I need help with number 4 pls

Answer:

I'm not sure but I guess I will go with A.

Step-by-step explanation:

Answer:

-4.0

Step-by-step explanation:

I took the quiz

C. Not Correlated. The age of a textbook and how well it is written are not inherently linked or related.

The age of a textbook does not necessarily determine how well it is written, and vice versa. Therefore, there is no apparent correlation between the two variables.

Correlation between two variables, we are looking for a relationship or connection between them. Specifically, we want to see if changes in one variable are related to changes in the other variable.

In the case of the age of a textbook and how well it is written, there is no inherent connection between the two. The age of a textbook refers to how old it is, which is a measure of time. On the other hand, how well a textbook is written is a subjective measure of its quality or effectiveness in conveying information.

Just because a textbook is older does not necessarily mean it is poorly written or vice versa. Likewise, a newer textbook is not automatically better written. The quality of writing in a textbook is influenced by various factors such as the author's expertise, writing style, and editorial process, which are independent of its age.

Therefore, we can conclude that the age of a textbook and how well it is written are not correlated. There is no clear relationship between the two variables, and changes in one variable do not consistently correspond to changes in the other variable.

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To solve for C let us do these steps

1. Put the term of C on one side and the other terms on the other side

Subtract 32 from both sides to move the term 32 to the other side

2. Make the coefficient of C = 1

Divide both sides by 9/5

You can Multiply the bracket (F- 32) by 5/9

Answer:

44.6 mph

Step-by-step explanation:

200.7/4.5=44.6 mph

Answer:

Joe earned $700 in interest in 5 years

Step-by-step explanation:

To calculate the interest earned by Joe in 5 years at a rate of 7% per year, we can use the simple interest formula:

Interest = Principal x Rate x Time

Where:

Principal is the initial amount deposited, which is $2,000 in this case

Rate is the interest rate per year, which is 7%

Time is the number of years, which is 5 years in this case

Plugging in the values, we get:

Interest = $2,000 x 0.07 x 5

Interest = $700

Therefore, Joe earned $700 in interest in 5 years.

ANSWER :          -7x + 14

EXPLANATION, to reverse division multiply

Answer:

B

Step-by-step explanation:

x=2/3

6(2/3) + 4 9/10 =4 + 4 9/10 = 8 9/10

Answer:

2x-1=y,2y+3=x

Step-by-step explanation:

no explanation

Answer:

\(domain = {{ -2, - 9,7, - 3}}\)

\(range = { {- 2,0,- 9,2}}\)

Step-by-step explanation:

Greetings!!!

Consider the relation {(0,7),(0,8),(1,7),(1,8),(1,9),(2,10)} .

Here, the relation is given as a set of ordered pairs.

If you have any questions tag it on comments

Hope it helps!!!

Answer:

Look to explanation

Step-by-step explanation:

The question says the original mosaic  is surrounded by a 3 inch by 5 inch frame.  The length has 5 squares & the width has 3 squares, so that means each square is an inch long.

1.  Perimeter is adding up how long all the sides are.  So for the original you add 3 + 5 + 3 + 5 = 16 inches

2.  Area is length x width, so we multiply 3 x 5 = 15 inches squared

3.  Since each square is an inch, to find the length we add up all the squares & we get 10.  Then we do the same for the width & get 6.  To figure perimeter, we add up all the sides  10 + 6 + 10 + 6 = 32 inches

4.  Area is length x width, so 10 x 6 = 60 inches squared

5.  For the original we needed 16 inches of steel.  For the larger one, we needed 32 inches.  32 inches is 2x bigger than 16.

6.  For the original we had an area of 15 inches squared.  For the larger one we had 60 inches squared.  60 is 4x bigger than 15.

The mountain with the steepest slope would be Mountain H, described by the function y = -** + 5.

To determine which mountain has the steepest slope, we need to look at the coefficient of the quadratic term in the function describing each mountain. The higher the coefficient, the steeper the slope.

Among the given options, Mountain H is described by the function y = -** + 5. Since the coefficient of the quadratic term is negative, the parabolic shape opens downwards, indicating a steep slope. Comparing it to the other options where the coefficient is not negative, Mountain H has the steepest slope.

Moving on to the next question:

Approximately 9 out of 100 people are left-handed. To calculate the number of left-handed individuals in a population of 1740 people, we can multiply the percentage by the total population:

Number of left-handed individuals = 9/100 * 1740 = 156.6

Rounding to the nearest whole number, we find that approximately 157 people are likely to be left-handed in a population of 1740 individuals.

As for the third question, it seems that the given system of equations is missing, so it is not possible to determine the x-value for the solution.

Finally, in question 37, the inequality 21 - 5 < -17 can be simplified to 16 < -17, which is not true. Therefore, none of the given answer choices represents the solutions to the inequality.

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1)

From the information given,

x represents the day number

y represents the number of people who know about the opening on day x

On the first day, x = 0, y = 1

On the second day, x = 1, y = 3

On the third day, x = 2, y = 9

The rate at which the number of people is increasing is exponential. The general form of an exponential equation is

y = ab^x

We would find a and b by substituting corresponding values of x and y into the equation. We have

For x = 0 and y = 3,

3 = ab^0

a = 3

For x = 1 and y = 3,

3 = ab^1

By substituting a = 3,

3 = 3b

b = 3/3 = 1

The equation is

The product of a rational and an irrational number can be either rational or irrational, depending on the specific numbers involved.

To illustrate this, let's consider an example:

Let's say we have the rational number 2/3 and the irrational number √2.

Their product would be (2/3) * √2.

In this case, the product is irrational.

The square root of 2 is an irrational number, and when multiplied by a rational number, the result remains irrational.

However, it's also possible to have a product of a rational and an irrational number that is rational. For example, if we consider the rational number 1/2 and the irrational number √4, their product would be (1/2) * 2, which equals 1. In this case, the product is a rational number.

Therefore, we cannot make a definitive statement that the product of a rational and an irrational number is always rational or always irrational. It depends on the specific numbers involved in the multiplication.

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a. Null hypothesis: H₀: µ ≤ 74

b. A t-test is appropriate here because the population standard deviation is not known, and the sample size is less than 30.

c. The value of Test statistic is -6.325

d. At a 0.05 significance level, the critical value for a right-tailed test is  -1.664.

e. The test statistic (-4.38) is less than the critical value (1.645). Hence we can reject the null hypothesis.

a. Null hypothesis, H0: µ = 74, alternative hypothesis, H1: µ > 74  (there is no significant difference in the mean job satisfaction scores of employees after the telecommuting policy is adopted).

b. A t-test is appropriate here because the population standard deviation is not known, and the sample size is less than 30. This is a one-tailed test because the alternative hypothesis is directional (i.e., it states that the mean level of satisfaction will increase with telecommuting).

c. The test statistic is calculated using the formula: t = (X - µ) / (s / √n), where X is the sample mean, µ is the population mean, s is the sample standard deviation, and n is the sample size.  Substituting the values given in the question: t = (56 - 74) / (8 / √80) = -6.325

d. The critical value for a one-tailed t-test with 79 degrees of freedom at the 0.05 level of significance is -1.664. Since the calculated t-value of -6.325 is less than the critical value of -1.664, we reject the null hypothesis.

e. Based on the calculated t-value and critical value, we reject the null hypothesis that the mean level of satisfaction is the same before and after telecommuting and accept the alternative hypothesis that telecommuting increases the mean level of satisfaction among employees.

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Answer:

i belive its A

Step-by-step explanation:

y= 7 x or 21=7x3

y = 21 x=3

21 = 7x3

7x3=21

Answer:

B

Step-by-step explanation:

We're looking for a number (x) that's less than 44

We can represent it by simply using the less sign, so x < 44

Answer:

65.09

Step-by-step explanation:

61×6.7%＝4.087

4.087+61＝65.087

65.087≈65.09

Answer:

0.167 cents is needed for one peach

Answer:

a) \((3x)^{15} + 15(3x)^{14}(\frac{2}{x}) + 105(3x)^{13}(\frac{2}{x})^2 + ... + 15(3x)(\frac{2}{x})^{14} + (\frac{2}{x})^{15}\)

b) \((2x)^{20} + 20(2x)^{19}(-\frac{3}{x}) + 190(2x)^{18}(-\frac{3}{x})^2 + ... + 20(2x)(-\frac{3}{x})^{19} + (-\frac{3}{x})^{20}\)

Step-by-step explanation:

The binomial expansion formula is:
\((a + b)^n = a^n + \binom{n}{1}a^{n-1} b + \binom{n}{2}a^{n-2}b^2 + ... + \binom{n}{r}a^{n-r}b^{r} + ... + b^n\)
The (n r) in front of each term is the binomial coefficient. This can be calculated on a calculator using the nCr button (in this case, you'd put 15C1 for (n 1), 15C2 for (n 2), etc). This can be calculated without a calculator using this formula:
\(\binom{n}{r} = \frac{{n!}}{{r!\left( {n - r} \right)!}}\)

In a), a = 3x, b = 2/x and n = 15.

You can plug these into the formula above to get:
\((3x)^{15} + 15(3x)^{14}(\frac{2}{x}) + 105(3x)^{13}(\frac{2}{x})^2 + ... + 15(3x)(\frac{2}{x})^{14} + (\frac{2}{x})^{15}\)

Here's how to do this without the formula:

You could 'simplify' this by expanding the brackets, but this gives you massive numbers so it's probably best to leave it like this.

Applying this to b):

a = 2x, b = -3/x, n = 20

\((2x)^{20} + 20(2x)^{19}(-\frac{3}{x}) + 190(2x)^{18}(-\frac{3}{x})^2 + ... + 20(2x)(-\frac{3}{x})^{19} + (-\frac{3}{x})^{20}\)

Answer:

Step-by-step explanation.

Using Newton's method with an initial guess of xo, we can approximate the solution of the equation x = 2 + sin(x) to be approximately 1.954.

To find an approximation to the solution of the equation x = 2 + sin(x), we will apply Newton's method. First, we need to calculate the derivative of the function f(x) = x - 2 - sin(x), which is f'(x) = 1 - cos(x). With an initial guess of xo, we can use the formula xn+1 = xn - f(xn)/f'(xn) to iterate and refine our approximation.

In this case, let's assume xo = 1. Using this initial guess, we can calculate f(x0) = 1 - 2 - sin(1) = -0.1585 and f'(x0) = 1 - cos(1) = 0.4597. Plugging these values into the Newton's method formula, we get x1 = x0 - f(x0)/f'(x0) = 1 - (-0.1585)/0.4597 ≈ 1.954.

Therefore, by applying Newton's method once with an initial guess of xo = 1, we approximate the solution to be x ≈ 1.954.

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There are 384 ways to arrange these given letters as per the given situation.

A permutation is an orderly arrangement of things or numbers. Combinations are a means to choose items or numbers from a collection or set of items without worrying about the items' chronological order.

Given, different ways can the 8 letters a, b, c, d, e, f, g, and h be arranged if the letters a and b must be next to one another, the letters c and d must be next to one another, the letters e and f must be next to one another, and the letters g and h must be next to one another.

In this question, we have 2 ways where A and B (AB, BA) are next to each other and 2 ways where C and D (CD, DC) are next to each other.  2 ways where g and h (gh, hg) are next to each other and 2 ways where e and f (ef, fe) are next to each other.

The total number of arrangements is = 4! * 2 * 2 *2*2

The total number of arrangements is = 24 * 16

The total number of arrangements is = 384

Therefore, the Different ways to arrange these letters are 384.

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The probability that student chosen at random is 16 years is 0.28.

The table shows the distribution of student by age in a high school with 1500 students. Therefore, the probability that randomly chosen student is  16 years can be found as follows:

Therefore,

probability = number of favourable outcome to age / total number of possible outcome

Hence,

probability that student chosen at random is 16 years =  420 / 150

probability that student chosen at random is 16 years = 0.28

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Answer:

Step-by-step explanation:

Using six random samples, the average number of catfish in the samples was 5.7

Answer:

Uhhhh......Hi??

Answer:

4.

Step-by-step explanation:

8*1 / 1*2

= 8/2

= 4.

\(8\times \dfrac 12 = 4\)

The travel time x is 41.162 min such that 17.36% of the 60 days have a travel time that is at least x.

We have to determine the travel time such that 17.36% of the 60 days have a travel time that is at least.

Total work days to work = 60 days

The travel mean time = 35.6

Standard deviation = 10.3

For normal distribution,

P(X < A) = P(Z < (A - mean)/standard deviation)

P(X > x) = 0.2946

P(X < x) = 1 - 0.2946 = 0.7054

P(Z < (x - 35.6)/10.3) = 0.7054

Take the z value that corresponds to 0.7054 in the table of the standard normal distribution.

(x - 35.6)/10.3 = 0.54

x = 41.162 min

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