Is –49 − –78 positive or negative?

1. Thomas Edison used "perspiration" to refer to the physical and mental efforts needed to achieve a meaningful purpose in any human endeavor.

2. As it applies to businesses, it is not enough to develop a business idea or plan, as the business person must be prepared to execute and carry the business idea or plan to fruition.

According to Thomas Edison, the superior intellect or creativity we associate with great minds comes from inspiration (the idea) and perspiration (hard work).

Perspiration literarily refers to the sweat that emanates as someone works hard.

Without a strong working ethic, it will be impossible to achieve great results from only the proposition of great ideas or business plans.

Learn more about Thomas Edison at https://brainly.com/question/26568016

Answer:

Impossible not likely to happen

The length in centimeters of side OP is 8.

A triangle is a plane figure which is bounded by three straight sides, and has a sum of its internal angle to be 180^o.

Two or more triangles can be referred to as similar if the corresponding sides and measure of corresponding internal angles have some common properties on comparison.

Thus on comparing the corresponding sides of the two given similar triangles, we have;

JK/ ON = KL/ OP

2/ 4 = 4/ OP

2OP = 4*4

       = 16

OP = 16/ 2

     = 8

OP = 8 cm

Therefore, the length of side OP is 8 cm.

Learn more about the properties of similar triangles at https://brainly.com/question/27996834

#SPJ1

The p-value of the given hypothesis is; 0.9999

The formula for the z-score of proportions is;

z = (p^ - p)/√(p(1 - p)/n)

where;

p^ is sample proportion

p is population proportion

n is sample size

We are given;

p^ = 15% = 0.15

p = 20% = 0.2

n = 5000

Thus;

z = (0.15 - 0.2)/√(0.2(1 - 0.2)/5000)

z = -8.8388

From p-value from z-score calculator, we have;

P(Z < -8.8388) = 1 - 0.0001 = 0.9999

Read more about p-value at; https://brainly.com/question/4621112

#SPJ1

A

B, C, and D all don't use math correctly, because |-6.3| is 6.3

The 2 lines that surround the negative (or positive) number always result in the answer being the exact same, but positive, unless it looks something like this: -|-6.3|      then it would result in -6.3

Have a luvely day!

Thus, the test for homogeneity follows the same procedures as the test for independence because the assumptions for performing the chi-square test for independence and chi-square test for homogeneity are the same.

The procedures for the chi-square test of homogeneity are the same as for the chi-square test of independence. The data is different for both tests. Tests of independence are used to determine whether there is a significant relationship between two categorical variables from the same population. One population is segmented based on the value of two variables. So there will be a column variable and a row variable.

The chi-square test of homogeneity of proportions can be used to compare population proportions from two or more independent samples, determining whether the frequency counts are distributed identically among different populations.

For more information about chi-square test,visit

https://brainly.com/question/17142834

#SPJ4

Answer:

2.8

Step-by-step explanation:

A = (0 - 0) / (9.2 - 6.4) = 0 / 2.8 = 0

Answer:

0.28

Step-by-step explanation:

I took the test and said that 2.8 was incorrect and 0.28 was correct.

Answer:

top 8, middle 7, 16, bottom 13

If store c sells 122,420 products, then store b sells 6121 products.

Let x = number of products store a sells

If store a sells one fifth as many as store c, then we can write this expression as:

x = 1/5(122,420)

Evaluating, we have:

x = 24,484

If store a sells four times as many products as store b, then we can write the expression for the number of products store b sells as:

x = 4(number of products store b sells)

Plug in the value of x, we have:

24,484 = 4(number of products store b sells)

number of products store b sells = 6121

Therefore, store b sells 6121 products.

Learn more about expression here: https://brainly.com/question/4344214

#SPJ4

OLAP is used for the analysis of accumulated data, and it requires a data warehouse.

while OLTP is used for transaction processing and requires a database optimized for real-time transaction processing. The analysis of accumulated data is known as Online Analytical Processing (OLAP), and it involves a data warehouse. OLAP is a business intelligence tool used for multi-dimensional analysis of large data sets, while a data warehouse is a central repository that stores historical and current data from multiple sources in a structured manner. OLAP allows users to perform complex queries on large data sets, analyze trends, and make informed business decisions. It is often used in data mining and decision support systems. OLAP tools can be used to slice and dice data, drill down to more detailed data, and roll up to higher levels of summary data. OLAP is primarily used for analytical purposes and is not designed for transaction processing. On the other hand, a data warehouse is designed to support OLAP and is used for storing large amounts of historical data that can be queried and analyzed. Data is extracted from various sources, transformed, and loaded into the data warehouse in a structured format, enabling efficient querying and analysis. OLTP (Online Transaction Processing), on the other hand, is a type of transaction processing that is designed for processing real-time transactions in databases. It is used for day-to-day operations such as order processing, inventory management, and customer management. OLTP is optimized for processing large volumes of transactions in real-time, and is not suitable for analytical purposes.

In summary, OLAP is used for the analysis of accumulated data, and it requires a data warehouse, while OLTP is used for transaction processing and requires a database optimized for real-time transaction processing.

To know more about  accumulated data click here:

brainly.com/question/29638039

#SPJ4

.

The correct answer is False because, If the sample size is large enough (n greater than or equal to 30) the sampling distribution is approximately normal regardless of the shape of the population.

The sample fraction, often called the "p-hat", is the ratio of the number of sample successes to the size of the sample. The standard deviation of (p) decreases as the sample size n increases. This is because n is included in the denominator of the standard deviation formula. That is, (p has) has fewer variables for larger samples. The P-hat (must be a lowercase p with a caret (^) circumflex) indicates the percentage of the sample (this is the x-bar, the average of the samples).

A p-hat (proportion) sampling distribution is a collection of equal-sized repeated sample proportions drawn from the same population to represent it. According to the central limit theorem, the sampling distribution of p-hat is approximately normally distributed for large sample sizes.

To know furthermore about P-Hat at  

https://brainly.com/question/12360461

#SPJ4

If the randomly selected student denies having a visa, the probability that the student also denies having a mastercard is 0.

To calculate the probability that a student denies having a Mastercard given that they have already denied having a Visa, we need to use conditional probability. Let's use the notation:

Dv: the event that a student denies having a Visa

Dm: the event that a student denies having a Mastercard

We want to find P(Dm | Dv), the probability that a student denies having a Mastercard given that they have already denied having a Visa.

We can use Bayes' rule to calculate this probability:

P(Dm | Dv) = P(Dv | Dm) * P(Dm) / P(Dv)

We know that the probability of a randomly selected student denying having a Mastercard is P(Dm) = 0.4, as given in the problem.

We also know that the probability of a randomly selected student denying having a Visa, given that they do not have a Mastercard, is P(Dv | not Dm) = 0.9, as given in the problem. This means that the probability of a student having a Visa and a Mastercard is P(not Dv and not Dm) = 0.1.

To find the probability of a randomly selected student denying having a Visa, we can use the law of total probability:

P(Dv) = P(Dv | Dm) * P(Dm) + P(Dv | not Dm) * P(not Dm)

P(Dv) = 0.6 * 0.4 + 0.1 * 0.6

P(Dv) = 0.24 + 0.06

P(Dv) = 0.3

Therefore, we have:

P(Dm | Dv) = P(Dv | Dm) * P(Dm) / P(Dv)

P(Dm | Dv) = 0 * 0.4 / 0.3

P(Dm | Dv) = 0

This means that the probability that a student denies having a Mastercard, given that they have already denied having a Visa, is 0. In other words, if a student denies having a Visa, they cannot also deny having a Mastercard.

To find more questions on Probability

https://brainly.com/question/25870256

#SPJ4

The gas used by truck is 36.66 mpg.

When graphed, a linear equation always produces a straight line because it is an algebraic equation with each term having an exponent of 1. It is referred to as a "linear equation" for this reason.

One-variable linear equations and two-variable linear equations exist.

Given

A long-distance delivery truck averages 8 miles per gallon when the truck is full.

The miles per gallon improve by 20% when the truck is empty.

The distance delivery truck averages 8 miles per gallon when full, and the amount of gasoline used (g) is expressed in terms of the number of miles driven (\(m_{f}\)).

When the truck is full, the amount of gasoline is shown as,

\(m_{f}\) = d/8

given distance is 160 miles

\(m_{f}\) = 160/8  = 20 mpg

Then,

The miles per gallon improve by 20% when the truck is empty.

The number of miles driven when empty is represented as,

\(m_{e}\) = d/(8 + 1.6)

\(m_{e}\)  = d/9.6

\(m_{e}\) = 160/9.6

\(m_{e}\)  = 16.66 mpg

total gasoline  required = \(m_{e}\) +  \(m_{f}\)  = 20 + 16.66 = 36.66 mpg

Hence the total  gas used is 36.66 mpg.

Learn more about linear equation;

https://brainly.com/question/29739212

#SPJ2

Answer:

true

Step-by-step explanation:

Answer:is it 3?

Step-by-step explanation:

sorry if im wrong im not sure

The expected number of loops is 2.94 by evaluating the expression for the sum of possible number of loops.

In probability and statistics, the expected value is computed by multiplying each potential event by its likelihood of occurring, then adding up all of those values.

Assume there are n noodles. The total ways of selecting 2 ends from n noodles is \(2nC_{2}\). But if 2 ends of same noodle is selected, it will make a loop which happens n of the times.

Probability to choose 2 ends of same noodle = \(\frac{n}{2nC_{2}}\) = \(\frac{1}{2n-1}\)

If ends of 2 different noodles is chosen, it wont create loop and there will be (n-1) noodles remaining for which the same cases repeat.

Therefore the expected number of loops is given by the expression,

\(\frac{1}{2n-1} + \frac{1}{2n-3} + \frac{1}{2n-5} + \frac{1}{2n-7} + ... + \frac{1}{3} + 1\)

Given that number of noodles n = 50. The above expression gives a value of 2.94 for n = 50.

To learn more about expected values visit the below link,

https://brainly.com/question/10675141

#SPJ4

Answer:

exact form 296/3 decimal form 98.6666666 mixed number form 98 2/3

Step-by-step explanation:

Answer:

First result: X = 248/3 or 82.67    Second result: X = 260/3 or 86.57

Step-by-step explanation:

1st one: 7x + 8(x + 1/4) = 3(6x - 90 - 8)

              7x + 8x + 2 = 18x - 270 - 24

                 15x + 2 - 2 = 18x - 246 - 2

                  15x - 18x = 18x - 18x -248

                -3x = 248  -->   -3x/3 = 248/3

                    X = 248/3 or X = 82.67

2nd one: 7x + 8(x+1/4) = 3(6x - 90) - 8

                  7x + 8x + 2 = 18x - 270 - 8

                   15x + 2 - 2 = 18x - 262 - 2  

                    15x - 18x = 18x -18x - 260

                   -3x = 260 --> -3x/3 = 260/3

                        X = 260/3 or X = 86.67

Sorry if none of these are the answer!

The measure of the angle between the lines of approach of the yacht and the cruise ship is about 62.47°.

We are given that a yacht and a cruise ship are 27 miles apart and each is headed directly toward the same port. If the yacht is 18 miles from the port, and the cruise ship is 13 miles from the port, we are to find the measure of the angle between their lines of approach.

This can be done using the Law of Cosines which states that for a triangle with sides a, b, and c, and angle C opposite side c:c² = a² + b² - 2ab cos CLet us assume that the angle between the lines of approach of the yacht and the cruise ship is ∠A. Therefore, we have:cos A = (18² + 27² - 13²) / (2 x 18 x 27)cos A = 1.0972cos A ≈ 0.4519A = cos⁻¹(0.4519)A ≈ 62.47°.

Therefore, the measure of the angle between the lines of approach of the yacht and the cruise ship is about 62.47°.Answer:Angle = 62.47 degrees or about 62.47 degrees (rounded to two decimal places).

Note: You can use the inverse cosine function on your calculator or use the tables in your mathematics textbook to find the cosine inverse of the value of cos A that you get.

Learn more about Law of Cosines here,

https://brainly.com/question/30766161

#SPJ11

The expected value of this gamble is $1.

The expected value of this gamble is the weighted average of all possible outcomes where the weights are the probabilities of each outcome happening.

The formula for expected value (EV) is as follows:

          Expected Value = (Probability of Winning × Amount Won) − (Probability of Losing × Amount Lost)

Hence, substituting the values:

          Expected Value = (0.5 × $10) − (0.5 × $8)

          Expected Value = $5 - $4

          Expected Value = $1

Therefore, the expected value of this gamble is $1.

Learn more problems on the expected value in the given link:

https://brainly.com/question/24305645

#SPJ11

Answer:

m = 24

Step-by-step explanation:

if i'm wrong sorry not that good with math

The composition of functions \( f(x) \) and \( g(x) \), denoted as \( (f \circ g)(x) \), refers to applying the function \( g(x) \) first and then applying \( f(x) \) to the result. On the other hand, \( (g \circ f)(x) \) implies applying \( f(x) \) first and then \( g(x) \) to the result. We need to determine whether these compositions yield the same result or not.

Given \( f(x) = g(x) = 4x - 5 \), we can compute the composition \( (f \circ g)(x) \) as follows:

\[ (f \circ g)(x) = f(g(x)) = f(4x - 5) = 4(4x - 5) - 5 = 16x - 20 - 5 = 16x - 25. \]

Similarly, the composition \( (g \circ f)(x) \) is:

\[ (g \circ f)(x) = g(f(x)) = g(4x - 5) = 4(4x - 5) - 5 = 16x - 20 - 5 = 16x - 25. \]

By comparing the results, we can see that \( (f \circ g)(x) \) is indeed equal to \( (g \circ f)(x) \), which means that for any value of \( x \), the compositions of \( f(x) \) and \( g(x) \) yield the same output. In other words, \( (f \circ g)(x) = (g \circ f)(x) \) for all \( x \) in the domain.

Learn more about composition here

https://brainly.com/question/30660139

#SPJ11

Answer:

teh value is 4.1

Step-by-step explanation:

the absolute value is the number inside the lines, if it wouldve been -4.1 inside the line, the answer still wouldve been 4.1 because it is 4.1 away from 0 on a number line.

hope this helped :)

The length of segment C'D' is given as follows:

C'D' = 2.

A dilation can be defined as a transformation that multiplies the distance between every point in an object and a fixed point, called the center of dilation, by a constant factor called the scale factor.

The length of segment CD is given as follows:

CD = 4. (4 vertical units of difference).

The scale factor is given as follows:

k = 1/2.

Hence the length of segment C'D' is given as follows:

C'D' = 1/2 x 4 = 2.

More can be learned about dilation at brainly.com/question/3457976

#SPJ1

Answer:

Option A

Step-by-step explanation:

The solution is in the image

Answer:

As x approaches 6:

\( \frac{6 - x}{ {x}^{2} - 36 } = - \frac{x - 6}{(x - 6)(x + 6)} = - \frac{1}{x + 6} = - \frac{1}{6 + 6} = - \frac{1}{12} \)

The limit of the given function as x approaches 6 is -1/12. This is achieved by factoring and revising the original function, and then substituting into the revised function.

The student is asking for the limit of the function (6-x) / (x²-36) as x approaches 6. In mathematics, this is a problem of calculus and specifically involves limits. Let's solve this by first factoring the denominator to get (6-x) / ((x-6)(x+6))

By realizing we can revise the numerator as -(x-6), we make it obvious that the limit can be directly computed by substituting x=6 after canceling out the (x-6) terms. The result is -1/12, therefore the limit of the function as x approaches 6 is -1/12.

https://brainly.com/question/37042998

#SPJ11

Answer:

Dont know

Dont know

Dont know

Dont know dont know dont knowwwwwwwwwwwwwww

we have:

P(X > 6) < 0.0668

We can use the standard normal distribution to find probabilities for a normal distribution with mean u and standard deviation 2. Let Z = (X - u)/2 be the standard normal variable corresponding to X.

(A) Since f(6) > f(16), we have P(X < 6) > P(X < 16). Using the standard normal distribution, we can write this as:

P(Z < (6 - u)/2) > P(Z < (16 - u)/2)

Multiplying both sides by -1 and using the symmetry of the standard normal distribution, we get:

P(Z > (u - 6)/2) < P(Z > (u - 16)/2)

Looking up the standard normal distribution table, we can find the values of the right-hand side probabilities for different values of the argument. For example, if we use a table with z-scores and look up the probability corresponding to z = 1.5, we find that P(Z > 1.5) = 0.0668 (rounded to four decimal places).

Therefore, we have:

P(X > 6) < 0.0668

To know more about probabilities refer here:

https://brainly.com/question/30034780

#SPJ11

Answer:

I can't see what this says

Step-by-step explanation:

The number of children and adult that were there are 117 aand 178 respectively.

Two hundred ninety-five people go to the public swimming pool on a hot summer day. The daily prices are 1.75 for children and 2.00 for adults. The recipients admission total of 560.75 dollars.

The number of children and adult can be calculated as follows;

Using equations,

let

x = number of children

y = number of adult

Therefore,

x + y = 295

1.75x + 2y = 560.75

multiply equation(i) by 2

2x + 2y = 590

1.75x + 2y = 560.75

subtract the equation

0.25 x = 29.25

x = 29.25 / 0.25

x = 117

Hence,

y = 295 - 117

y = 178

Therefore,

number of children = 117

number of adult = 178

learn more on equation here:https://brainly.com/question/30303812

#SPJ1