8. a factory makes silicon chips for use in computers. it is known that about 90% of the chips meet specifications. every hour a sample of 18 chips is selected at random for testing and the number of chips that meet specifications is recorded. what is the approximate mean and standard deviation of the number of chips meeting specifications? (a) u

We can start by converting the speed of the train from km/h to m/s:

63.36 km/h = 63.36 * 1000 m/3600 s = 17.6 m/s

We can use the formula:

distance = speed x time

to find the distance the train travels in 8 seconds. Since the person is walking in the same direction as the train, the relative speed between the train and the person is the difference between their speeds:

relative speed = train speed - person speed

The train covers the length of itself (152 meters) plus the distance traveled by the person in 8 seconds. We can set up the equation:

152 = (17.6 - person speed) x 8 + person speed x 8

152 = 140.8 - 8 person speed + 8 person speed

152 - 140.8 = 0.8 person speed

11.2 = 0.8 person speed

person speed = 11.2 / 0.8 = 14 m/s

Therefore, the person is walking at a speed of 14 m/s.

Answer:

its the 2nd and 3rd option

Step-by-step explanation:

The quadratic equation on the given graph is y = (x - 2)² - 9.

For a quadratic with leading coefficient a and vertex (h, k), the equation is:

y = a*(x - h)² + k

Here we can see that the vertex is at (2, -9), replacing that:

y = a*(x - 2)² - 9

We can see that the y-intercept is at y = -5, then:

-5 = a*(0 - 2)² - 9

-5 = a*4 - 9

-5 + 9 = a*4

4 = a*4

4/4 = a

1 = a

The quadratic is:

y = (x - 2)² - 9

Learn more about quadratic equations at:

https://brainly.com/question/1214333

#SPJ1

Answer:

21 hazardous state waste sites in State Y.

Step-by-step explanation:

x=2n-8

x=34

2n-8=34

2n=42

n=21

both countries can benefit from trade by specializing in the goods and services that they are relatively more efficient at producing and exchanging them with each other.

China is using the comparative advantage perspective in regards to not trading silk with Germany in exchange for automobiles. According to the theory of comparative advantage, a country should specialize in producing and exporting the goods or services that they can produce more efficiently or at a lower opportunity cost compared to other goods and services.

In this case, China has a comparative advantage in producing silk and a comparative disadvantage in producing automobiles compared to Germany, which has a comparative advantage in producing automobiles and a comparative disadvantage in producing silk.

Hence, both countries can benefit from trade by specializing in the goods and services that they are relatively more efficient at producing and exchanging them with each other.

To know more about Profit visit;

brainly.com/question/13934673

#SPJ4

Answer:

the value of M(2) would be 43

Step-by-step explanation:

M(2) mean y

y = 9t+25

= y=9(2) + 25

y = 18 + 25

y = 43

Answer:

Step-by-step explanation:

M(2) = 43; If Hazel mows 2 yards, she will earn $43.

Answer:

-7/3

Step-by-step explanation:

The formula for slope is [ y2-y1/x2-x1 ].

16-9/1-4

7/-3

-7/3

Best of Luck!

Answer:

Step-by-step explanation:

Given

Let us find f(x+5)

To find h(x)= f(x+5) - 2, we substitute for f(x+5)

Then, we have

The answer to the function h(x) is 3x²+30x+71

The minimum amount of fencing needed around the pool is equal to the perimeter of the pool.

The perimeter of the pool refers to the total length of all sides of the pool. By measuring each side and summing them up, we can calculate the perimeter. This measurement directly corresponds to the amount of fencing required to enclose the pool.

For example, if we have a rectangular pool with sides measuring 10 meters and 8 meters, we add up all the sides (10 + 8 + 10 + 8 = 36 meters) to find the perimeter. In this case, 36 meters of fencing would be needed to surround the pool completely.

Learn more about Fencing

brainly.com/question/14789853

#SPJ11

Answer:

y=19 z=19

Step-by-step explanation:

45 45 90 triangles are this: sides=hyp/sqrt(2)

mathXL lol

Answer:

610

Step-by-step explanation:

Given:

Add:

259 + 431 = 690

Subtract:

1300 - 690 = 610

So, on Wednesday 610 emails were sent out.

Hope this helped.

Answer:

(3,0)

Step-by-step explanation:

y= 2/3x - 2 ... (1)

y= -x+3 ... (2)

First, change the equations into normal equation form

(1): - 2/3x + y= - 2

(2): x+y= 3

(1)×3: - 2x+3y= - 6 ... (3)

(2)×2: 2x+2y= 6 ... (4)

(3)+(4): 5y=0

y= 0

Substitute y=0 into any equation

Let's say, equation (2)

y= -x+3

0= -x+3

-3= -x

x= 3

(x,y)= (3,0)

Answer:

A D C D F G

Step-by-step explanation:

hope this helps

Katie why whould you take down my answer and warn me like what did i do

Answer:

A graphing calculator is a handeled computer that is capable of plotting graphs, solving simultaneously equations, and performing other tasks with variables.

Hope these helps you jalissa.

Answer:

To write an equation in slope-intercept form, given a graph of that equation, pick two points on the line and use them to find the slope. This is the value of m in the equation. Next, find the coordinates of the y-intercept--this should be of the form (0, b). The y- coordinate is the value of b in the equation.

Answer:

The answer is D

Step-by-step explanation:

When doing this type of equation you would multiply the exponents and keep the base the same

Answer:

option D

Step-by-step explanation:

\((3d^4)^{2}\)

multiply the powers you will get,

\(3d^{8}\)

therefore, option D is the correct option

hope it helps you!!

B. For an additional year of age, price of the house will decrease by 500 dollars on average holding squared footage and pool constant. is the answer.

This equation helps to predict the value of the dependent variable based on the values of the independent variables.

This is because the coefficient of age of the house group is -0.5.

This means that for an additional year of age, the predicted price of the house will decrease by

0.5*1000 = 500 dollars on average,

holding squared footage and pool constant.

This is because the coefficient of age in the regression equation is negative, indicating that as the age of the house increases, the predicted price of the house decreases.

Thus, for an additional year of age, the price of the house will decrease by 500 dollars on average holding squared footage and pool constant.

For more questions related to dependent variable

https://brainly.com/question/25223322

#SPJ1

Answer:

NO

Step-by-step explanation:

Answer:

Actually it is. Think of it as a standard math. It is not at all hard. AP MAth is very hard because it's a ton of stuff and a whole bunch of maybe even college assignments. I would know because i  was one in honors but now in AP. Trust me when i ay that i fool around in clas and still get an A.

Step-by-step explanation:

To determine Emma's federal income tax (FIT) withholding, we need to consider her annual salary, pay frequency, filing status, and the standard withholding allowances.

Given that Emma earns an annual salary of $84,400 and is paid biweekly, we can calculate her gross biweekly salary by dividing the annual salary by the number of pay periods in a year. Assuming there are 26 pay periods in a year for biweekly payments:

Gross biweekly salary = Annual salary / Number of pay periods

                    = $84,400 / 26

                    = $3,246.15 (rounded to two decimal places)

Next, we need to determine Emma's withholding allowances based on her filing status. Since she selected "married filing jointly" and is using the standard withholding, the default number of allowances for this status is usually higher compared to single or married filing separately. However, the specific number of allowances can vary based on personal circumstances.

As of my knowledge cutoff in September 2021, the standard withholding allowances for married filing jointly were as follows:

First allowance: $4,300

Additional allowances: $4,400

Please note that tax laws can change, and it's advisable to consult the latest IRS guidelines or use an online tax calculator to get accurate withholding information.

To calculate Emma's FIT withholding, we'll subtract her allowances from her gross biweekly salary and apply the appropriate tax rates. For simplicity, let's assume Emma has one withholding allowance:

Total allowances = First allowance + Additional allowances

               = $4,300 + $4,400

               = $8,700

Taxable income = Gross biweekly salary - Total allowances

             = $3,246.15 - $8,700

             = -$5,453.85 (negative because allowances exceed the salary)

Since the taxable income is negative, Emma's FIT withholding should be $0. In this case, no federal income tax will be withheld from her biweekly paychecks. However, please note that Emma may still owe taxes when filing her annual tax return if her other sources of income or deductions are not accounted for in her withholding calculations.

The Chi-square test is a statistical test used to determine if there is a significant difference between observed and expected frequencies in categorical data. In this example, the test is used to assess whether there is a significant difference in the mean breaking strengths of two types of cables.

The Chi-square test of significance is employed when dealing with categorical or nominal data. It compares the observed frequencies with the frequencies that would be expected if the variables were independent. In this case, the breaking strengths of the two cables are the variables of interest.

To perform the test, the first step is to define the null hypothesis (H0) and the alternative hypothesis (Ha). In this example, H0 assumes that there is no difference in the mean breaking strengths of the two cables, while Ha suggests that there is a difference.

Next, the test statistic, denoted by X2 (chi-square), is calculated using the formula X2 = Σ[(O - E)²/E], where O represents the observed frequencies and E represents the expected frequencies under the assumption of independence.

To determine the expected frequencies, we need to estimate the means and variances of the breaking strengths. Here, x = 1925 and sigma = 40 for the first cable, and x = 1905 and sigma = 30 for the second cable.

Once the test statistic is calculated, it is compared to a critical value from the Chi-square distribution with degrees of freedom equal to (r - 1)(c - 1), where r is the number of rows and c is the number of columns in the contingency table. The significance level of 0.01 determines the critical value.

If the calculated X2 value is greater than the critical value, we reject the null hypothesis and conclude that there is sufficient evidence to indicate a difference in the mean breaking strengths of the two cables. Conversely, if the calculated X2 value is less than or equal to the critical value, we fail to reject the null hypothesis and conclude that there is no significant difference.

To learn more about chi-square click here: brainly.com/question/32379532

#SPJ11

A, B) y=4/5x +11/5

C) x=6

6) Since we have those two points, we can find out the slope between them using the slope formula:

A) In the point-slope form, we can write out the following formula and then plug into that the coordinates the slope found above considering point (-4,-1):

B) The same line described by the slope-intercept formula:

C) Plugging into the function the y-coordinate: 7

The x-coordinate for y=7 is x= 6.

That's the function y=4/5x +11/5

Answer:

I think the answer is 734.

Step-by-step explanation:

You do $178 x 4 months = 716

716 x 4 years is 734

Answer:

y = 5

Step-by-step explanation:

The standard form of a linear equation is Ax + By=C

But let's start with the slope-intercept form:  y = mx+b, where m is the slope and b the y-intercept (the value of y when x=0).

M, the slope, may be calculated by using the Rise/Run between the two given points:  (1,5) and (3,5):

Rise = (5-5) = 0  [Note that the value of y does not change when x = 1 or 3.]

Run is = (3-1)=2

Rise/Run (slope, m) is (0/2) or 0.  [y does not change as a function of x.  It is a flat, horizontal line]

The equation becomes y = (2/3)x + b

We need to find a value of b, the y-intercept, that forces the line to go through both points.  This can be done by entering one of the points into the equation and solving for b:

y = (0)x + b

I'll use (1,5)

5 = (0)*(1) + b

b = 5

The equation becomes y = (0)x + 5  or y = 5

Standard form of the equation is Ax + By = C

A is 0, B is 1 and C is 5

y = 5

Answer:

b. 75°

Step-by-step explanation:

By exterior angle theorem:

3x = x + 70°

3x - x = 70°

2x = 70°

x = 70°/x

x = 35°

Therefore, 3x = 3*35° = 105°

\( \measuredangle ACB= 180\degree - 105\degree \)

(Linear pair angles)

\( \measuredangle ACB= 75\degree \)

Okay, let's evaluate the statements:

A. This is correct. Both logarithmic and exponential functions represent non-linear change.

B. This is incorrect. The logarithmic function can have negative x-values and the exponential function can have negative y-values.

C. This is correct. The base of the logarithm (which is -1 here) and the base of the exponential (which is e here, approximately 2.718) are positive.

D. This is incorrect. The logarithmic function can produce negative or positive output depending on the input x. The exponential function can also produce negative or positive output depending on the input.

So the correct statements are:

A. Both the logarithmic function and the exponential function represent change that is not linear.

C. The base of the logarithmic function and the base of the exponential function are both positive.

In summary, I would choose options A and C.

Let me know if you have any other questions!

The waterfall model has equivalent flexibility to other approaches. suitable for conventional project management tools and methods.

The waterfall model of the software development life cycle is the greatest technique for creating systems.

This includes the following elements:

1. The requirements phase, which takes into account the needs needed to build the product

2. The product's design is created

3. The programmers who wrote the code to put the product into action built the product.

4. The product is examined and all flaws are fixed to ensure that it responds correctly to inputs.

5. The systems are periodically maintained to ensure continued operation and proper output

To know more about the waterfall model, refer to this link:

https://brainly.com/question/13439438

#SPJ4

Answer:

Yes

Step-by-step explanation:

You would first need to make the fraction a decimal which would be 0.5