length of 7 cm the circular bike mirror Laila should buy is 4 cm.
How can the circular bike mirror be determined?Given that the side length = 7 cm
Then we can know the Old mirror's area using the formula
Area = (S X S)
Where S is the side
=( 7 x 7 )
= 49cm2
Then from the information from the question, we can equate the area of the old and the new as
(Area of old mirror = Area of new mirror)
where Area of new mirror = πr^2
(49 = πr^2)
49 = (22/7 * r^2)
r^2 = 49 *7/22
r= 3.948 cm
r = 4cm
If we approximate it , hence option A is correct.
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A backpack at the store cost $24.49. A pack of markers at the same store cost $3.82. You pay for both the backpack and pack of markers with a $50 bill. How much change will you receive?
Answer:
You will receive $21.69, assuming there's no tax ;).
I added the 24.49 to the 3.82 and got 28.31, then subtracted that from 50.
Find the simplified product.
8 / x^2 + 6x • 2x
Answer:
16/x+6
Step-by-step explanation:
Answer:
Hello!
__________________
Your answer would be ( B ) 16/x+6
Hope this helped you!
:D
Which of the following is true about the additive identity?
O The additive identity works with decimals, but not fractions.
OIf x is the additive identity, then x + y = x.
OIt is neither positive nor negative.
The additive identity of a number is the distance from 0 to that number on the number line.
Please help me !! would appreciate
The answers that describe the quadrilateral DEFG area rectangle and parallelogram.
The correct answer choice is option A and B.
What is a quadrilateral?A quadrilateral is a parallelogram, which has opposite sides that are congruent and parallel.
Quadrilateral DEFG
if line DE || FG,
line EF // GD,
DF = EG and
diagonals DF and EG are perpendicular,
then, the quadrilateral is a parallelogram
Hence, the quadrilateral DEFG is a rectangle and parallelogram.
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What is the domain of f(x) = 3√x? all real numbers positive numbers and zero all integers whole numbers
Answer:
B. positive numbers and zeroStep-by-step explanation:
This is a square root function:
f(x) = 3√xThe domain is the x-values which include all non-negative real numbers
Correct choice is B
Answer:
All real numbers positive numbers and zero.
Step-by-step explanation:
Domain: set of all possible input values (x-values)
Range: set of all possible output values (y-values)
Given function:
\(f(x)=3 \sqrt{x}\)
As the square root of x is undefined for negative real numbers, the domain is positive numbers and zero.
The largest value of the domain is unbounded, so the domain in interval notation is [0, ∞).
A line passes through the points (-6,-8) and (-3,-7) what is the equation of the line in Slope Intercept Form
A
B
C
D
shown in picture
Answer:
Your answer is B) \(y=\frac{1}{3}x-6\)