1600 watt electric oven is used for 9 hours. calculate the cost of #3 per unit energy

Answer:

900 seconds I believe

Step-by-step explanation:

60*6= 360

9*60=540

540+360=900

According to Weber's law, two items must differ in weight by "5 percent"of weight in order to detect a difference.

We are given that Weber's law

For weight discrimination, Weber’s law states that the JND is proportional to the weight of the stimulus.

The JND is defined as the smallest difference between two weights that can be detected by an observer.

The proportionality constant is known as Weber’s fraction and varies depending on the type of stimulus and the sensory modality involved.

For weight discrimination, Weber’s fraction is typically around 2-3%.

This means that two items must differ in weight by approximately 2-3% of their weight in order to detect a difference.

The difference of weight in percent is 5%, the correct option is A.

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Standard deviation is the square root of variance .

So,

It is used in measuring any deviation or shift from the calculated mean.  

From a data set, the mean of the data can be determined with which the standard deviation can be measure.

Therefore, Standard deviation is use to measure variation that exist in an individual data set. There are different type of data set from which variation is measured.

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Answer:

I don’t think it wanted a triangle

Step-by-step explanation:

A systematic random sample is obtained by choosing a random starting point and then selecting every kth individual from a population to participate in the study. The number of random numbers that must be produced to recognize individuals who are part of the sample is determined by the following formula:n/k is the number of random numbers required to identify the sample population of size n drawn from a population of size N by systematic random sampling.

To provide an example, consider a population of size N= 1000 and a sample of size n= 50. Assume that we must use systematic random sampling with a k=20. The population should be numbered, and the first random number between 1 and 20 is selected. The kth person after the first random number is chosen. This process is repeated for the entire population, with every kth person included in the sample. The number of random numbers generated would be 1000/20= 50. Therefore, to obtain a sample of 50 individuals, we must generate 50 random numbers to recognize each individual who will be included in the sample.

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In Microsoft PowerPoint 2016, under the Slide Master tab, you will find six command groups. The names of these command groups are:

1. Edit Master: This command group allows you to modify the overall design and layout of the slide master, including background styles, fonts, and placeholders.

2. Background: This command group provides options to customize the background of the slide master, such as applying a solid color, gradient, texture, or picture.

3. Layout: The Layout command group allows you to manage the layout of slides within the slide master. You can add or modify placeholders for text, images, charts, and other content elements.

4. Colors: This command group enables you to choose and apply different color schemes to the slide master, affecting the colors used throughout the presentation.

5. Fonts: The Fonts command group allows you to select and apply specific font styles to the slide master, which will influence the text appearance in your presentation.

6. Arrange: This command group provides options for arranging and aligning objects within the slide master, such as bringing objects to the front or back, aligning them, and distributing them evenly.

These command groups offer a range of customization options to help you design and modify the slide master in PowerPoint 2016.

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In a given permutation of 52 cards, if the 3 of spades is to follow all of the hearts, that means the 3 of spades must be at least the 14th card in the deck.

Consider some possible orderings of the deck:

• If the 3 of spades is the 14th card, then the deck looks like

[all 13 ♥] … 3 ♠ … [all other 38 cards]

There are 13! ways to arrange the 13 hearts at the beginning and 38! ways to arrange the tail of 38 cards. Hence there are 13! × 38! possible rearrangements of the deck where 3 ♠ is the 14th card.

• If 3 ♠ is the 15th card, then the deck looks like

[13 ♥ and 1 other] … 3 ♠ … [all other 37 cards]

and there would be 14! × 37! ways of arranging the cards in this order.

There are 39 possible positions for 3 ♠. Extrapolating, it follows that the total number of permutations of the deck in which all hearts occur before 3 ♠ is

\(\displaystyle \sum_{k=0}^{38} (13+k)! \times (38-k)!\)

There are 52! total possible ways of rearranging the deck. Then the probability of rearranging the deck so that all hearts are drawn before 3 ♠ is

\(\displaystyle \frac1{52!} \sum_{k=0}^{38} (13+k)! \times (38-k)! = \frac{87,031,512,096,420,449}{221,360,321,731,856,907,600} \approx \boxed{0.000393}\)

The inequality to show the values of [w] that will not exceed the weight limit of the elevator is w + 1643 ≤ 2000. On solving the inequality, we get w ≤ 357. The graph of the inequality is attached.

        ≤ : less than or equal to

        ≥ : greater than or equal to

        < : less than

        > : greater than

        ≠ : not equal to

Given is the maximum load for a certain elevator is 2000 pounds. The total weight of the passengers on the elevator is 1400 pounds. A delivery man who weighs 243 pounds enters the elevator with a crate of weight [w].

        1400 + 243 + w ≤ 2000

        w + 1643 ≤ 2000

        w + 1643 ≤ 2000

        w ≤ 2000 - 1643

        w ≤ 357

Therefore, the inequality to show the values of [w] that will not exceed the weight limit of the elevator is w + 1643 ≤ 2000. On solving the inequality, we get w ≤ 357. The graph of the inequality is attached.

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The distance between point G (-3, 5) and point H (6, -3) is approximately 12.04 units.

To find the distance between two points on a coordinate grid, we can use the distance formula, which is derived from the Pythagorean theorem. The formula is:

Distance = sqrt((x2 - x1)^2 + (y2 - y1)^2)

Using this formula, we can calculate the distance between points G and H as follows:

Distance = sqrt((6 - (-3))^2 + (-3 - 5)^2)

= sqrt((6 + 3)^2 + (-3 - 5)^2)

= sqrt(9^2 + (-8)^2)

= sqrt(81 + 64)

= sqrt(145)

≈ 12.04 units

The distance between point G (-3, 5) and point H (6, -3) is approximately 12.04 units. This measurement represents the shortest straight-line distance between the two points on the coordinate grid.

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x=12

L||M means L will be parallel to M.

Two lines are parallel if their corresponding angles are the same.

Corresponding angles are shown below.

As the two angles given are corresponding, L||M when x+5 = 2x-7.

x+5 = 2x-7

x = 12

Therefore, the value of x which makes L||M is 12.

Answer:

x = 12

Step-by-step explanation:

Now we have to,

→ find the required value of x.

Forming the equation,

→ x + 5 = 2x - 7

Then the value of x will be,

→ x + 5 = 2x - 7

→ x - 2x = -7 - 5

→ -x = -12

→ [ x = 12 ]

Hence, the value of x is 12.

1. (A)  Section titles  (lines starting with %% followed by a space and then a title).

2. (B)  Automatically pause code execution at the start of each section when running a script. (This is not a purpose of code in the MATLAB Editor.)

3. All these functions operate element-wise on each element of the matrix X and return a matrix of the same size.

The source of the section headers in the resulting document when publishing a script from the MATLAB Editor is:

a. Section titles (lines starting with %% followed by a space and then a title).

The statement that is not true about the purpose of code in the MATLAB Editor is:

b. Automatically pause code execution at the start of each section when running a script. (This is not a purpose of code in the MATLAB Editor.)

3. The commands that return a matrix of the same size as x, given a non-scalar matrix X, are:

a. mean(x)

b. sin(x)

c. log(x)

d. sum(x)

e. std(x)

f. sqrt(x)

All these functions operate element-wise on each element of the matrix X and return a matrix of the same size.

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Answer:

the question peratains to peaches. so 15 ÷ 2.99 = 5.01~5

thus, he can buy 5 pounds of peaches

The solution to the differential equation is:

\(g(x) = x^2*sgn(x)\)

We want to solve:

g'(x) = 2*|x|

If we integrate g(x), we will get:

\(\int\limits {2*|x|} \, dx\)

Remember that:

Then:

\(g(x) = \int\limits {2*|x|} \, dx = 2*(\frac{x^2}{2}*sgn(x)) + C\)

Where sgn(x) is the sign of the value x, and C is a constant of integration.

We also know that g(0) = 0, then:

\(g(0) = 2*(\frac{0^2}{2}*sgn(0)) + C = C = 0\)

So we conclude that C = 0.

Then the function is:

\(g(x) = x^2*sgn(x)\)

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Answer:

Here is the graph of y = -5 sin(1/7 x) - 3:

bash

| /\

| / \

| / \

| / \

| / \

| / \

|_____/________________\_____

0 14 28

In this graph, the x-axis represents values from 0 to 28, and the y-axis represents values from -8 to 2. The graph shows a sine wave with a period of 2π(7) = 14π, an amplitude of 5, and a vertical shift downward by 3 units. The graph crosses the x-axis at x = 7π, 21π, and has its minimum value of y = -8 at x = 14π.

Answer:

See attachments.

Step-by-step explanation:

The sine function is periodic, meaning it repeats forever.

Standard form of a sine function:

\(f(x) = A \sin (B(x+C))+D\)

where:

Given function:

\(f(x)=-5 \sin \left(\dfrac{1}{7}x\right)-3\)

Therefore:

The given function has no horizontal shift and its period is:

\(\sf Period=\dfrac{2 \pi}{B}=\dfrac{2 \pi}{\frac{1}{7}}=14\pi\)

As "A" is negative, the curve is reflected in the x-axis.

Therefore, the x-values of the minimum and maximum points are:

\(\implies x_{\sf min}=\dfrac{1}{4} \cdot \text{period}+\text{period} \cdot n=\dfrac{7}{2}\pi+14\pi n\)

\(\implies x_{\sf max}=\dfrac{3}{4} \cdot \text{period}+\text{period} \cdot n=\dfrac{21}{2}\pi+14\pi n\)

The mid-line of the function is y = D, therefore the mid-line of the given function is y = -3.

As the amplitude is 5, the maximum and minimum points of the curve are 5 more and 5 less than the mid-line:

\(\implies y=-3+5=2\)

\(\implies y=-3-5=-8\)

Therefore, the minimum points of the graph are:

\(\left(\dfrac{7}{2}\pi + 14 \pi n, -8\right)\)

Therefore, the maximum points of the graph are:

\(\left(\dfrac{21}{2}\pi + 14 \pi n, 5\right)\)

As the mid-line of the function y = -3, there is no horizontal shift and its period is 14π, the function crosses the mid-line at:

\(\left(7\pi n, -3\right)\)

To graph the given function on the given small coordinate grid (attachment 1):

To graph the given function on a larger coordinate grid, see attachment 2.

The volume of the given solid is πa³/4 cubic units.

Given that the base of a solid is a quadrant of a circle of radius a and each cross-section perpendicular to one edge of the base is a semicircle whose diameter lies in the base.

To find the volume of the solid, we'll integrate the area of the cross-section over the height of the solid.

Let us consider a cross-section with thickness dx at a distance x from the vertex of the quadrant, as shown in the figure below.

Here, the diameter of the semicircle forming the cross-section is 2(x + a).

Therefore, the radius of the semicircle is (x + a).

Area of the cross-section = Area of the semicircle= π[(x + a)²]/2

Volume of the solid = ∫Area dx from 0 to a= ∫π[(x + a)²]/2 dx from 0 to a= π/2 ∫(x² + 2ax + a²) dx from 0 to a= π/2 [(a³/3 + 2a²/2 + a³/2) - (0)] = πa³/4 cubic units

Therefore, the volume of the given solid is πa³/4 cubic units.

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Answer:

Point B would be at 2.5

Step-by-step explanation:

The points have an 8 umber distance so numbers 2 and 3 are the middle numbers and the middle of those numbers would be 2.5.

Answer:

2.5

Step-by-step explanation: i did it on a test and got it right

A rectangular prism has 6 faces, 8 vertices and 12 edges.

What is rectangular prism?

A rectangular prism is a three-dimensional shape, that has six faces (two at the top and bottom and four are lateral faces). All the faces of the prism are rectangular in shape. Hence, there are three pairs of identical faces here. Due to its shape, a rectangular prism is also called a cuboid. A rectangular prism is a three-dimensional solid shape with six faces that including rectangular bases. A cuboid is also a rectangular prism. The cross-section of a cuboid and a rectangular prism is the same.

If all the faces of the prism are squares then the rectangular prism is a cube. The volume of a rectangular prism is a measure of the space inside the prism.

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The ability to order items in a sequence, such as longest to shortest, is known as Seriation.

Seriation is a cognitive skill that involves arranging objects, events, or ideas in a particular order or sequence. It is a crucial aspect of cognitive development and is typically acquired during early childhood. Seriation is the ability to mentally order objects along a quantitative dimension, such as size, weight, or length.

Seriation involves comparing and ordering items based on specific criteria. For example, if given a group of objects of different lengths, a child who has developed seriation skills will be able to arrange the objects in order from shortest to longest. Similarly, if given a group of numbers, a child who has developed seriation skills will be able to arrange them in order from smallest to largest.

Seriation is an important cognitive skill that is used in various areas of life, including academic, professional, and personal domains. It allows individuals to organize information and ideas in a logical and meaningful way, which can facilitate more efficient processing and understanding of complex concepts.

Overall, seriation is a fundamental cognitive skill that plays a crucial role in various aspects of life, including problem-solving, decision-making, and organization. It is an essential skill that supports the development of higher-order thinking skills, such as analysis, evaluation, and synthesis.

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If you doubled a penny every day, you would have $5,368,709.12

You can see that the decision is rather straightforward: having a single penny that doubles every day for a month are preferable to receiving $1 million upfront. This is due to compound interest's strength.

The interest earned on savings that are computed using both the original principal and the interest accrued over time is known as compound interest.

It is thought that Italy in the 17th century is where the concept of "interest on interest" or compound interest first appeared. It will accelerate the growth of a total more quickly than simple interest, which is solely calculated on the principal sum.

Money multiplies more quickly thanks to compounding, and the more compounding periods there are, the higher the compound interest will be.

If I double this particular penny every day, I would have 30 extra pennies, plus my original one. I have $0.31 literal dollars

On day 30, if you doubled a penny every day, you would have $5,368,709.12.

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Answer:

3

Step-by-step explanation:

its simple, just put them all in the places they havent been, there are 3 places and three students

Answer:

6

Step-by-step explanation:

The given number 87392 is rounded off to 87390.

Rounding off means a number is made simpler by maintaining its overall value but being closer to the next number.

The number to be rounded off is 87392.

The digit present in the once place is 2.

If the smallest place digit is greater than or equal to 5, then round up the digit.

As the digit in the smallest digit is less than 5, the digit gets rounded down.

Here, the smallest place digit is 2 which is smaller than 5.

So, the given number rounded off to 87390.

Hence, the answer is 87390.

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Answer:

f(-4) = -28

f(5) = 35

Step-by-step explanation:

"Evaluate f(x) at the given values of x." just means that they are going to give us a number to fill in for x. And then we get a number answer.

So, f(x) = 7x is like a rule. Like calculation directions. It means, whatever x is, times that by 7.

If x = -4, then we fill it in.

f(-4) = 7 • -4 and do the multiplying, and get:

f(-4) = -28

^^^that means when x is -4, f(x) is -28.

(and f(x) is just fancy math for y)

If x = 5, then we fill it in.

f(5) = 7 • 5 and do the multiplying, and get:

f(5) = 35

Here, x is 5 and f(x) is 35, or y is 35 *remember y = f(x)*

Answer:

1/10 th

Step-by-step explanation:

Refer the attached photo.

Answer:

hello 10%

good luck

Answer:

35 + 7X = 63

Step-by-step explanation:

35 + 7X= 63

7X = 63-35

7X = 28

X = 28 / 7

X = 4

He works on one car for four hours.

Answer:

Scott works on cars. He charges $35 for each car plus $7 per hour. The correct equation was  = 63.

Step-by-step explanation:

7x + 35 =63.

Step-by-step explanation: First change the minus inside to plus a negative.

Now we can distribute the -8 through each

of the terms inside the set of parenthses.

So we have -8(2y) + -8(-3) or -16y + 24.

Take a look below.

The range of the given function f(x) = x² + 2 is found as 33/16.

For the given question.

The function is given as;

f(x) = x² + 2

The range of the function for the domain of 1/4.

From the definition of domain put x = 1/4 in the function, the range will be obtained.

f(1/4) = (1/4)² + 2

f(1/4) = 1/16 + 2

f(1/4) = 33/16

Thus, the range of the given function f(x) = x² + 2 is found as 33/16.

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answer is 459 dollars

explanation: 15% of 500 is 75 that =425 + the tax which is 34 dollars so add them to get the answer 459

The  examples that would constitute a discrete random variable are;

I. Total number of points scored in a football game

III. Number of near collisions of aircraft in a year

A discrete random variable has only a countable number of different values that it can assume. Usually, but not always, discrete random variables are counts. A random variable is discrete if it can only take a finite number of different values. A variable whose value is determined by counting is referred to as a discrete variable.

A continuous variable is one whose value may be determined through measurement. A random variable is a variable whose value is the resultant number of an unpredictable event.

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