A karate instructor earns $165 for teaching 3 classes. The instructor receives a 10% raise. How much the instructor earns, in dollars, per class after the raise?
A. $60.5
B. $50.5
C. $49.5
D. $181.5

Answer:

Annalise is correct because the outputs are closest when x = 1.35

Step-by-step explanation:

The solution to the equation 1/(x-1) = x² + 1 means the one x value that will make both sides equal. If we look at the table, notice how when x = 1.35, f(x) values are closest to each other for both equations, signifying that x = 1.35 is approximately the solution. Thus, Annalise is correct.

Answer:

£74

Step-by-step explanation:

£55.50 = 75%

Find 1% of discounted price by dividing both sides by 75 :

£0.74 = 1%

Using 1%, multiply by 100% to find original price :

£74 = 100%

Check our answer :

£74 × 0.75 (75%) = £55.50 ✅

Hope this helped and brainliest please

Answer:

the original price is 416.25. because you take the 55.50 and times ... percent of discount is 75%, sale price is 55.50

Step-by-step explanation:

x=36

hope this helped ;)

Complete question :

Kaitlin has been given a list of 5 bands and asked to place a vote. Her vote must have the names of her favorite and second favorite bands from the list. How many different votes are possible?

Answer:

20 different votes

Step-by-step explanation:

Total number of bands = 5

To select her favorite ; she chooses 1 from the five ;

Number of bands left = 4

From. The 4 she chooses one ; which is her second favorite

Number of different votes possible :

Favorite selection * second favorite selection

(5 * 4) = 20 different votes.

Answer:

k=4

Step-by-step explanation:

First, we can subtract 3k on both sides. It is ultimately easier to start by subtracting the term with a variable. This would result in 45=5k+25. Then, we can subtract 25 on both sides to get closer to isolating k. This becomes 20=5k. We can then divide by 5 on both sides. This means that k=4.

Answer:

4 = k

Step-by-step explanation:

3k+45=8k+25

Subtract 3k from each side

3k-3k+45=8k-3k+25

45 = 5k+25

Subtract 25 from each side

45-25 = 5k+25-25

20 = 5k

Divide by 5

20/5 = 5k/5

4 = k

The Linear equations can have 2 or more answers if the lines overlap each other .

In the question ,

it is asked that can two linear equations have 2 answers or solutions .

We know that ,

(1) two linear equations can have No Solution / Zero Solution if two lines are parallel .

(2) two linear equations can have One Solution/Unique Solution if two line intersect at a point .

(3) two linear equations can have infinitely many solution if lines overlap on each other .

So from (3) , we can conclude that linear equations can have 2 or more solutions when the line are overlapping .

Therefore , Yes, the linear equations can have two answers .

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First, set the coordinate points on a graph, and joint them to form a graph

By looking at the graph we can see that:

width : 3

length: 6

Area of a rectangle : Length x width : 6 x 3 = 18

(a) To construct an appropriate spreadsheet model for calculating profits at a given single-user access price, we need to consider the fixed costs, variable costs, and the demand function. Let's assume the single-user access price is represented by the variable "p."

The total cost for producing a certain number of books can be calculated as:

Total Cost = Fixed Cost + (Variable Cost per book) * (Number of books)

The number of books demanded can be estimated using the demand function:

Demand = 4,000 - sp

The revenue from selling the books can be calculated as:

Revenue = (Price per book) * (Number of books demanded)

Finally, the profit can be calculated as:

Profit = Revenue - Total Cost

Given the information provided, the fixed cost is $172,000, and the variable cost per book is $4.

Let's calculate the profit for a single-user access price of $4:

Total Cost = $172,000 + ($4 * Number of books)

Revenue = ($4 * Demand)

Profit = Revenue - Total Cost

Substituting the demand function:

Profit = ($4 * (4,000 - 4p)) - ($172,000 + ($4 * Number of books))

(b) To calculate the price that results in breakeven, we can use the Goal Seek feature in the spreadsheet software. We set the profit formula to be equal to zero and use Goal Seek to find the corresponding price that makes the profit zero. By doing this, we find the price at which the revenue covers all costs, resulting in breakeven.

(c) To find the price that maximizes profit, we can use a data table in the spreadsheet software. We create a data table that varies the price from $50 to $400 in increments of $25 and calculate the profit for each price. By analyzing the data table, we can identify the price that yields the highest profit.

The specific calculations for parts (b) and (c) require the actual spreadsheet data and formulas to be implemented in the software. The steps mentioned above provide a general approach to address those questions.

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The probability that it takes Emma more than 5 minutes to wait for the train is 0.8571.

Given :

the amount of time emma must wait for the train is continuous and uniformly distributed between 4 minutes and 11 minutes.

Let the random variable X denotes the amount of time it takes Emma to wait for the train is continuous and uniformly distributed between 4 minutes and 11 minutes.

the distribution function of X is:

F ( x ) = x - 4 / 11 - 4

4 < x < 11

P ( X > 5 ) = 1 - P ( X < 5 )

= 1 - F ( 5 )

= 1 - 1 / 7

= 7 - 1 / 7

= 6/7

= 0.8571

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Answer:

Step-by-step explanation:

the answer is 5]

Answer:

Step-by-step explanation:

so to get the answer, we just add the number of bones in your hands and bones in your skull1/4 (bones in hands) + 1/10 (bones in skull)we can only add fractions that have the same denominator (bottom number in a fraction) so we change the numbers to have a common denominator:5/20 + 2/20 = 7/20so 7/20 of your bones are in your hands or skull

Answer:

1275510204.08

Step-by-step explanation:

please first take square and then division

The three methods for the evaluation of the accuracy of a classifier are Hold-out method, Cross-validation, and Bootstrap. The major differences among the three methods are explained below:a) Hold-out method:This method divides the original dataset into two parts, a training set and a test set.

The training set is used to train the model, and the test set is used to evaluate the model's accuracy. The advantage of the hold-out method is that it is simple and easy to implement. The disadvantage is that it may have a high variance, meaning that the accuracy may vary depending on the particular training/test split.b) Cross-validation:This method involves dividing the original dataset into k equally sized parts, or folds. This process is repeated k times, with each fold used exactly once as the test set.

The advantage of cross-validation is that it provides a more accurate estimate of the model's accuracy than the hold-out method, as it uses all of the data for training and testing. The disadvantage is that it may be computationally expensive for large datasets, as it requires training and testing the model k times.c) Bootstrap:This method involves randomly sampling the original dataset with replacement to generate multiple datasets of the same size as the original. A model is trained on each of these datasets and tested on the remaining data.

In conclusion, the hold-out method is the simplest and easiest to implement, but may have a high variance. Cross-validation and bootstrap are more accurate methods, but may be computationally expensive for large datasets.

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Answer: 110 degrees

Step-by-step explanation:

30+40=70

180-70=110

By ASA rule ∆ ADC ≅ ∆ ABC .

What is triangle ?

A triangle is a three-sided polygon, which has three vertices. The three sides are connected with each other end to end at a point, which forms the angles of the triangle. The sum of all three angles of the triangle is equal to 180 degrees.

To find that ∆ ADC ≅ ∆ ABC,

Angle BAM = angle BAC and angle DAM = angle DAC (same rays). Thus triangle ABC is congruent to triangle ADC by SAS, since the two angles BAC and DAC above are congruent and also AB = AD (by hypothesis) and AC = AC.

By ASA rule ∆ ADC ≅ ∆ ABC .

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The area of the regular octogon is 196.15 square inches.

For a regular octogon with apothem A and side length L, the area is given by:

area =(2*A*L) * (1 + √2)

Here we know that:

A = 7in

L = 5.8 in

Replacing these values in the area for the formula, we will get the area:

area = (2*7in*5.8in) * (1 + √2)

area = 196.15 in²

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The time taken by the planes when they are 2000 miles apart is 2 hours.

We all know that formula of distance, speed and time is given by  distance = speed*time or time = distance/speed

Let x be the number of hours that the two planes will be 2000 miles apart.

Let 430x be the distance traveled by the first plane at 430 miles per hour

and 570x be the distance traveled by the second plane at 570 miles per hour.

here, 430x +570x =2000 is the total distance travelled by the first plane and the second plane

Solving yields the following steps:

1000x = 2000

Dividing 1000 to both sides of the above equation, we get

1000x/1000=2000/1000

So the value of x will be equivalent to 2

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The correct answer is c. frequency polygon.

A chart that contains a continuous line representing the frequencies of scores within a class interval is known as a frequency polygon. Frequency polygons are graphical representations of frequency distributions, which show the number of observations or data points falling within each interval or class.

A histogram, option a, is a graphical representation of data where the data is divided into intervals and displayed as bars. It does not include a continuous line.

Option b, standard deviation, is a measure of the dispersion or spread of a dataset, and it is not directly related to the representation of frequencies.

Option d, frequency distribution, refers to a tabular representation of data that shows the number of observations or data points falling within each interval or class, but it does not include a continuous line plot.

In summary, a frequency polygon is the chart that contains a continuous line representing the frequencies of scores within a class interval.

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Answer: 24x^6e^4/7ry^3

Step-by-step explanation:

Answer:

c = -1/4

e = 1 2/5

Step-by-step explanation:

4c - 5 = -6

add 5 to both sides

4c = -1

divide each side by 4

c = -1/4

5e + 2 = 9

subtract 2 from both sides

5e = 7

divide both sides by 5

e = 1 2/5

-Chetan K

Answer:

c = -1/4

e = 7/5

Step-by-step explanation:

1. 4c - 5 = -6, 4c = -1, c = -1/4

2. 5e + 2 = 9, 5e = 7, e = 7/5

The area of the regular polygon with an apothem of 15 inches will be 2338.27 square inches.

Let 'a' be the apothem and 'b' be the regular side length.

Then the area of the regular polygon will be

A = 3 × a × b

We know that each angle of the regular hexagon is 60°.

Then the base length is given as,

b = 2a tan θ

b = 2 x 15 x tan 60°

b = 51.96 in

Then the area of the regular hexagon is given as,

A = 3 × a × b

A = 3 × 15 × 51.96

A = 2338.27 square inches

The area of the regular polygon with an apothem of 15 inches will be 2338.27 square inches.

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1.35% is the percentage change in the population of the city that grew from the years 2010 to 2020.

The population of the city = 89,000

Percentage in the growth of people from 2010 to 2015 = 6.8%

Percentage in the decline of people from  2015 to 2020 = 4.9%

The formula to calculate the percentage change is:

percentage change = (new value - old value) / old value x 100%

To calculate the population of the city after the growth of 6.8%

Population in 2015 = 89,000 x (1 + 6.8/100)

Population in 2015 = 95,012

To calculate the population of the city after the decline of 4.9%

Population in 2020 = 95,012 x (1 - 4.9/100)

Population in 2020 = 90,199.88

Population in 2020 = 90,200

The total change in the percentage of growth of population in the city is:

percentage change = (new population - old population) / old value * 100%

percentage change = (90,200 - 89,000) / 89,000 x 100%

percentage change = 1,200 / 89,000 x 100%

percentage change = 1.35%

Therefore, we can conclude that the population in the city grew by 1.35% from 2010 to 2020.

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Answer:

I think true

Step-by-step explanation:

i am not sure but f(1)=5 hereA=1 andB=5 so i belif this is true function

Answer:

yes it is true

Step-by-step explanation:

Answer:

Probability [Randomly choose plant Juan's mother want] = 3 / 5

Step-by-step explanation:

Given:

Total number of plant in store = 30 plants

Number of plant kind Juan's mother want = 18

Find:

Probability [Randomly choose plant Juan's mother want]

Computation:

Probability of an event = Number of favorable outcome / Total number of outcomes

Probability [Randomly choose plant Juan's mother want] = Number of plant kind Juan's mother want / Total number of plant in store

Probability [Randomly choose plant Juan's mother want] = 18 / 30

Probability [Randomly choose plant Juan's mother want] = 3 / 5

Answer:

360-(26x2)

=360-52

=308

\(15x - 26 = 308 \\ 15x = 308 + 26 \\ 15x = 334 \\ x = 334 \div 15 \\ x = 22.27 \: or \: \frac{334}{15} \)

Answer:

x=12

Step-by-step explanation:

Since we know two arcs measure already,

\(360 - 26 - 26 = \)

\(360 - 52 = 308\)

Then since those are vertical angles, just divide 308 by 2

\( \frac{308}{2} = 154\)

Set 15x-26=154

\(15x - 26 = 154\)

\(15x = 180\)

\(x = 12\)

a) The fire is out of the reach of helicopter 1.

b) Only helicopter 3 can be sent to stop the fire.

We have both the location of the fire and the initial position of the three helicopters set on a Cartesian plane. The locations are listed below:

The distance is found by the straight line distance formula, an application of Pythagorean theorem:

a) \(d = \sqrt{[1 - (- 3)]^{2}+[4-(-5)]^{2}}\)

\(d = \sqrt{4^{2}+9^{2}}\)

\(d = \sqrt{97}\)

d ≈ 9.849

The fire is out of the reach of helicopter 1.

b) Helicopter 2

\(d = \sqrt{[- 2 - (- 3)]^{2}+[3 - (- 5)]^{2}}\)

\(d = \sqrt{1^{2}+8^{2}}\)

\(d = \sqrt{65}\)

d ≈ 8.062

Helicopter 3

\(d = \sqrt{[4 - (- 3)]^{2}+ [- 2 - (-5)]^{2}}\)

\(d = \sqrt{7^{2}+3^{2}}\)

\(d = \sqrt{58}\)

d ≈ 7.616

Only helicopter 3 can be sent to stop the fire.

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Answer: D.

Step-by-step explanation:

-2/20 = -0.1, 0.1 is the closet one to -3