2% of what number is 91 ?
Answer:
4550
Step-by-step explanation:
Answer:
4,550
Step-by-step explanation:
4,550 x 2% = 91
(b) What is the probability that a simple random sample of 55 unemployed individuals will provide a sample mean within 1 week of the population mean? (Round your
answer to four decimal places.)
0.3653
x
(c) What is the probability that a simple random sample of 55 unemployed individuals will provide a sample mean within week of the population mean? (Round your
answer to four decimal places.)
The probability is [tex]0.0922 approx[/tex] [tex]9.22%[/tex]%
What do you mean by probability?Probability theory is an area of mathematics that determines the likelihood that an event will occur or a claim will be true.
The probability of an event is a number between[tex]0[/tex] and [tex]1[/tex], where [tex]0[/tex] is the likelihood of the event occurring and [tex]1[/tex] is the chance that it will happen.
The probability that a certain event will occur is simply represented numerically as a probability.
The percentages [tex]0%[/tex]% to [tex]100%[/tex]% or even[tex]0[/tex] to[tex]1[/tex] can be used to express probabilities.
The probability of occurrence in an entire set of equally likely possibilities that results in a particular event divided by the number of outcomes.
We need to know the standard deviation of the sampling distribution of the mean in order to calculate the likelihood that the sample mean will be within one week of the population mean.
The standard error of the mean can be calculated as follows if the population standard deviation is known:
These steps are used to compute standard error: sample size squared / standard deviation of the population
If the sample standard deviation is unavailable, we can estimate the population standard deviation and compute the standard error of the mean as follows:
These steps are used to compute standard error: sample size squared / standard deviation of the population
If we assume that the population's standard deviation is [tex]1[/tex], we can use the standard error of both the mean formula to determine
The probability that a simple random sample of [tex]55[/tex] unemployed people will somehow generate a sample mean that is within one week of the population average. In this context, "within one week" means within one standard error of something like the population mean, or one.
The standard error of the mean for a sample size of [tex]55[/tex]
Standard error =[tex]\frac{1}{\sqrt{55} }[/tex]
error ≈[tex]0.1348[/tex]
To find the probability that a sample mean is within one standard deviation of the population mean, we can use the standard normal distribution with a mean of [tex]0[/tex] and a standard deviation of [tex]1[/tex].
We want to find the probability that a z-score is between [tex]-1 and 1[/tex], which represents one standard deviation from the mean.
This chance is roughly [tex]0.6827[/tex], as determined by a calculator or a conventional normal distribution table.
In light of this, the probability that a straightforward random sample of [tex]55[/tex] unemployed people will yield a possession of tiny sums that is close to the population mean in just one week is approximately:
[tex]0.6827*0.1348= 0.0922[/tex](rounded to four decimal places) (rounded to four decimal places)
Therefore , the probability is [tex]0.0922[/tex], or roughly[tex]9.22%[/tex]%.
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Find x round to the nearest 100th
in exercises 1 and 2 find the scale factor. then list all pairs of congruent angles and write the ratios of the corresponding side lengths in a statement of proportionality
Answer:
Step-by-step explanation:
99+988
(f+g)(x)= f(x) * g(x)
true or false
Answer:
true
Step-by-step explanation:
POSSIBLE POINTS: 18.18
A sequence of transformations is applied to a polygon. Which of the following statements represent a sequence of transformations where the
resulting polygon is similar to the original polygon but has a smaller area than the original polygon? Select TWO that apply.
a reflection over the y-axis followed by a translation of 10 units down and a dilation about the origin by a scale factor of 2
a dilation about the origin by a scale factor of 2/3 followed by a rotation of 90° counterclockwise about the origin and a translation 5
units left
a rotation of 180° counterclockwise about the origin followed by a dilation about the origin by a scale factor of 5/2
a dilation about the origin by a scale factor of 5/7 followed by a reflection over the y-axis and a dilation about the origin by a scale
factor of 3/4
Answer:
C, D
Step-by-step explanation:
Any rigid transformation (rotation, translation, reflection) will result in a congruent polygon. To make a similar (smaller) polygon, a dilation by a factor less than 1 must be used.
C. a dilation about the origin by a scale factor of 2/3 followed by a rotation of 90° counterclockwise about the origin and a translation 5 units left
D. a dilation about the origin by a scale factor of 5/7 followed by a reflection over the y–axis and a dilation about the origin by a scale factor of 3/4
9. Evaluate if p =-7, q = -2.
a. p + q
b. p - q
c. q - p
d.-p - q
Answer:
d
Step-by-step explanation:
trust me bro im a math teacher
Ruth has $4,942 in an account that earns 12% interest compounded annually.
To the nearest cent, how much will she have in 1 year?
Ruth will have the principal is approximately $5,534.04 in 1 year at earns 12% interest compounded annually.
What is principal?
To find how much Ruth will have in 1 year, we can use the formula for compound interest:
A = [tex]P(1 + r/n)^{n*t}[/tex]
where A is the amount after t years, P is the principal (initial amount), r is the annual interest rate (as a decimal), n is the number of times interest is compounded per year, and t is the number of years.
Plugging in the given values, we get:
A = [tex]$4,942(1 + 0.12/1)^{1*1}[/tex]
A = $4,942(1.12)
A = $5,534.04
Therefore, Ruth will have approximately $5,534.04 in 1 year.
What is an interest?
Interest is the amount of money charged by a lender to a borrower for the use of money over a period of time. It is typically calculated as a percentage of the amount borrowed or invested, and is often expressed as an annual percentage rate (APR). Interest can be simple or compound, depending on whether it is calculated only on the principal amount or on both the principal and accumulated interest. Interest is an important concept in finance and economics, and is used in a wide range of financial transactions, including loans, investments, and savings accounts.
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Help with this question
Answer:
(x - 4)(x - 7)
Step-by-step explanation:
x² - 11x + 28
consider the factors of the constant term (+ 28) which sum to give the coefficient of the x- term (- 11)
the factors are - 4 and - 7 , since
- 4 × - 7 = + 28 and - 4 - 7 = - 11
then
x² - 11x + 28 = (x - 4)(x - 7) ← factored form
Please help with solving this problem
Answer:
Step-by-step explanation:
Answer:
the first car drove 30 miles and the second drove 35
Step-by-step explanation:
1. add how many mile they can travel together.
15+20=35
2. subtract 35 from 65 and whats left is how youll determine which car drove how many the lower number goes to the lower miled vehicle.
[Maximum mark: 5] The diagram shows a sector AOB of a circle with centre O and radius r. The triangle AOB is equilateral and has perpendicular height 5 cm.
a) show that the radius of the sector is 10√3/3 cm.
b) find in terms of π, the perimeter P of the sector.
Answer:
Step-by-step explanation:
In (b) you may be more used to the formula for arc length: [tex]P=\frac{\theta }{180} \times \pi r[/tex].
The result is the same.
Is the slope of the line illustrated in the graph below positive or negative?
Moving from left to right, the line starts in the upper left-hand quadrant, passes through the x-axis into the lower left-hand quadrant, and then crosses the y-axis, passing into the lower right-hand quadrant.
Answer: change in y divided by change in x
Step-by-step explanation: The slope of a line is a measure of its steepness. Mathematically, slope is calculated as "rise over run"
Which quadrilateral has one, and only one, line of symmetry?
rectangle square isosceles trapezoid or parallelogram?
Use an identity to write the expression as a single trigonometric function or as a single number. sin 28⁰/ 1 + cos 28°
Answer: We can simplify the expression by using the identity for the tangent of half an angle:
tan(x/2) = sin(x) / (1 + cos(x))
where x is the angle in radians. We can use this identity by setting x = 56° since 2*28°= 56°.
So, we have:
sin(28°) / (1 + cos(28°)) = tan(56°/2)
We know that 56°/2 = 28°, so we have:
tan(28°)
Therefore, the expression simplifies to a single trigonometric function:
tan(28°)
Step-by-step explanation:
The radius of a sphere is 10 units. Find the volume of the sphere. Write your answer in terms of pi. The volume is __cubic units
Answer:
4000/3 * π
Step-by-step explanation:
The formula for the volume of a sphere is;
V = (4/3) * π * r^3
Where;
r = the radius of the sphere
Substituting the given value, we get;
r = 10
V = (4/3) * π * (10)^3
= (4/3) * π * 1000
= 4000/3 * π
Therefore the volume of the sphere is (4000/3)π cubic units.
A group of people were asked if they had run a red light in the last year. 220 responded "yes", and 209 responded "no".
Answer:
[tex]\frac{20}{19}[/tex] or ≈ 1.053
Step-by-step explanation:
We Know
220 responded 'yes', and 209 responded 'no'
Find the probability that if a person is chosen at random, they had run a red light in the last year.
The probability is: [tex]\frac{220}{209}[/tex] = [tex]\frac{20}{19}[/tex] ≈ 1.053
So, the answer is [tex]\frac{20}{19}[/tex] or ≈ 1.053
I’m a certain magnetic field the cross-sectional area is 0.5 meter square and the flux is 1500 uwb what is the flux density
The flux density is 3000 uT.
Flux density (B) is a measure οf the strength οf a magnetic field in a given regiοn.
Hοw tο calculate flux density fοr the given prοblem?It is defined as the amοunt οf magnetic flux () that passes thrοugh a unit area (A) perpendicular tο the magnetic field's directiοn.
The flux density (B) can be calculated using the fοrmula:
B = Φ / A
where 'Φ' is -> flux and A is the -> crοss-sectiοnal area.
Plugging in the values given, we get:
B = 1500 uWb / 0.5 m²
B = 3000 uT (micrοtesla)
Therefοre, the flux density is 3000 uT.
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Given Z₁= 2+j4, and Z₂ = 3-j, determine: i Z₁+Z2 ii Z₁-Z₂ iii Z₂-Z₁ iv Show the results on an Argand diagram.
The coordinate of the complex numbers are plotted on a graph below
What are the values of the complex numbersi) Z₁ + Z₂ = (2+j4) + (3-j) = (2+3) + (j4-j) = 5 + j3
ii) Z₁ - Z₂ = (2+j4) - (3-j) = (2-3) + (j4+j) = -1 + j5
iii) Z₂ - Z₁ = (3-j) - (2+j4) = (3-2) + (-j-4j) = 1 - j5
iv) To represent these complex numbers on an Argand diagram, we plot the real part on the x-axis and the imaginary part on the y-axis.
Z₁ = 2 + j4 can be represented as a point in the complex plane with coordinates (2,4).
Z₂ = 3 - j can be represented as a point in the complex plane with coordinates (3,-1).
Using these coordinates, we can plot the results from parts (i) to (iii) as follows:
(i) Z₁ + Z₂ = 5 + j3 can be represented as a point in the complex plane with coordinates (5,3).
(ii) Z₁ - Z₂ = -1 + j5 can be represented as a point in the complex plane with coordinates (-1,5).
(iii) Z₂ - Z₁ = 1 - j5 can be represented as a point in the complex plane with coordinates (1,-5).
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Linearise cos^5(x). Help asap please
detailed answer (so much details are needed)
the answer should be:
[tex]\frac{1}{16} *(cos5x +5cos3x+10cosx)[/tex]
The final answer for linearizing the function f(x) = cos^5(x) around a = 0 is:
f(x) ≈ 1.
What is linearizing?Linearizing a function is the process of approximating the behavior of a function by a linear function (i.e., a function of the form y = mx + b) in a certain region around a specific point.
Linearization is useful because linear functions are easy to work with mathematically, and they can provide a good approximation of the original function near the point of interest. By linearizing a function, we can simplify calculations and make predictions about the behavior of the function in the vicinity of the point of interest.
In the given question,
To linearize the function f(x) = cos^5(x) around a point a, we can use the first two terms of the Taylor series expansion:
f(x) ≈ f(a) + f'(a)(x - a)
where f'(a) is the first derivative of f evaluated at x = a.
In this case, we want to linearize around a = 0, so we have:
f(x) ≈ f(0) + f'(0)(x - 0)
To find f(0) and f'(0), we need to evaluate the function and its derivative at x = 0:
f(x) = cos^5(x)
f(0) = cos^5(0) = 1
f'(x) = 5cos^4(x)(-sin(x))
f'(0) = 5cos^4(0)(-sin(0)) = 0
Therefore, the linearization of f(x) = cos^5(x) around a = 0 is:
f(x) ≈ 1 + 0(x - 0) = 1
So the linearization is simply the constant function f(x) = 1. This means that for small values of x, the function cos^5(x) can be approximated by the constant function 1. The accuracy of this approximation depends on how small x is and how far away x is from 0.
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Type your response in the box.
Think about the impact on the consumer as you read these scenarios. Then answer the question that follows.
Scenario 1
Carlos is doing his weekly grocery shopping and needs to buy cereal. He turns his cart into the cereal aisle at the store. He sees many different cereals within his price range but notices that some are priced higher than others. He chooses a cereal he recognizes from a TV commercial, even though it’s slightly more expensive than he expected.
Scenario 2
Evelyn wants to purchase a plane ticket to visit her sister in London. She’s been checking prices frequently the past few days and notices that prices aren’t falling as she anticipated. She also notices that despite five airlines flying to London from the city she lives in, the prices of the tickets are all the same. She eventually decides not to go because the prices are too high for her budget.
What affected the purchasing decisions in these two scenarios?
The purchasing decisions in both scenarios were affected by the prices of the products/services being considered.
What is meant by budget?
In general, a budget is a financial plan or estimate that outlines the expected income and expenses over a specific period.
The purchasing decisions in both scenarios were affected by the prices of the products/services being considered.
In scenario 1, Carlos chose a more expensive cereal because he recognized it from a TV commercial, which may have influenced his perception of its quality or desirability.
In scenario 2, Evelyn decided not to purchase a plane ticket because the prices were too high for her budget, despite there being multiple airlines offering flights to London.
Therefore,The purchasing decisions in both scenarios were affected by the prices of the products/services being considered.
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What is the volume of the solid figure?
Enter your answer in the box.
A long rectangular prism on top of another shorter rectangular prism. The top prism measures 10 feet by 4 feet by 3 feet. The bottom prism measures 2 feet by 4 feet by 4 feet.
What is a rectangular prism?
A right rectangular prism is a box-shaped object, that is, a 3-dimensional solid which has six rectangular faces. Rectangular prisms can also be oblique - leaning to one side - but the side faces are parallelograms, not rectangles. A right rectangular prism is also called a cuboid, box, or rectangular hexahedron. Moreover, "rectangular prism" and "right rectangular prism" are often used interchangeably.
The most common math problems related to this solid are of the type right rectangular prism calc find V or find A, where the letters stand for the Volume and Area, respectively. Let's see the necessary rectangular prism formula and learn how to solve those problems quickly and easily.
How do I find the volume of a rectangular prism?
The rectangular prism volume formula is:
volume = h × w × l,
where h is prism height, w is its width, and l is its length. To calculate the volume of a cardboard box:
Find the box length. For example, it can be equal to 18 in.
Determine its width. Let's say you measured 12 in.
Find out the rectangular prism height. Assume it's 15 in.
Calculate the cuboid volume. Using the rectangular prism volume formula above, we get volume = (18 × 12 × 15) in = 3240 in³.
How do I find the area of a rectangular prism?
The surface area of the cuboid consists of 6 faces - three pairs of parallel rectangles. To find the rectangular prism surface area, add the areas of all faces:
surface_area = 2 × (h × w) + 2 × (h × l) + 2 × (l × w) = 2 × (h × w + h × l + l × w),
where h is prism height, w is its width, and l is its length.
Let's see an example of how to solve the right rectangular prism calc - find A problem. We'll come back to our example with the box and calculate its surface area:
Calculate the rectangular prism surface area. First rectangle area is 15in × 12in = 180in², second 15in × 18in = 270in² and third one 18in × 12in = 216in². Add all three rectangles' areas - it's equal to 666 in² (what a number!) - and finally multiply by 2. The surface area of our cardboard box is 1332in².
Or save yourself some time and use our rectangular prism calculator.
Finally, let's attack the right rectangular prism calc find d (that is, the diagonal) type of problem.
How do I calculate the diagonal of a rectangular prism?
To determine the diagonal of a rectangular prism, apply the formula:
diagonal = √(l² + h² + w²)
where h is prism height, w is its width, and l is its length.
Do you have the feeling that you saw the formula before? Yes, that's possible because this equation resembles the famous one from the Pythagorean theorem.
URGENT: Describes the relationship between the line that passes through (7,1) and (10,5) and the line that passes through (-8,5) and (-5,9)
The relationship between the lines are they have same slope and they are parallel.
What is slope?
If [tex](x_1,y_1) \: and \: (x_2,y_2) [/tex] are two points on line then slope of the line will be [tex]m= \frac{(y_2 - y_1)}{(x_2 - x_1)}[/tex]
To determine the relationship between the two lines, we need to find out if they are parallel, perpendicular, or neither.
First, we can find the slope of the line passing through (7,1) and (10,5) using the slope formula:
[tex]m_1 = \frac{(y_2 - y_1)}{(x_2 - x_1)} \\ m_1 = \frac{ (5 - 1)}{(10 - 7)} \\ m_1 = \frac{4}{3} [/tex]
Similarly, we can find the slope of the line passing through (-8,5) and (-5,9):
[tex]m_2 = \frac{ (y_2 - y_1) }{ (x_2 - x_1)} \\ m_2 = \frac{(9 - 5) }{(-5 - (-8))} \\ m_2 = \frac{4}{3} [/tex]
Since both lines have the same slope of 4/3, they are parallel to each other.
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You are instructed to package chocolate boxes with a total weight of 500 grams each. However, due to natural variation in the weight of the chocolates, the total weight of each box is likely to differ from 500 grams. The historical variation in weight reveals a standard deviation of 14.14. What is the probability of finding a box that differs from the desired weight by more than 12 grams? Round your answer to the fourth decimal.
We can conclude after answering the presented question that As a probability result, the likelihood of discovering a package that deviates from the target weight by more than 12 grammes is around 0.4014.
What is probability?Probability is a measure of how likely an event is to occur. It is represented by a number between 0 and 1, with 0 representing a rare event and 1 representing an inescapable event. Switching a fair coin and coin flips has a chance of 0.5 or 50% because there are two equally likely outcomes. (Heads or tails). Probabilistic theory is an area of mathematics that studies random events rather than their attributes. It is applied in many fields, including statistics, economics, science, and engineering.
The mean of the box's overall weight is:
n * mu X = mu Y
With a mean weight of 500/n grammes for each chocolate, we get:
mu Y =n * (500/n) = 500
The standard deviation of the box's total weight is:
sqrt(n) * sigma X = sigma Y
When we substitute the provided values, we get:
= 2 * P(Z > 0.8485)
= 2 * (1 - P(Z < 0.8485))
= 2 * (1 - 0.7993) (1 - 0.7993)
= 0.4014 (rounded to four decimal places) (rounded to four decimal places)
As a result, the likelihood of discovering a package that deviates from the target weight by more than 12 grammes is around 0.4014.
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Triangle ABC is reflected over the line y=2 to obtain triangle A'B'C'. Then triangle A'B'C' is translated by the directed line segment from (0,0) to (3,2) to obtain triangle A"B"C".
Answer: To obtain triangle A'B'C' from triangle ABC by reflection over the line y = 2, we reflect each point of the triangle over the line. This gives us:
A' = (A_x, 4 - A_y)
B' = (B_x, 4 - B_y)
C' = (C_x, 4 - C_y)
To obtain triangle A"B"C" from triangle A'B'C' by translation by the directed line segment from (0,0) to (3,2), we add the vector (3,2) to each point of the triangle. This gives us:
A" = (A'_x + 3, A'_y + 2) = (A_x + 3, 6 - A_y)
B" = (B'_x + 3, B'_y + 2) = (B_x + 3, 6 - B_y)
C" = (C'_x + 3, C'_y + 2) = (C_x + 3, 6 - C_y)
Therefore, the vertices of triangle A"B"C" are (A_x + 3, 6 - A_y), (B_x + 3, 6 - B_y), and (C_x + 3, 6 - C_y).
Step-by-step explanation:
Jose bought 100 shares of stock at 17 5/8 and sold it for 21 1/4. What was his profit in dollars
Answer: 3.625 or 3 5/8
Step-by-step explanation:
So I personally would turn everything into decimals and subtract.
21.250 -17.625
And using our handy calculator, you get
3.625
Can anyone help me answer this? the question is given below?
For the second attachment was the question
The average rate of change of the function is 3.
How to find the average rate of change of a function?The average rate of change of a function is given by the formula:
average of change = (f(b) - f(a)) / (b - a)
Where [a, b] is the interval of the function
f(x) = x³ + 2x; [-1, 1]
average rate of change = ([ 1³ + 2(1)] - [ (-1)³ + 2(-1)]) / (1 - (-1))
average rate of change = (3 - (-3))/(1 + 1)
average rate of change = 6/2
average rate of change = 3
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20-4=5908
is it true or is it not
Answer: Not true
Step-by-step explanation:
This isn't true.
There is no way to manipulate the number 20 to get the number 5908 by subtraction or any other arithmetic operation.
Therefore, "20-4=5908" is false.
Which expression is a factor of 2x^2 + 10x -48
Answer choices
A : x + 3
B: x-6
C: x+8
D: x+16
Answer:
[tex]2 {x}^{2} + 10x - 48[/tex]
[tex]2( {x}^{2} + 5x - 24)[/tex]
[tex]2(x + 8)(x - 3)[/tex]
So C is correct.
suzie lives in dauphin manitoba. she wants to buy a new truck. the base price is $27 280. she has $2450 for a down payment. she must pay the extra changes at the right. how much must suzie pay on delivery
Suzie must pay $27,864 on delivery for the new truck. To determine how much Suzie must pay on delivery, we need to add the extra charges to the base price of the truck and subtract the down payment she already made.
Let's first list the extra charges:
Freight and PDI: $1,650
Air Tax: $100
Tire Tax: $20
GST (Goods and Services Tax): 5%
To calculate the extra charges, we can use the following formula:
Extra charges = Freight and PDI + Air Tax + Tire Tax + (GST x Base Price)
Substituting the given values, we get:
Extra charges = 1650 + 100 + 20 + (0.05 x 27280)
Extra charges = 1650 + 100 + 20 + 1364
Extra charges = 3134
Therefore, the total cost of the truck, including extra charges, is:
Total cost = Base price + Extra charges - Down payment
Total cost = 27280 + 3134 - 2450
Total cost = 27864
Thus, Suzie must pay $27,864 on delivery for the new truck.
It's important to note that the amount Suzie will actually pay will depend on the financing and payment options available to her. She may be able to spread out the payments over a longer period of time or negotiate a different down payment amount. It's always a good idea to research and compare different financing options before making a major purchase like a new vehicle.
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Consider the set K = (triangle upsidedown triangle square rectangle)
Let inversion be defined on K as a physical act of turning a member of K upside down. What is triangle?
If inversion be defined on K as a physical act of turning a member of K upside down. Then it will be the upside-down triangle.
consider the set K = (triangle, upside-down triangle, square, rectangle). Inversion is defined on K as the act of turning a member of K upside down.
To determine which shape is the triangle, follow these steps:
1. Identify the properties of each shape in set K:
- Triangle: 3 sides and 3 angles
- Upside-down triangle: same properties as a triangle, but inverted
- Square: 4 sides, all equal in length, and 4 right angles
- Rectangle: 4 sides, opposite sides equal in length, and 4 right angles
2. Analyze the effect of inversion on each shape:
- Triangle: Inverting a triangle results in an upside-down triangle.
- Upside-down triangle: Inverting an upside-down triangle results in a regular triangle.
- Square: Inverting a square does not change its appearance.
- Rectangle: Inverting a rectangle does not change its appearance.
3. Identify the shape that becomes a triangle after inversion:
- The upside-down triangle becomes a regular triangle after inversion.
So, the shape in set K that corresponds to the triangle after applying inversion is the upside-down triangle.
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