giving a test to a group of students, the grades by the two different classes are summarized below. a a b b c c total morning class 4 4 20 20 8 8 32 32 afternoon class 13 13 5 5 7 7 25 25 total 17 17 25 25 15 15 57 57 enter your answer as a fraction or as a calculation involving fractions. if one student is chosen at random, find the probability that the student got a a a given that the student was in the afternoon class.

After divide, the value of quotient is 0.133.

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

We have to given that;

⇒ 10 divided by 75.10.

Now, We get;

⇒ 10 divided by 75.10

⇒ 10 ÷ 75.10

⇒ 0.133

Thus, The value of quotient after divide = 0.133

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Hey there!

Answers;

For part (a):

[tex]v=669,883[/tex]  [tex]miles/day[/tex]

[tex]r=44,423[/tex] [tex]miles[/tex]

[tex](a)V=rw[/tex]

[tex]w=\frac{v}{r}[/tex] [tex]=\frac{669883}{44423}[/tex][tex]=15.0796[/tex] [tex]radians/day[/tex]

[tex]15[/tex] [tex]radians/day[/tex]

For part (b):

[tex]Circumference=2\pi r[/tex]

[tex]2*3.14*44423[/tex]

[tex]278976*44[/tex]

Number of rotations = [tex]\frac{669883}{278976*44}[/tex] =  [tex]2*40[/tex] ⊥ ≈ [tex]2[/tex]

Hence:

(a) [tex]15[/tex] [tex]radiations/day[/tex]

(b) Number of rotations = [tex]2[/tex]

___________________________________________

Hope this helps! If you mark Brainliest, TYSM! :D

The measure of the side length n is equal to 14 for the right triangle.

Considering the larger acute angle, if we represent it by θ then for the bigger right triangle with adjacent m and hypotenuse 28+7= 35;

cosθ = m/35

for the smaller right triangle with adjacent 7 and hypotenuse m

cosθ = 7/m

m/35 = 7/m

m² = 245 {cross multiplication}

m = √245 = 7√5 {take square root of both sides}

(√245)² = 7² + n² {by Pythagoras rule for the smaller right triangle}

245 = 49 + n²

n² = 245 - 49 {collect like terms}

n² = 196

n = √196 {take square root of both sides}

n = 14

Therefore, the measure of the side length n is equal to 14 for the right triangle

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Answer: THE CORRECT ANSWER IS 30  

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

this is a college level question ? oh my ...

to get the total area we need to add the area of the rectangle and the area of the half-circle.

the area of the rectangle is

length × width = 15 × 5 = 75 ft²

the area of the half-circle is

pi×r² / 2

how do we get r (radius) ?

we know, both lengths of the rectangle must be equally long. so, 15 ft.

we see that the remaining length after the half-circle is 9 ft.

so, the diameter of the half-circle is 15 - 9 = 6 ft.

the radius is half the diameter, so r = 6/2 = 3 ft.

the area is therefore

pi×3² / 2 = 9pi /2 = 14.13716694... ft²

in total that makes

75 + 14.13716694... = 89.13716694... ft²

the closest of your answer options is A : 88 ft²

The standard deviation of the data is  2.41 smartphones.

Data refers to the elements that make up persons, things, events, and ideas. It could be an integer, a title, or anycast. Data must be tabulated after collection in order to study their prominent characteristics. The presentation of data is the name given to such a configuration.

Bar Chart, Histogram, Line Graph, Pie Chart, Frequency Distribution Table.

Given, The number of smartphones sold at an electronic store each day

is represented by the table with two columns and 5 rows.

The mean of the data set is,

= (8 + 13 + 12 + 10 + 15)/5.

= 11.6.

We know the formula for the standard deviation of a data set is,

= [tex]\frac{1}{\sqrt{n}}\sqrt{\sum_{i =1}^{n} (x_i - \overline{x}{}})^2[/tex].

= (1/√5)×√[(-3.6)² + (-1.4)² + (-0.4)² + (-1.6)² +(-3.4)²].

= (1/√5)×[√29.2].

= 2.41.

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Answer:

2.7 Smartphones

Step-by-step explanation: Just did it

15 divided by eight and seven fifty eight thousandths will give a quotient of one and seven hundred and three thousandths

One of the four fundamental operations, along with addition, subtraction, and multiplication, is division. A number is split using the straightforward method of division.

The division (/) operator creates the product of its operands, where the dividend is the left operand and the divisor is the right operand.

In the problem written the words the division is done by writing in figure as below

15 ÷ 8.758

Using calculator the quotient is 1.7127 = 1.713 to the nearest thousandth

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Answer:

40

Step-by-step explanation:

c= 5*(104-32)/9 =40

A two variable linear equation means an equation having two variables. It is usually represented as ax+by =c. We can solve a two variable linear equation in many ways.

If the linear equation is only given, to solve it we have to calculate the x-intercept and y-intercept. It is one way of solving a two variable linear equation. Lets look into an example.

 2x+5y = 19

The x intercept is when y=0,

then, 2x+ (5×0) = 20

          2x = 20, x=10

y intercept is when x=0, then

2×0 + 5y = 20

   5y = 20,  y= 20/5 =4

So, by solving the equation, we get x=10 at x intercept and y=4 at y intercept.

If one the values are given , we can substitute it in the equation to calculate the other variable.

In the equation, 2x+3y= 12, if y=2, we can calculate by substituting.

    2x + (3×2) = 12

     2x = 12-6

     2x = 6

      x =3

So when y=2 then x=3.

Constraints are the restrictions on the domain of a linear equation, like a number of days or students should be a positive integer.

So, we can solve a two variable linear equation through different ways.

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Answer:

Step-by-step explanation:

Quarter implies 4. If there were 20 items, and you broke them into quarters, each quarter would have 5 items.

The position of the value is shown on the number line attached to this answer.

A number line is a ray which extends from -∞ to +∞ as its two extreme ends. Thus all number fall within this range such that all directed numbers can be located on the number line.

A directed number is a any number which has either a positive or negative sign. This implies that the position of all numbers can be shown on the line.

Thus, from the question to show 2/3 of 4 on the number line;

2/3 of 4 = 2/3 x 4

             = 8/ 3

             = 2 2/3

The position of 2 2/3 is shown on the number line attached to this answer.

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The percentage change from 20 to 14 is 30% decrease

From the question, we have the following parameters that can be used in our computation:

20 to 14

The final value (14) is less than the initial value (20)

So, the change is a percentage decrease

The change is then calculated as

Change = (Final value - Initial value)/Initial value * 100%

Substitute the known values in the above equation, so, we have the following representation

Change = (14 - 20)/20 * 100%

Evaluate

Change = -30%

Hence, the percentage decrease is 30%

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Answer: 35/4 or 8.75 or 8 3/4

Step-by-step explanation:

First, you start by multiplying the minus sign by the parenthesis.

you multiply a negative sign by a negative sign so it cancels out into a positive one.

Then it will be -3 1/2 + 12 1/4. Change the denominator to do both 4, so we can solve the equation.

-3 2/4 + 12 1/4. That will equal 8 3/4 or 35/4.

The answer is 8 3/4 or 35/4.

The magnitude of the electric flux through the sheet will be 6.1 N.m²/C.

What is Electric flux?

The amount of electric lines of force (or electric field lines), which cross a specific area, is referred to as electric flux, a feature of an electric field. According to this theory, electric field lines begin with positive electric charges and end with negative charges.

The following formula can be used to get the electric flux:

∅ = EAcosФ

where,

∅ = Electric flux

E is the Electric field which is 73.9 N/C.

A is Area of the plate which is =  (0.4 m)(0.6 m) = 0.24 m²

θ is the angle between normal to the area and electric field lines = 90° - 20° = 70°.

Putting these values in our formula, we get:

∅ = (73.9)(0.24)cos(70°)

∅ = 6.1 N.[tex]m^{2}[/tex]/c.

Therefore the Magnitude of the electric flux through the sheet is 6.1 N.m²/C.

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The critical values for a one-sample t test given the following conditions are  +1.796, -1.796 2. -2.60 3. +2.576, -2.576 4. +1.729.

Value is a term used in many different contexts to refer to the worth or importance of something. It is used to describe the worth of an item or service in terms of its utility, its ability to satisfy a need or desire, or its usefulness in exchange. Value can also refer to the worth of an individual or group in terms of their contribution to society or their inherent worth. Value is subjective and can vary greatly from one person or group to another.

1. +1.796, -1.796
2. -2.60
3. +2.576, -2.576
4. +1.729

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One integral element that defines sport and distinguishes it from play and dramatic spectacle is the concept of competition.

In sports, there are typically opponents or teams competing against each other to achieve a goal or win a match.

This competitive aspect is not present in play or dramatic spectacles, where the focus is typically on individual or group performance rather than competition against others.

Sports are defined as physical activities that involve a set of rules and are typically competitive in nature. They are typically organized and played by people in order to achieve a goal or win a match. Examples of sports include football, basketball, soccer, tennis, baseball, and golf.

Sports are also a form of recreation, entertainment, and physical activity. They can be played individually or in teams. They help to improve physical fitness, and mental health and also promote teamwork and social interaction.

Therefore, One integral element that defines sport and distinguishes it from play and dramatic spectacle is the concept of competition.

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An equivalent boolean algebra expression for a circuit with 2 inputs a and b is q = (a XOR b)

One way to represent this circuit using Boolean algebra is to use the logical operators AND, OR, and NOT.

The output of the circuit, q, is true when less than two inputs, a, and b, are true. This can be represented as:

q = (NOT(a) AND NOT(b)) OR (NOT(a) AND b) OR (a AND NOT(b))

This can also be represented using the XOR operator (Exclusive OR) which output is true if one and only one input is true:

q = (a XOR b)

Another equivalent representation can be achieved by using the NOR operator which gives true only when none of the inputs is true:

q = NOT( a NOR b)

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The population after 12 years is 98448 and the formula is[tex]P(t) = 25000(1.121)^{t}[/tex].

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that the population of the town is 25000 and increasing at the rate of 1.121.

The expression will be written as:-

[tex]P(t) = 25000(1.121)^{t}[/tex]

[tex]P(12) = 25000(1.121)^{12}[/tex]

P(12) = 98448

Hence, the population after 12 years will be 98448.

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the equation of the required line is 3xâ2y+1=3x1â2y1+1.

(i) We are given the parallel line of the given equation, that is yâ2x=0.

So, the equation of the required line will be yâ2x=c, where c is a constant.

Let the point of intersection of the two lines be (x1, y1).

Then, substituting the values of x1 and y1 in the equation yâ2x=c, we get

y1â2x1=c

or, c=y1â2x1

Hence, the equation of the required line is yâ2x=y1â2x1.

(ii) We are given the perpendicular line of the given equation, that is 2x+yâ5=0.

So, the equation of the required line will be 3xâ2y+1=c, where c is a constant.

Let the point of intersection of the two lines be (x1, y1).

Then, substituting the values of x1 and y1 in the equation 3xâ2y+1=c, we get

3x1â2y1+1=c

or, c=3x1â2y1+1

Hence, the equation of the required line is 3xâ2y+1=3x1â2y1+1.

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The mean birthweight of the obstetrician's own patients is higher than the national mean.

In the first description, 84% is a parameter, since it describes the population as a whole. The survey of 100 residents in Pleasant Valley yields a statistic of 75%, since it is a sample of the population.

In the second description, the mean birthweight of infants in the United States in 2006 of 3.3 kg and the standard deviation of 0.57 kg are both parameters. The mean birthweight of the obstetrician's own patients of 3.6 kg is a statistic. To calculate the difference between the two means, we can subtract the two values: 3.6 kg - 3.3 kg = 0.3 kg. This 0.3 kg difference indicates that the mean birthweight of the obstetrician's own patients is higher than the national mean.

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The comparison test, [tex]$\sum_{n=1}^{\infty} a_{n}$[/tex] diverges since [tex]$\sum_{n=M}^{\infty} b_{n}$[/tex] diverges.

Suppose that [tex]$\sum_{n=1}^{\infty} a_{n}$ and $\sum_{n=1}^{\infty} b_{n}$[/tex] are series with positive terms. We assume that does not exist and that [tex]$\sum_{n=1}^{\infty} b_{n}$[/tex]diverges.

To prove that [tex]$\sum_{n=1}^{\infty} a_{n}$[/tex] also diverges, we will use the comparison test. Since [tex]$\sum_{n=1}^{\infty} b_{n}$[/tex] diverges, we can find a number M such that [tex]$\sum_{n=M}^{\infty} b_{n}$[/tex] diverges. Since [tex]$\lim_{n\rightarrow \infty} \frac{a_{n}}{b_{n}}$[/tex] does not exist, we can find a number N such that for all [tex]$n \geq N$, $\frac{a_{n}}{b_{n}} > 1$[/tex].

Now, for any [tex]$n \geq \max \{M,N\}$[/tex], we have [tex]$\frac{a_{n}}{b_{n}} > 1$[/tex]. Thus, [tex]$a_{n} > b_{n}$[/tex]. By the comparison test, [tex]$\sum_{n=1}^{\infty} a_{n}$[/tex] diverges since [tex]$\sum_{n=M}^{\infty} b_{n}$[/tex] diverges.If the ratio of two series with positive terms,[tex]$\sum_{n=1}^{\infty}a_n$[/tex]  and [tex]$\sum_{n=1}^{\infty}b_n$[/tex], does not converge to a limit as n approaches infinity and [tex]$\sum_{n=1}^{\infty}b_n$[/tex] diverges, then [tex]$\sum_{n=1}^{\infty}a_n$[/tex] must also diverge.

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The period that it would take the Dog to finish the remaining food would be a period of 12.5 weeks

The amount that the dog eats weekly is given as 1 / 20 of the food.

The amount that Lian has left in the bag is given as 5 / 8

To get the number of weeks that it would take to finish the food, we would divide 1 / 20  by 5 / 8

1 / 20 ÷ 5 / 8

20 / 1 * 5 / 8

= 100 / 8

= 12.5

Hence it would take 12.5 weeks for the dog to finish the remaining food here.

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'Lian's dog eats 1/20 of a bag of dog food each week. Lian currently has 5/8 of a bag remaining.How many weeks will it take Lian's dog to finish this remaining food?weeksStuck?

Step-by-step explanation:

x² - y² = (x + y)(x - y)

3x - 3y = 3(x - y)

(x + y)(x - y) / (3(x - y)) = (x + y)/3

Answer:

x^2 - y^2

_______

3x - 3y

(x+y) (x-y)

_______ { (x-y) (x-y) cancels out}

3(x-y)

(x+y)

____

3

Hope this will help you...!!!!

Answer:

18.

3.25

19.

3.125

20.

-26.36

Step-by-step explanation:

Girolamo Cardan or Cardano was an Italian doctor and mathematician who is famed for his work Ars Magna which was the first Latin treatise devoted solely to algebra.

For which the relation =p/3 holds (such a value of p exists always), the Cardano formula for the roots of (1) has the form: x=3q2+q24+p327+3q2q24+p327.  

P and Q are arbitrary complex numbers in the Cardano formula. By substituting y = x + b/3a, the square term is eliminated. Rewrite the aforementioned equation to u3 + v3 + (u+v)(3uv + p) + q = 0 if x = u+v. The equation above is changed to u3 + v3 = -q by setting 3uv + p = 0. We achieve the system in this manner.

With regards to scalability, interoperability, and sustainability issues on cryptocurrency platforms, Cardano is specifically designed to address these. The first issue is the sluggishness of networks and excessive costs brought on by an increase in transaction volume. 

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The charge of each company will be the same at 40 miles.

A mathematical definition of an equation is a claim that two expressions are equal when they are joined by the equals sign ("=").

Let us suppose the miles travelled as x.

Given that:

Cassandra's Car Rentals charges $.10 per mile with a service fee of $40.00, this is represented as:

C = 0.10(x) + 40

Carnuba's Car rental charges $.15 per mile and has a service of $20.

D = 0.15(x) + 20

The charge of both the companies would be equal when C = D:

0.10(x) + 40 = 0.15(x) + 20

40 -20 = 0.15x = 0.10x

20 = 0.5x

x = 20/ 0.5

x = 40

Hence, the charge of each company will be the same at 40 miles.

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So, the height of the pedestal is ((h1−h2)tanβ+h2tanα)/tanα−tanβ.

To find the height of the pedestal, we can use the concept of angles of elevation. The angle of elevation is the angle between the horizontal line of sight and the line of sight to an object above the horizontal.

From the given information, we know that the angles of elevation of the top and bottom of the statue from a point h2 metres above the ground level are α and β respectively.

We can use the tangent of the angle of elevation to find the height of the object. The tangent of the angle of elevation is equal to the height of the object divided by the distance from the base of the object to the point of observation.

Let's call the height of the pedestal as "h3"

So we can write the following equations:

h1/((h3+h1)-h2)= tan(α)

h1/((h3)-h2)= tan(β)

By solving the above equations we can get the value of h3 which is the height of the pedestal.

((h1−h2)tanβ+h2tanα)/tanα−tanβ

This is the final equation which gives the height of the pedestal.

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The average velocity (in m/s) over the given time intervals is [1,2]

Part A.

Keep in mind that the formula for average velocity is

(Y2 - Y1)/V avg = displacement/time interval (t2 - t1)

Given that the rock's position at time t is determined by:

y = 16t - 1.86*t^2

Part 1

for the time period [1, 2]

Y1 = 16*1 - 1.86*12 = 14.14 m when t1 = 1 sec.

Y2 = 16*2 - 1.86*22 = 24.56 m when t2 = 2 sec.

So

average Velocity = (24.56 - 14.14)/(2 - 1) (2 - 1) = 10.42 m/s V avg

Part 2.

for the time period [1, 2]

Y1 = 16*1 - 1.86*12 = 14.14 m when t1 = 1 sec.

Y2 = 16*1.5 - 1.86*1.52 = 19.815 m when t2 = 1.5 sec.

So,

average Velocity  = (19.815 - 14.14)/(1.5 - 1) (1.5 - 1) = 11.35 m/s V avg

Part 3.

During the period [1, 1] .1]

Y1 = 16*1 - 1.86*12 = 14.14 m when t1 = 1 sec.

Y2 = 16*1.1 - 1.86*1.12 = 15.3494 m when t2 = 1.1 sec.

So,

average Velocity  = (15.3494 - 14.14)/(1.1 - 1) (1.1 - 1)

average Velocity = 12.094 m/s and equals 12.09 m/s (In two decimal places)

Part 4.

During the period [1, 1] .01]

Y1 = 16*1 - 1.86*12 = 14.14 m when t1 = 1 sec.

Y2 = 16*1.01 - 1.86*1.012 = 14.262614 m when t2 = 1.01 sec.

So,

average Velocity = (14.262614 - 14.14)/(1.01 - 1) (1.01 - 1)

12.26 m/s and V avg = 12.2614 m/s (In two decimal places)

Part 5.

During the period [1, 1] .001]

Y1 = 16*1 - 1.86*12 = 14.14 m when t1 = 1 sec.

Y2 = 16*1.001 - 1.86*1.0012 = 14.15227814 m when t2 = 1.001 sec.

So,

average Velocity = (14.15227814 - 14.14)/(1.001 - 1) (1.001 - 1)

12.28 m/s V avg = 12.27814 m/s (In two decimal places)

Part B.

Rock's immediate velocity will be determined by:

d[16t - 1.86t2]/dt = V= dy/dt

Velocity = 16*1 - 2*1.86*t

time = 1 second,

Velocity = 16 - 2*1.86*1

average velocity at time t is equal to V = 12.28 m/s.

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The market share of the vape machine market had sales of $1.4M is given as 63.57%.

To calculate the brand's market share, you would need to divide the brand's sales by the total sales of the market and then multiply by 100 to get the percentage.

In this case, the brand's sales are 10000 units x $89/unit = $890,000.

So the market share would be:

$890,000 / $1,400,000 x 100 = 63.57%.

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The numbers that correctly complete the two-way table are 100,70, 170, 80, 130, 210, 180,200, and 380 as shown in the attached chart.

Total of sweatshirts= 380

Total with no hood= 210

Green sweatshirts= 180

Purple sweatshirts with no hood= 70

Based on this information we can conclude:

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