Please help, i dont understand this

The joint relative frequency of students using mobile devices in traditional classes, is

The joint relative frequency of students that use mobile devices in the setting of a traditional class is :
= Number of students using mobile devices in traditional class / Number of total students accessing courses

Number of students using mobile devices in traditional class =  46 students

Number of total students accessing courses = 200

The  joint relative frequency of students using mobile devices in traditional classes :

= 46 / 200

= 23 %

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The simplified equation for finding the inverse of y = 2x² is x = 2y².

It is worth noting that the inverse of y = 2x² is √x/2 = y.

x = 2y²

Make the subject of the formula 'y²'.

x/2 = y²

Make 'y' the subject of the equation by taking the square root of both sides.

√x/2 = √y²

The square root cancels out the square.

√x/2 = y

Thus, the simplified equation for finding the inverse of y = 2x² is,

x = 2y².

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A one-dimensional array is the simplest type of array in which the elements are stored linearly and can be accessed individually by determining the index value of each element stored in the array.

A one-dimensional array is the simplest type of array in which the elements are stored linearly and can be accessed individually by determining the index value of each element stored in the array.

One Dimensional Arrays are used to implement other data structures such as stacks, queues, heaps, graphs.

A typical advantage of one Dimensional Arrays is that they help in accessing elements easily using the index number.

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Answer:

The graph of given function is shown below.

Step-by-step explanation:

The absolute parent function is g(x)=|x|. The graph of parent function is a V-shape d and vertex of the function is origin.

The given function is

             .... (1)

The vertex from of an absolute function is

         .... (2)

where, a is a constant and (h,k) is vertex of the function.

From (1) and (2) we get

The value of a is -1. The value of a is negative it means the graph of parent function reflect across x-axis.

The vertex of the function is (0,-2). It means the graph of parent function shifts 2 units down.

The percentage of money Indrani receives is 43.75%.

A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.

Given,  Indrani and Jagad share some money in the ratio,

Indrani : Jagad = 7 : 9.

We know the percentage of money for both a and b in the form of a : b can be obtained as, [a/(a + b)]×100.

Therefore, the percentage of money Indrani gets is,

= [7/(7 + 9)]×100.

= (7/16)×100.

= 43.75%.

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Answer:

43.75%

Step-by-step explanation:

The value of x is 20 units.

The correct answer is 20 units .

According to the triangle,

ST = 9, TQ = 16 and RQ = x

From similar triangles,

Δ SRQ ⩭ Δ STR ------(1)

{∵ RT 丄 Hypotenuse SQ}

Δ SRQ ⩭ Δ RTQ ------(2)

{∵ Δ SRQ, Δ STR and Δ RTQ are similar triangles}

⇒ SR/ST = SQ/SR = RQ/TR

⇒ SR/9 = 25/SR = x/TR

⇒ SR2 = 25 × 9

⇒ SR = 5 × 3 = 15

[tex]SR^2[/tex] + [tex]RQ^2[/tex] = [tex]SQ^2[/tex]

[tex]RQ^2 = SQ^2 - SR^2[/tex]

[tex]RQ^2 = 25^2 - 15^2[/tex]

RQ = x = √(625 - 225) = √400

x = 20 units.

Hence, The value of x is 20 units.

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The complete question is this:

What is the value of x?

12 units, 15 units, 20 units, 24 units

You may use three triangle-specific theorems to quickly distinguish similar triangles.

There are three theorems that may be used to determine whether two triangles are similar: Angle - Angle (AA), Side - Angle - Side (SAS), and Side - Side - Side (SSS).

SSS, which stands for "side, side, side," denotes that there are two triangles with identical angles on all three sides. The triangles are congruent if their third sides are the same as those of another triangle.

That is what the SAS regulation says. The triangles are congruent if the two sides and included angle of one triangle are the same as the two sides and included angle of another triangle. Any angle that is created by two specified sides is an included angle.

According to the AA postulate of Euclidean geometry, two triangles are similar if their two corresponding angles are congruent. The fact that the sum of a triangle's internal angles is always equal to 180° leads to the AA postulate.

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Answer:

A. It is an increase in assets.

Step-by-step explanation:

The Debit section shows what the business purchased which is $12,000 worth of equipment. Hence, the business gained equipment worth $12,000 which is an increase in assets.

Answer:

A. It is an increase in assets.

Step-by-step explanation:

The entry "Equipment 12,000" is listed as a debit in the T-account because it is an increase in assets.

A T-account is a visual representation used in accounting to track and display the balances of a specific account, with the "debit" side showing increases and the "credit" side showing decreases.

When office equipment is purchased, it represents an increase in the company's assets. An increase in assets (or a decrease in liabilities) is recorded as a debit on a company's balance sheet.

In this case, the business is acquiring equipment, which is considered an asset, and therefore, it is debited to reflect the increase in the asset account.

"It's pouring if the grass is wet." Our inverse sentence would be, "If it is NOT raining, then it is NOT wet on the grass."

Given,

Inverse Sentence;

Each of the original statements is presupposed to be false in an inverted statement. "If it is not snowing" would be the polar opposite of "If it is snowing." "Then it is not chilly" would be the polar opposite of "then it is cold."

Example of inverse sentence;

Now, we can construct the three other statements using the concepts we established before. If anything, we would say the opposite: "If the grass is wet, it's pouring." "If it is NOT raining, then the grass is NOT wet," would be our inverse claim.

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The square root of some number 'X' is a number which, when you multiply it by itself, the answer is 'X'.

The square root of a number is the factor that we can multiply by itself to get that number. The symbol for square root is [tex]\sqrt{x}[/tex] . Finding the square root of a number is the opposite of squaring a number.

In mathematics, a square root of a number x is a number y such that y² = x; in other words, a number y whose square (the result of multiplying the number by itself, or y ⋅ y) is x.[1] For example, 4 and −4 are square roots of 16, because 4² = (−4)² = 16.

Thus , the square root of some number 'X' is a number which, when you multiply it by itself, the answer is 'X'.

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Answer:

D. Line symmetry

Step-by-step explanation:

I am pretty sure it is Line symmetry because it has a line pass through the vertex and divides the graph into two equal halves. If I am wrong, I am sorry!

Therefore , the 4 year old children can able to count to 1 to 100 counting by making them learn.

Mathematicians can add numbers using the counting-on technique. When using this method, a learner begins by adding the larger number, then "counts on" with the other addends to get the sum. The student will recognize 4 as the higher number and add three more numbers, such as integers "4... 5, 6, 7," if the number sentence is 4 + 3.

Here,

Children develop and learn on an individual basis, however many

4 year old are able to learn their numbers between 1 and 100 and can count over 10.

They could be prepared to practice counting by fives or other skip counting techniques (5, 10, 15, 20, and so on).

Start working on number recognition with your kid as soon as you can.

Therefore , the 4 year old children can able to count to 1 to 100 counting by making them learn.

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The two expressions equal to the area of the figure are (6×10) + (6×6) + (6×10) square centimeters and (6×4) + (18×6) + (6×4) square centimeters. Select these options

Consider the images I attached:

First image:

The area of the figure = area of rectangle A + area of rectangle B + area of rectangle C

The area of the figure = (6×10) + (6×6) + (6×10)

Second image:

The area of the figure = area of rectangle D + area of rectangle E + area of rectangle F

The area of the figure = (6×4) + (18×6) + (6×4)

Thus, (6×10) + (6×6) + (6×10) square centimeters and (6×4) + (18×6) + (6×4) square centimeters are the two expressions equal to the area of this figure

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TRUE: The ratio of 6 and 8 is equivalent to 3/4.

Remember that the ratio is the same when you multiply both sides of a fraction by a number.

= 3/4

= 3*2 / 4*2

= 6/8

= 6:8

Thus, the ratio of 6 and 8 is equivalent to 3/4.

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Is 6:8 equals 3/4 ? Is it true or false and why?

The equation describes a line that contains the point (4, -3) is y = ( -1/25 )x - 71/25 .

Given :

The point (4, -3) and is perpendicular to the line represented by the equation y = 25x +3 .

Here slope m = 25

Perpendicular slope = -1 / m

= -1 / 25

The line equation is y = mx + c

Substitute m and ( 4 , -3 ) we get

-3 = -1/25 * 4 + c

-75 = -4 + 25c

-71 = 25c

c = -71/25

y = mx + c

y = ( -1/25 )x - 71/25

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The equations of the asymptotes are y = 2 and x = -1, respectively

The equation of the function is given as

f(x) = 2x² + 7x - 4/x² + 5x + 4

Introduce bracket, to differentiate the numerator and the denominator

So, we have

f(x) = (2x² + 7x - 4)/(x² + 5x + 4)

Next, we plot the graph of the function (see attachment)

The asymptotes are the points on the graph is a line that acts as the limit of another line or curve

From the graph, we have the asymptotes to be

x = -1 and y = 2

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Complete question

What is the equation of the asymptote?

f(x) = 2x² + 7x - 4/x² + 5x + 4

Congruence theorem can be used to prove WXS = YZS is  ASA.

What is Congruence theorem ?

If two triangles are identical in size and shape, they are said to be congruent. Corresponding sides (sides in the same location) and corresponding angles (angles in the same position) are congruent when triangles are congruent (equal).

Point S makes the two connected angles the same. They both have right angles.

And one side of each is congruent.

This means you know 2 angles are the same and one side is the same.

You would use ASA (Angle, Side, Angle).

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Answer:

A. M1+ M2 + M3

Step-by-step explanation:

M1 is the money supply that makes it easy to convert assets/items into currency.

M2 is the deposits and money market funds.

Add M1, M2, and M3 to calculate the entire money supply of all the money in the economy.

Answer:

A. M1+ M2 + M3

M3 consists of all currency notes held by the public, all demand deposits with the bank, deposits of all the banks with the RBI and the net Time Deposits of all the banks in the country. So M3 = M1 + time deposits of banks.

Step-by-step explanation:

Answer:

A = 5 + 3t

B = 7 + 2t

2 hours

Step-by-step explanation:

7 + 2t > 5 +3t

                      (subtract 2t from both sides)

7         > 5 + t

                      (subtract 5 from both sides)

2         > t

therefore in 2 hours, the parking would be cheaper in Garage A than B

The true statement about the interval is that:

The given interval is -7 ≤ x < -4, the numbers in the interval are

-7, -6, -5,

The numbers are all negative and the number starts from -7 but did not get to -4

since the interval starts from -7 which is a lesser number than -6 and a lesser when compared with -5 we say the interval is increasing

In negative numbers, the larger the number the lesser it has value and and lesser the number the closer it is to zero and the higher the number

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The mean deviation of the data 8,9,12,15,16,20,24,30,32,34​ is 8

Given data: 8,9,12,15,16,20,24,30,32,34

The formula for the mean (x bar) =  sum of observations /no. of observations

Mean (x bar) = 8+9+12+15+16+20+24+30+32+34/ 10

Mean = 200/10

∴ Mean = 20

Now, we find the mean deviation using mean

Mean deviation using mean = 1/n Σ|x- x bar|

where n= number of observations = 10

x= each observation in the data

x bar= mean of the data= 20

Mean deviation using mean

= 1/10 x [(20-8)+(20-9)+(20-12)+(20-15)+(20-16)+(20-20)+(24-20)+(30-20)+           (32-20)+(34-20)]

= 1/10 x [12+11+8+5+4+0+4+10+12+14]

= 1/10 x (80)

= 80/10

Mean deviation = 8

Thus the mean deviation is 8.

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Lines that have the same slope are said to be parallel, and if the slope of one line is equal to the negative reciprocal of the slope of the other, the two lines are said to be perpendicular; otherwise, they are merely intersecting lines.

A line's slope is defined as the ratio of the change in the y coordinate to the change in the x coordinate.

Both the net change in the y-coordinate and the net change in the x-coordinate are denoted by Δy and Δx, respectively. and

m = Δy/Δx = dy/dx = change in y/change in x

where "m" represents a line's slope.

Additionally, the slope of the line may be shown as

tan θ = Δy/Δx

A line's slope often indicates the steepness and direction of the line.

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Both the net change in the y-coordinate and the net change in the x-coordinate are denoted by Δy and Δx, respectively. and

m = Δy/Δx = dy/dx = change in y/change in x

where "m" represents a line's slope.

Additionally, the slope of the line may be shown as

tan θ = Δy/Δx

The price of the two pencils is Rs.100 (expensive) and Rs.60 (cheaper).

Let the price of the expensive pencil be = x

And the price of the cheaper one be = y.

According to the question:

The difference between the price of 2 = 40

Therefore,

x- y =40

Total amount = 1800.

The number of Expensive pencils that can be bought = 1800/x.

The number of Expensive pencils that can be bought = 1800/y.

According to the question,

1800/y -1800/x = 15 (the number of extra pencils)

= (1800x -1800y)/xy = 15

= 1800x -1800y =15xy

= 1800 (x-y) =15xy

Substituting x-y as 40

1800 x 40 =15xy

xy = 4800.

We know that x-y =40

Therefore, x = y+ 40

xy = 4800

(y+40) y = 4800

[tex]y^{2}[/tex] + 40 y = 4800

Using the quadratic equation formula,

y = 52.111 or y = -92.111

Thus, the cost of the cheaper pencil (y)= Rs. 52.111

The cost of the expensive pencil (x) = 52.111 + 40 = Rs 92.111

Therefore the cost of two pencils is =   Rs. 52.111 and Rs 92.111.

The sum of the geometric sequence is 88,573.

The formula for the sum of a geometric sequence is

S = a₁(1 - rⁿ)/(1-r),

where a₁ is the first term of the sequence, r is the common ratio between terms, and n is the number of terms in the sequence. In this case, the first term is a₁ = 1, the common ratio between terms is r = 3, and the number of terms is n = 10. Inserting these values into the formula,

we get S = 1(1 - 3⁹)/(1-3) = 1(1 - 19,683)/(-2) = -9,841.5.

Therefore, the sum of the geometric sequence is 88,573.

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The time t at which the population is 500 is 45 hours.

The equation gives the rate of change of the population at time t:

dP/dt = kP

where P is the population at time t and k is the constant of proportionality.

We can use this equation to find the value of k by substituting the known values of P and t at time t=24 hours:

dP/dt = kP

1000 = k*300

k = 1000/300

k = 10/3

Now that we know the value of k, we can use the equation to find the time t at which the population is 500:

dP/dt = kP

500 = (10/3)P

P = 500*3/10

P = 150

Since the population at time t=0 hours is 300, the population has decreased by 150 over the 24 hours, so t = -150/(-10/3) = 45 hours.

Therefore, the time t at which the population is 500 is 45 hours.

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dP/dt = kP

We can use this equation to find the value of k by substituting the known values of P and t at time t=24 hours:

dP/dt = kP

1000 = k*300

k = 1000/300

k = 10/3

dP/dt = kP

500 = (10/3)P

P = 500*3/10

P = 150

Since the population at time t=0 hours is 300, the population has decreased by 150 over the 24 hours, so t = -150/(-10/3) = 45 hours.

Therefore, the time t at which the population is 500 is 45 hours.

Answer:

3

Step-by-step explanation:

She's got 315 total pictures. if she uses one page for 6 pictures then she will fix 52 and a half pages. if only half the page is filled you have 3 photos left

The number of pictures leftover in the scrapbooks is A = 3

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

The total number of pictures = 315

The number of pictures in each page = 6

Since Anne can only fill complete pages, she will use 52 pages. The remaining pictures will be:

The remaining pictures = total pictures - (pictures per page x pages used)

On simplifying the equation , we get

The remaining pictures A = 315 - (6 * 52)

The remaining pictures A = 315 - 312

The remaining pictures A = 3

Hence , Anne will have 3 pictures left over.

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Answer:

False

Step-by-step explanation:

Vertical angles are always congruent regardless of if the lines are parallel.

The graph of f(x) = [tex]x^{5}-8x^{4}-16x^{3}[/tex] has the following end behavior : as x decreases, x5 increases; as x increases, x5 decreases; and the graph crosses the x-axis at x = 0 instead of at x = 4.

Given, f(x) =  [tex]x^{5}-8x^{4}-16x^{3}[/tex]

                   f(x) =  [tex]x^{5}-8x^{4}-16x^{3}[/tex]

                         = [tex]x^{3}[/tex](x - 4)(x - 4) = 0

                    [tex]x^{3}[/tex] = 0

                     x = 0

                   x - 4 = 0

                        x = 4

         Thus, x = 0 and x = 4 are the roots.

As a result, the graph will touch the x-axis but not the repeated root of x = 4, indicating that the graph has a repeated root.

Correct question :

What is the end behavior of the graph of f(x)= [tex]x^{5}-8x^{4}-16x^{3}[/tex]   ?

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“5 more than a number” written as an algebraic expression is “x+5”.

In a formula or equation involving mathematical operations, the representation of numbers by alphabet is referred to as algebra. Similar to how a statement explains the link between certain words, algebraic equations describe the connection between unknown variables. 

We are given a mathematical statement and have to convert it into an algebraic expression using the information above.

Let there be a number “x”.

A number 5 more than this number is obtained after adding 5 to the given number.

So a number 5 more than x is equal to x+5.

Hence “5 more than a number” written as an algebraic expression is “x+5”.

Complete question: How do you write 5 more than a number?

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