What is the score associated with 1 standard deviation below the mean if a set of scores has a standard deviation of 4 and a mean of 54? a. 62 b. 46 c. 50 d.58

We will see that the given equation is false for all values of z, thus, the equation has no solutions.

Here we have the absolute value equation:

3*|2z + 9| + 12 = 10

To solve this we first need to isolate the absolute value part, so let's do that:

3*|2z + 9| + 12 = 10

3*|2z + 9| = 10 - 12 = -2

|2z + 9| = -2/3

Now, remember that the absolute value is always a positive quantity, then the above equation is false, an absolute value never can be equal to a negative number.

Then our equation has no solutions.

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When an object is to be generated, classes are utilized as templates, whereas methods are functions that are called or invoked.

A class is a template specification of the method(s) and variable(s) of a certain sort of object in object-oriented programming. As a result, an object is a particular instance of a class; instead of variables, it holds real values. One of the fundamental concepts of object-oriented programming is the class.

A class outlines the information included in the objects that are a part of it, including the actions and a collection of data fields known as instance variables (called methods). An object is an element (or instance) of a class, and objects exhibit the behaviors of the classes in which they belong.

We use the self keyword to declare the attribute purchase price (type int), initializing the value to 0.

Therefore, the purchase price attribute declaration is as follows:

self.purchase price equals zero

We just need to invoke the model year and purchase price variables to define the print info() function.

The print info() function is therefore defined as follows:

   def print_info(self):

   print("Car's information:")

   print(" Model year:", self.model_year)

   print("Purchase price:", self.purchase_price)

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The graph that shows the function Y=⌊x⌋+3 is given by the image shown at the end of the answer.

The function in this problem is defined as follows:

Y=⌊x⌋+3.

The term ⌊x⌋ is the floor function of x, giving the greatest integer that assumes a value less than x.

The intervals to the function are given as follows:

Then the translation is given as follows:

Y = y + 3.

Meaning that the function was shifted three units up.

Thus the correct graph is the bottom right graph, given by the image shown at the end of the answer, because:

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Answer:

I believe the answer is A because one is a reflection and another is a translation.

Answer:

0.8888888..... repeating

Step-by-step explanation:

Answer:

72/1

Step-by-step explanation:

multiply 8 and 9/1

The angle of elevation of the femur is 71°.

The angle of elevation:

The angle is formed by the line of sight and the horizontal plane for an object above the horizontal.

Here we have to find the angle of elevation of the femur.

Data given:

length of femur = 18 inches

elevated = 6.2 inches

Formula to calculate the angle of elevation:

Tangent of the angle of elevation = height of the object/distance from the object

tan Ф = 18/ 6.2

tan Ф = 2.903

Ф = [tex]tan^{-1}[/tex]( 2.903)

   = 71°

Therefore the angle of elevation is 71°.

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Answer:

6x-21

Step-by-step explanation:

6x*3 - 7*3

If you pay $25 per month for your cell phone and an additional $5 for each picture you send then y=25x+5 is the equation  to represent the cost of your phone.

Two or more expressions with an Equal sign is called as Equation.

Given that you pay $25 per month for your cell phone

An additional $5 for each picture you send

We have to find the equation which represent the cost of your phone

Let x be the number of months.

The equation should be in the form of y=mx+b

in the given equation m is the slope and b is the y intercept or the additional fee.

y=25x+5 is the required equation

Hence, if you pay $25 per month for your cell phone and an additional $5 for each picture you send then y=25x+5 is the equation  to represent the cost of your phone.

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Answer:

The total profit for the grain merchant selling 600 quintals of rice is Rs 12800. To calculate this, we first need to calculate the profit on one quintal. The profit percentage is 7%, so if a quintal costs Rs 250 the profit is 7% of 250 which is Rs 17.5. Now we multiply this with the number of quintals sold, which is 600, to get Rs 10500 as the profit. We then add in the overhead charges of Rs 1000 to get a total profit of Rs 12800. The selling price of 600 quintals of rice is therefore Rs 12800 plus Rs 250 times 600, which equals Rs 180000.

Commission rate = 6%

Sales = $43,000

Commission = 6% of 43,000

= 0.06 × 43,000

= $2,580

Suppose sales would double. What would be true about the​ commission?

If sales doubles, that is,

Sales = $86,000

Then, commission also doubles

Commission = $5,160

Check:

Sales = $86,000

Commission rate = 6%

Commission = 6% of $86,000

= 0.06 × 86,000

= $5,160

By using the concept of subtraction and multiplication, it can be calculated that

Ashley should buy 5 balls

What is subtraction and division?

To find how big or small one number is from the other, then the operation used is called subtraction

Division is the process by which value of single unit can be calculated from the value of multiple unit.

The number to be divided is known as dividend, the number by which the dividend is divided is the divisor, the result obtained is the quotient and the remaining part is the remainder.

There is a well known formula for division

Divisor x Quotient + Remainder = Dividend.

This is a word problem on subtraction and division

Total length of Wool Ashley required = 900 [tex]\times[/tex] 3 = 2700 ft

Length of wool Ashley has = 200 ft

Length of wool Ashley still needed = 2700 - 200 = 2500 ft

Length of wool in each ball = 500

So Number of balls required = 2500 [tex]\div[/tex] 5 = 5

Ashley should buy 5 balls

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Using the t-distribution, we have that the 95% confidence interval for the true mean number of pushups that can be done is (9, 21).

Given that,

One day, a teacher of statistics randomly selected 10 pupils' names from a hat and instructed them to complete as many pushups as they could before class began. The 10 students who were chosen at random performed an average of 15 pushups, with a standard deviation of 9. Assume that the population's distribution of the maximum number of pushups is roughly normal.

We have to find what is the standard error of the mean.

We know that,

For this problem, we have the standard deviation for the sample, thus, the t-distribution is used.

The sample mean is of 15 is x=15 .

The sample standard deviation is of 9 is s=9.

The sample size is of 10 is n=10.

First, we find the number of degrees of freedom, which is the one less than the sample size, thus df = 9.

Then, looking at the t-table or using a calculator, we find the critical value for a 95% confidence interval, with 9 df, thus t = 2.2622

The margin of error is of:

M=ts/n

Then:

M=2.2622(9/√10)

M=6

The confidence interval is:

x±M

x-M=15-6=9

x+M=15+6=21

Therefore, Using the t-distribution, we have that the 95% confidence interval for the true mean number of pushups that can be done is (9, 21).

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The measure of the smallest angle A of the triangle is 29°, whose second angle is 6 degrees larger than the smallest angle and the third angle is 4 times as big as the smallest one.

we know that the Sum of the measure of all the angles in the triangle is 180 degrees.

Let,  ∠ A = smallest angle

  ∠ B = A+6

 ∠ C = 4 (∠A)

So, we can write that,

∠ A + ∠ B +  ∠ C = 180°

∠A + (∠A+6) + 4∠A = 180°

6 +  ∠A + ∠ A + 4∠A = 180°

6 + 6 ∠A = 180°

6∠A = 180° - 6

6 ∠A = 174

∠A = 174/6

∠A = 29°

Hence, the smallest angle A is 29°

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Answer:

Deci (símbolo d) es un prefijo del Sistema Internacional que indica un factor de 10−1 (1/10) o una décima parte.

The number of times that the base unit contains the corresponding prefix deci is 10.

Base units are the units which are used in measurements as the basic ones from which the other units of measurements has been derived.

Some of the common base units are second, meter, kilogram, etc.

We have to find the number of times the base unit contains the corresponding unit with prefix deci.

This means that how many times 1 meter contains decimeter.

This goes for each base units.

We know that,

1 meter = 10 decimeters

Any of the base units is 10 times the corresponding unit with prefix deci.

Hence the number of times that a base unit contains the corresponding unit with prefix deci is 10.

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The question in English is,

How many times does the base unit contain the corresponding prefix deci?

Answer:7

Step-by-step explanation:

Can write it as

10t -15 - 7.5t = 6 - 0.5t

2.5t -15 = 6 - 0.5

3t - 15= 6

3t = 21

t= 7

It is concluded that the ratio of female and male viewers who enjoy the game shows the difference.

According to the survey-

360 out of 500 females enjoy the game.

Thus,

Ratio female = number of females who enjoy/ total number of females.

Ratio female = 360/500

Ratio female = 0.72

Now, 600 out of 800 males enjoy a game show.

Ratio male = number of males who enjoy/ total number of males.

Ratio male = 600/800

Ratio male = 0.75

Thus, Ratio female ≠ Ratio male

Therefore, it is concluded that the ratio of female and male viewers who enjoy the game shows the difference.

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The greatest common factor of 30+42 according to the distributive property is 6×12.

The distributive law, which states that equality is always true in elementary algebra, is generalized by the distributive principle of binary operations in mathematics.

For instance, addition is said to be more evenly distributed than multiplication in elementary mathematics.

So, here we wish to calculate the largest common factor between the numbers 30 and 42, which equals the total of 30 and 42.

Going one for one, the biggest divisor of 30 is 15, and since 42 cannot be divided by 15, this means that there isn't a frequent divisor of 30 and 42.

Since 10 is not a divisor of 42 and is the second largest divisor of 30 (10*3 = 30), it is not a common divisor of both 30 and 42.

6, which is also a divisor of 42 (6*7 = 42), is the third-largest divisor of 30 (6*5 = 30).

Then both 30 and 42 have 6 in common the most.

We may factor the total now by:

30 + 42 = 6*5 + 6*7 = 6*(5 + 7) = 6*12

Therefore, the greatest common factor of 30+42 according to the distributive property is 6×12.

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Correct question:
Apply the distributive property to factor out the greatest common factor. 30+42

Answer:

I think 6.2 years

Step-by-step explanation:

I THINK OK

Answer:

Negative one-half (negative 2) (x + 3) = negative 10 (negative one-half

Answer: $36

Step-by-step explanation: 6 times 2 is 12

12 times 3 is 36

The probability that exactly 17 households own a DVD player is b) 0.0124

P = probability of own DVD player = 53% = 0.53

n = sample of households = 22

x = number of households own a DVD player = 17

Since it is binomial experiment, we use binomial probability formula to calculate the probability.

P(X) = [tex]^{n}C_{x}\times P^{x}\times (1-P)^{n-x}[/tex]

With combination formula as below,

[tex]^nC_x[/tex] = [tex]\frac{n!}{x!(n-x)!}[/tex]

P(X) = [tex]^{22}C_{17}\times 0.53^{17}\times (1-0.53)^{22-17}[/tex]

= [tex]\frac{22!}{17!(22-17)!}\times 0.53^{17}\times 0.47^{5}[/tex]

= 26334 × 0.0000205 × 0.0229345

= 0.0123811

= 0.0124

Thus, the probability is 0.0124 for 17 households own DVD player.

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Answer:

Look at the solution to your other similar question and see if you can figure this one out now.

Step-by-step explanation:

The correct answer is 'Do not reject the null hypothesis as there is not sufficient evidence that the true diameter differs from 0.5 in.'

When the sample size is large and the standard deviation is known, the z-test is typically used.

The T-test is more flexible than the Z-test since the Z-test frequently needs particular circumstances in order to be reliable.

The t test is applied if the population standard deviation is unknown.

Test statistic for one sample t-test is, t = (X‾ - μ0) / (s / √n)
The formula of degrees of freedom for test is, df = n-1 here, n is sample size.

Decision rule:

1. If the P-value is less than the level of significance, the null hypothesis should be rejected; otherwise, it should not be.

2.The null hypothesis is rejected if the t-test statistic value is greater than the t tabulated value; otherwise, the null hypothesis is not rejected.

(a) From the given information, n=15, t=1.66, α =0.05 we can derive

degrees of freedom = df= n-1 which is 15-1 = 14

Thus, the critical value is, 2.145.

Now, since the test statistic value is less than the critical value, do not reject the null hypothesis.

Here, the test statistic value do not lie in the critical region. The null hypothesis cannot be rejected. There is insufficient evidence that the true diameter differs from 0.5 in.

(b) From the given information, n=15, t = -1.66, α =0.05 we can derive

degrees of freedom = df= n-1 which is 15-1 = 14

Thus, the critical value is, -2.145.
Now, since the test statistic value does not lie in the rejection region, do not reject the null hypothesis.
Here, the test statistic value does not lie in the critical region. The null hypothesis cannot be rejected. There is insufficient evidence that the true diameter differs from 0.5 in.

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The number of different possible ways in which the gifts can be given to 3 out of 23 women is 10626.

Each gift can be considered a position given to one of 23 women. The number of ways in which gift can be given to them is :

First gift : 23 possibilities

Second gift: 22 possibilities

Third gift: 21 possibilities

So, the gifts may be given in

23 * 22* 21

= 10626

We could encounter several patterns and number kinds in mathematics. Sequences are included in one of the number patterns.

Repetition is permitted and order is important in the sequence, which is a predetermined group of objects. Formally, a sequence is a function that connects the elements at each point to natural numbers. It has members, which are known as elements or words, just like a set.

The length of the sequence is determined by the number of items. In contrast to a set, the same items might appear more than once in a sequence at various points, and the order does important.

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The number of ways in which captain of the team arrange the 6 bowlers for a game is 720.

For the stated question-

Total members in bowling team = 6.

Number of ways to arrange them = 6!

Number of ways = 6 x 5 x 4 x 3 x 2 x 1

Number of ways = 720

Thus, the number of ways in which captain of the team arrange the 6 bowlers for a game is 720.

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The two given fractions  [tex]\frac{20}{8}[/tex] and [tex]\frac{28}{9}[/tex] do not form a proportion.

How to find fractions that are in the same proportion?

Proportion shows that two fractions are equivalent or equal.

The given fractions are  [tex]\frac{20}{8}[/tex] and [tex]\frac{28}{9}[/tex]

Proportions are expressed in the form a:b::c:d

Where a and b represent antecedent and consequent respectively

This implies that a:b::c:d ⇒ [tex]\frac{20}{8}[/tex] : [tex]\frac{28}{9}[/tex]

The values  [tex]\frac{20}{8}[/tex] = [tex]\frac{28}{9}[/tex]

Since (20x9) is not equal to (8x28)

Multiplying the two sides to get

180=224.  This is a wrong representation.

Therefore the two fractions do not show a proportion

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Answer= The number 6138 is called the numerator or dividend, and the number 2 is called the denominator or divisor.

The quotient of 6138 and 2, the ratio of 6138 and 2, as well as the fraction of 6138 and 2 all mean (almost) the same:

6138 divided by 2, often written as 6138/2.

Read on to find the result of 6138 divided by 2 in decimal notation, along with its properties.

Total number of different chords of the circle passing through point P with integer lengths is equal to 7.

As given in the question,

Radius of the circle = 15units

Longest chord of the circle 'diameter' = 2 × 15

                                                               = 30units

Point 'P' is 9 units away from the circle.

Consider shortest distance( perpendicular) of point P for shortest chord.

Half length of the chord , shortest distance and radius form right triangle.

(1/2) length of the chord = √15² - 9²

                                        = √225 - 81

                                        = 12units

Length of the chord = 2(12)

                                 = 24 units

Different Chords with integer length = 24, 25, 26, 27, 28 , 29 , 30

Total number of different chords = 7

total number of chords = 6 original + 6 mirror image + 1 longest chord

                                       = 13

Therefore, total chords with different integer length passing through the point P of the circle is 7.

The complete question is :

A point P is at the 9 unit distance from the center of a circle of radius 15 unit. How many total number of different chord of the circle passing through the point P and have the integer lengths?

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Answer:

x = -96/7 or -13.714285

Step-by-step explanation:

May I have Brainliest please? My next rank will be the highest one: A GENIUS! Please help me on this journey to become top of the ranks! I only need 9 more brainliest to become a genius! I would really appreciate it, and it would make my day! Thank you so much, and have a wonderful rest of your day!

Answer: 12

Step-by-step explanation: First turn 75% into its decimal form 0.75

Then multiply this by 48.

0.75 x 48 = 36

36 is 75% of 48

Then subtract 36 from 48. This will get you 12.