Tim thought of a number X, multiplied it by 15 then subtracted it by 3. and then he told the result Y to Jim. write the formula that will help Jim to guess Tim's number if he knows Y

The probability that a data value is between 56 and 64 is 62.5%. Option D is the correct answer.

The given normal distribution has the following parameters:

Mean = 62

Standard deviation = 4

To find the probability that a data value is between 56 and 64, we need to find the z-scores corresponding to these values. Using the z-score formula, $$z=\frac{x-\mu}{\sigma}$$

Where x is the data value, µ is the mean, and σ is the standard deviation. Substituting the given values, we get:

For x = 56,$$z=\frac{56-62}{4}=-1.5$$For x = 64,$$z=\frac{64-62}{4}=0.5$$

Now we need to find the probability that a data value is between these z-scores using the standard normal distribution table. The table gives the area under the curve to the left of a given z-score. To find the area between two z-scores, we need to find the difference between the areas to the left of the two z-scores.

Using the standard normal distribution table, we find:

Area to the left of z = -1.5 is 0.0668

Area to the left of z = 0.5 is 0.6915

Therefore, the area between z = -1.5 and z = 0.5 is:0.6915 - 0.0668 = 0.6247

Rounding off to the nearest tenth of a percent, we get 62.5%. Hence, the correct option is D.

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Answer:

3000

Is Your Answer    

Answer:

3000

Step-by-step explanation:

The least square regression line implies a mathematical equation that models the relationship between the dependent and independent variables. Hence, it may be used to predict a value of y if the corresponding x value is given. The least square regression line also called the best fit line, gives a mathematical relationship between variables in slope-intercept form.The predicted value of y or x if the corresponding value of either variable is given.

what is regression?

A statistical method called regression links a dependent variable to one or more independent (explanatory) variables. A regression model can demonstrate whether changes in one or more of the explanatory variables are related to changes in the dependent variable.

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The expression that can be used calculate the cost of the Ross dinner before adding tax and a tip is 4( 11.50 + 1.50 + 2.75)

= $46

= $6

= $11

Total cost of the family's dinner = Total cost of pasta dish + Total cost of each drink + Total cost of another drink

= $46 + $6 + $11

= $63

Alternatively,

Total cost of the family's dinner = 4( 11.50 + 1.50 + 2.75)

Complete question:

Ross family recently dined at an italian restaurant. each 4 family members ordered a pasta dish that cost $11.50, a drink that cost $1.50, and $2.75

write an expression that could be used to calculate the cost of the family's dinner before adding tax and a tip.

what was the cost of dining out for the ross family

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The missing quantity is 100 books in the double number line.

A mathematical assessment of two numbers is called a proportion. If two sets of provided numbers rise or fall in the same relation, then the ratios are said to be directly proportional to each other. Proportions are represented by the symbols "::" or "=".

Let the missing quantity be x in the double number line.

According to the given condition, we can write the proportion would be as:

40 books : 2 boxes = x books : 5 boxes

⇒ 40 / 2 = x / 5

Apply the cross-multiplication operation,

⇒ 40 × 5 = 2x

⇒ 2x = 200

⇒ x = 200/2

⇒ x = 100

Therefore, the missing quantity is 100 books in the double number line.

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Answer:

Step-by-step explanation:

\(f(x) = 3x^{2} +1\\f(-2) = 3(-2)^{2} +1 = 12 + 1 =13\\\)

The answer is 13.

Hope that helps!

Answer:

\(f(-2) =13\)

Step-by-step explanation:

\(f(x) = 3x^2+1\), f(-2)

\(f(x) = 3x^2+1\)

\(f(-2) = 3(-2^2)+1\)

\(f(-2) = 3(4)+1\)

\(f(-2) = 12+1\)

\(f(-2) =13\)

Hope this helps!

The null hypothesis in a one-way ANOVA test is that there is no treatment effect. This means that the mean scores of the groups being compared are not significantly different. The one-way ANOVA test is a statistical method used to compare the means of three or more groups.

The one-way ANOVA test requires that certain assumptions be met, including that the data is normally distributed and that the variances of the groups being compared are equal. If these assumptions are met, then the test can be used to determine whether there is a significant difference between the means of the groups. The test works by comparing the variability between the groups to the variability within the groups.

If the variability between the groups is larger than the variability within the groups, then it is likely that there is a significant difference between the means of the groups. The alternative hypothesis in a one-way ANOVA test is that there is some treatment effect, which means that at least one of the group means is different from the others.

If the null hypothesis is rejected, then the alternative hypothesis is accepted, and it can be concluded that there is a significant difference between the means of the groups. The one-way ANOVA test is useful for determining whether there is a significant difference between the means of several groups, but it does not provide information about which specific group means are different. To determine which group means are different, post hoc tests can be performed.

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Answer:

=3x−4y+4

please Brainiest

Step-by-step explanation:

Let's simplify step-by-step.

3x−4y−8+12

=3x+−4y+−8+12

Combine Like Terms:

=3x+−4y+−8+12

=(3x)+(−4y)+(−8+12)

=3x+−4y+4

Answer:

SELLING PRICE OF CYCLE = 2250RS

LOSS MAN SUFFERED = 50RS

Step-by-step explanation:

COST PRICE = SP + LOSS

CP = 2250 + 50

CP = 2300 RS

FORMULA OF PROFIT = SP - CP

TO MAKE PROFIT OF 80 RS

80 = SP - 2300

 SP = 2380 RS

HE SHOULD SELL THE CYCLE AT 2380 TO MAKE PROFIT OF 80 Rs

                                          Thank you

                           PLEASE MARK AS BRAINLIEST

Answer:

rs 2380

Step-by-step explanation:

→ Add rs 50 to the selling price to not make a profit or loss

2250 + 50 = 2300

→ Add rs 80 to the answer above

80 + 2300 = 2380

According to the question we have  the 99% UCB on the mean time of the race is 223.

The formula for finding the upper confidence bound (UCB) is UCB = Mean + (Zα/2)(σ/√n), where Mean is the sample mean, Zα/2 is the z-score for the desired level of confidence, σ is the population standard deviation (which is not given, so we'll use the sample standard deviation instead), and n is the sample size.

We are given the sample of times as follows:137, 143, 153, 162, 168, 176, 190, 192, 196, 203, 218, 223, 236, 243, 252, 269, 271, 276, 283, 287.

We'll need to calculate the sample mean and standard deviation before we can find the UCB. Using a calculator, we get: mean ≈ 207.65s ≈ 48.41 Next, we'll use a table or calculator to find the z-score for a 99% confidence interval, which is Zα/2 = 2.576.

Now we can plug in the values we know to get the UCB:UCB = mean + (Zα/2)(σ/√n)UCB ≈ 207.65 + (2.576)(48.41/√20)UCB ≈ 223.02 .Therefore, the 99% UCB on the mean time of the race is 223.

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Answer:

Read below :)

Step-by-step explanation:

So, you have 80 peeps total, right? let's separate them into their core numbers

80 peeps

19 have Crocs

3 have neither

4 have both

61 people with no crocs. of them, 4 have flip flops as well. 80 -3 = 77 so forget the 80 from now on, let's work with 77.

The MIDDLE of the Penn Diagram, where they intersect, 4 people have both.

On the LEFT, 58 people have flip flops, and on the RIGHT, 23 people have Crocs.

The population mean of the data is 6.

The population has n = 16 scores.

The sum of all of the scores is equal to 96.

Therefore, the population mean can be found as follows:

The population mean is the mean or average of all values in the given population.

The population mean is represented mathematically as follows:

population mean = sum of terms / number of terms

Therefore,

sum of terms = 96

number of terms = 16

Hence,

population mean =  = 96 / 16

population mean =  6

Therefore, the population mean of the data is 6.

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Answer:

Multiplication

The solution of given equation x = -20

Step-by-step explanation:

step (i) :-

given equation = -(x/4) = 5

multiply '1' on both sides we get

\( = - (( - \frac{x}{4} )) = - 5\)

\( = \frac{x}{4} = - 5\)

step (ii) :-

multiply '4' on both sides we get

\( = \: \: \: \: \: \frac{x}{4} \: \: \times \: 4 \: \: = - 5 \times 4\)

Cancellation '4' on left side we get

x = -20

conclusion:-

The solution of given equation x = -20

Point G is two, which divides the directed line segment from D to F into a 5:4 ratio at that place.

The general equation for every straight line is y = mx + c, where m is the gradient (or degree of steepness) of the line and c is the y-intercept (the point in which the line crosses the y-axis).

The variables x and y are related to coordinates on the line in the linear equation y = mx + c.

The formula y = mx + c yields a result for y when we enter a value for x.

As y depends on the value of x, it follows that x is an independent variable and y is a dependent variable.

According to our question-

From negative five to positive ten is a number line.

Points D and F are at -2 and +7, respectively.

The distance between point D and F is,

=9

If Point G divides the directed line segment from D to F into a 5: 4 ratio, then,

=2

Hence, The directed line segment from D to F is divided into a 5:4 ratio at point G by the number 2.

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10.59 is the value of the given side b.

In our case, we know that side A has a length of 15 units and is opposite angle A, which measures 27 degrees.

Using the sine rule, we can write:

b/sin(27°) = 15/sin(40°)

To find the value of b, we can rearrange the equation:

b = (15 * sin(27°)) / sin(40°)

evaluate the trigonometric functions and calculate b:

b ≈ 10.59

Therefore, using the sine rule of the triangle, we find that the value of side b is approximately 10.59 units.

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The probability that a randomly selected resident is in favor of the dog park is 7/18.

Probability is used to calculate the chances that an event would happen. The probability the event occurs with certainty is 1 and the probability that the event does not occur with certainty is 0.

The probability that a randomly selected resident is in favor of the dog park = number of students in favor of the dog park / total number of residents

35/ 90

Express the fraction in its simplest form by dividing the numerator and the denominator by 5

= 7 / 18

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The 68th percentile on the standard normal curve corresponds to the mean value of the data set. This statement is false.

The 68th percentile on the standard normal curve corresponds to one standard deviation away from the mean. In other words, approximately 68% of the data falls within one standard deviation of the mean on the standard normal distribution. This is a property of the normal distribution, which is a continuous probability distribution commonly used in statistics.

To clarify, the mean value of a data set is the arithmetic average of all the values in the data set. It is not directly related to the 68th percentile on the standard normal curve. The mean is a measure of central tendency and is influenced by all the data values, while the percentile is a measure of relative position in the distribution of data.

Therefore, it is important to understand the difference between percentiles and measures of central tendencies, such as mean, median, and mode, when analyzing data using statistical techniques.

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The probability that the three pieces can be assembled into a triangle is 25%

Let the length of the stick be 1, so each break can occur at a position in the interval [0,1]. Let x and y be the two breaks in the stick. Then the area of the region in the square bounded x=0, x=1, y=0, y=1, which represents combinations of x and y, for which we can form a triangle. Since the area of the whole square is 1, the area of the region inside is the probability of the triangle.

If y>x, then the lengths of the pieces are x, y-x, and 1-y.

The triangle inequality must hold for each combination of edges.

for  y>x ...

x+y−x≥1−y

x+1−y≥y−x

y−x+1−y≥x

these simplify to...

for  y>x ...

y≥1/2

x+1/2≥y

x≤1/2

If we cut our 1x1 square into two triangles along the line x=y,

then the region in the upper triangle which satisfies the inequalities above forms a smaller triangle which connects the midpoints of the upper triangle.

The lower triangle (x>y), is just a reflection about x=y of the upper triangle, so together, the entire region looks like a bow-tie at a 45 degree angle.

This region takes up 25% of the square,

Thus, the probability that the three pieces can be assembled into a triangle is 25%

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There are two main subtypes of quantitative data, which are discrete data and continuous data. Each subtype has different techniques for analysis.

1. Discrete data: This type of data represents whole numbers or counts that can only take specific values. Examples include the number of students in a class or the number of cars in a parking lot. Techniques used to analyze discrete data include:
  a. Frequency distribution: A summary of the number of times each value appears in the dataset.

 b. Measures of central tendency: Calculating the mean, median, and mode of the dataset to understand its central point.

 c. Measures of dispersion: Assessing the range, variance, and standard deviation to understand the spread of the data.

2. Continuous data: This type of data represents measurements that can take any value within a range, such as height, weight, or temperature. Techniques used to analyze continuous data include:

 a. Histogram: A graphical representation of the distribution of the data, using bars to represent the frequency of values within specific intervals.

  b. Probability density function: A mathematical function that describes the probability of a continuous random variable falling within a specific range.

  c. Regression analysis: A statistical method for analyzing the relationship between a dependent variable and one or more independent variables.

Both discrete and continuous data can also be analyzed using inferential statistics, such as hypothesis testing and confidence intervals, to make inferences about a population based on a sample of the data.

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a) The expected number of people to die before their 71st birthday is given as follows: 128.

b) The probability that a 67 year old woman will live to her 68th birthday is given as follows: 0.8876 = 88.76%.

The parameters that are needed to calculate a probability are listed as follows:

Then the probability is calculated as the division of the number of desired outcomes by the number of total outcomes.

0.025679 of the 70 year old men die, hence the expected number out of 5000 is given as follows:

0.025679 x 5000 = 128.

The probability for item b is given as follows:

0.016798/0.018925 = 0.8876 = 88.76%.

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Answer:

-3/7

Step-by-step explanation:

Hi,

First of all, we know that the slope is not undefine because both the x-coordinates are not the same.

To find the slope, do change in y/change in x. Here, it would be ((2/7)-(5/7))/(2-1) or (-3/7)/1. Hence, the slope is -3/7.

Answer:

36

Step-by-step explanation:

=4+13+19

=17+19

=36

Answer:

Pemdas

Step-by-step explanation:

24/6 = 4

39/3 = 13

4 + 13 + 19 = 36

Answer:

B. 60%

Step-by-step explanation:

Formula to be used:

Percent of Increase/Decrease = Final Price ÷ Original Price x 100

Substitute

510 ÷ 850 = 0.6

Turn into percentage

0.6 x 100 = 60%

Answer:

230

Step-by-step explanation:

If you simply add the numbers step by step. You will end up with 230.

the equation that verifies that the value of x in the diagram is equal to 10 is 7 = 1/2(4 + x). Option A is correct

The given diagram is a quadrilateral. Using the mid-segment theorem of shapes;

7 = 1/2(4 + x)

Cross mulltiply

7 * 2 = 4 + x

14  = 4  + x

Subtract 4 from both sides:

14 - 4 = 4 + x - 4

14 - 4 = x

x = 10

Hence the equation that verifies that the value of x in the diagram is equal to 10 is 7 = 1/2(4 + x)

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According to BPT theorem

Lets see how

Yes this satisfies

Option D

Answer:

d. (-4,2)

Step-by-step explanation:

Here, Y = 1/2X + 4

Or, –5/4X – 3 = 1/2X + 4 (From equation 1 and 2)

Or, –5/4X = 1/2X + 4 + 3

Or, –5/4X = 1/2X + 7

Or, 1/2X + 7 = –5/4X

Or, 7 = –5/4 X – 1/2 X

Or, –5/4X – 2/4 X = 7

Or, –7/4 X = 7

Or, –7 X = 7 × 4

Or, –7X = 28

Or, X = 28/–7

Or, X = – 4

Here, in the fourth option, we can see that X= –4, Hence Option D— (-4,2) Is correct.

Answer: 3/2

Step-by-step explanation: just believe me

The value of the dilation factor is 3/2 after a dilation centered at the origin, and the image of the CD is C'D' option first is correct.

The transformation dilation is used to resize an item. Dilation is a technique for making items appear larger or smaller. The image created by this transformation is identical to the original shape.

We have CD after dilated from centered it becomes C'D'

Let m be the dilation factor:

Then,

6m = 9     ⇒  m = 3/2

-4m - -6    ⇒  m = 3/2

2m = 3      ⇒  m = 3/2

-8m = -12  ⇒   m = 3/2

Thus, the value of the dilation factor is 3/2 after a dilation centered at the origin, and the image of the CD is C'D'. If the coordinates of the endpoints of these segments are C(6,-4), D(2,-8), C'(9,-6), and D'(3.-12)

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Answer: π

Step-by-step explanation:

To convert from degrees to radians, you want to multiply the degrees by (π/180). In this case, we would multiply 180° by (π/180).

\(180*\frac{\pi }{180} =\pi\)

According to the property of proportions,

Product of means = Product of extremes

So, simply we did cross multiplication.

Step-by-step explanation:

56/3 is the answer. Refer to the attachment for the solution. :)

The amount of square inches of the cake that are covered with icing is 201.06, calculated by using the formula (π * radius2), with π equal to 3.14 and the radius equal to 8 inches.

1. Use the formula (π * radius2), with π equal to 3.14

2. The radius is half of the diameter, divide the diameter (16 inches) by 2

3. Radius = 16 inches / 2 = 8 inches

4. Calculate π * radius2: 3.14 * (8 inches)2 = 201.06 square inches

π * (8 inches)2

= 3.14 * (64 inches2)

= 201.06 square inches

Dominique is decorating a round cake with fruits and has frosted just the top of the cake. To determine the area of the cake that is covered with icing, we can use the formula (π * radius2). Since the cake is round, we can determine the radius of the cake by dividing the diameter of the cake (16 inches) by 2, resulting in the radius being 8 inches. We can then calculate the area of the cake covered with icing by multiplying π by the radius squared. Using the number 3.14 for π, the calculation is 3.14 * (8 inches)2, which equals 201.06 square inches. Therefore, 201.06 square inches of the cake are covered with icing.

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