The vertical test line

Answers

Answer 1

Step-by-step explanation:

The vertical line test is a graphical method of determining whether a curve in the plane represents the graph of a function by visually examining the number of intersections of the curve with vertical lines. and, as a result, any vertical line in the plane can intersect the graph of a function at most once.

hope it helpsstay safe healthy and happy....
Answer 2

Answer:

It is a graphical method


Related Questions

The angle of elevation of the top of the tower from a point on the ground is 30 degree, If the height of the tower is 40 space m e t e r s, then the distance between the tower and the point is​

Answers

Answer:

[tex]40\sqrt3\ m[/tex]

Step-by-step explanation:

Given that,

The height of the tower, h = 40 m

The angle of elevation is 30°

We need to find the distance between the tower and the point. Let the distance is x. Using trigonometry,

[tex]\tan(30)=\dfrac{h}{x}\\\\\dfrac{1}{\sqrt3}=\dfrac{40}{x}\\\\x=40\sqrt3\ m[/tex]

So, the distance between the tower and the point is equal to [tex]40\sqrt3\ m[/tex].

please help please help​

Answers

Answer:

1. number line or 3

2. D

3. E and K

4. B

5. A

Brainliest please~

g At a certain gas station, 30% of all customers use the restroom. What is the probability that, out of the next 10 customers, (a) exactly 4 will use the restroom

Answers

Answer:

[tex]P(x=4) = 0.200[/tex]

Step-by-step explanation:

Given

[tex]n=10[/tex] --- selected customers

[tex]x = 4[/tex] --- those that are expected to use the restroom

[tex]p =30\% = 0.30[/tex] --- proportion that uses the restroom

Required

[tex]P(x = 4)[/tex]

The question illustrates binomial probability and the formula is:

[tex]P(x) = ^nC_x * p^x * (1 - p)^{n - x}[/tex]

So, we have:

[tex]P(x=4) = ^{10}C_4 * (0.30)^4 * (1 - 0.30)^{10 - 4}[/tex]

[tex]P(x=4) = ^{10}C_4 * (0.30)^4 * (0.70)^6[/tex]

[tex]P(x=4) = 210* (0.30)^4 * (0.70)^6[/tex]

[tex]P(x=4) = 0.200[/tex]

12.03 MC)
rectangle ABCD was reflected over the y-axis, reflected over the x-axis, and rotated 180°, where would point A' lie?
Hint: Place your coordinates in the blank with no parentheses and a space after the comma in the form: x, y]

Answers

9514 1404 393

Answer:

  (1, -1)

Step-by-step explanation:

The three transformations are ...

  (x, y) ⇒ (-x, y) . . . . . reflection over the y-axis

  (x, y) ⇒ (x, -y) . . . . . reflection over the x-axis

  (x, y) ⇒ (-x, -y) . . . . . rotation 180°

Then the composition of the three transformations is ...

  (x, y) ⇒ (x, y) . . . . . . back to the original position

  A(1, -1) ⇒ A'(1, -1)

Answer:

(1, -1)

Step-by-step explanation:

hope it helps much

Robert paid $4.5 for 3 apples. Find the cost per apple.

Answers

Answer:

$1.50

Step-by-step explanation:

so its

4.5 ÷ 3

which

1.5

if a x + B Y is equal to a square minus b square and b x + A Y is equal to zero find the value of x + Y

Answers

9514 1404 393

Answer:

  a-b

Step-by-step explanation:

Add the two equations together:

  (ax +by) +(bx +ay) = (a² -b²) +(0)

  x(a +b) +y(a +b) = (a +b)(a -b)

  x + y = a - b . . . . . divide by (a+b), assuming a+b ≠ 0

The mean of a data set is observed to be very different from its median, representing a strong skewness. However, the 1.5 IQR rule reveals that there are no outliers. Which of the following is correct, if the sample size is 100?

a. A normal quantile plot of the data follows a diagonal line, and the t-procedure is appropriate to use.
b. A normal quantile plot of the data does not follow a diagonal line, and the t- procedure is not appropriate to use.
c. A normal quantile plot of the data follows a diagonal line, and the t-procedure is not appropriate to use.
d. A normal quantile plot of the data does not follow a diagonal line, and the t- procedure is appropriate to use.

Answers

Answer:

a. A normal quantile plot of the data follows a diagonal line, and the t-procedure is appropriate to use.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]

In this question:

Sample size of 100 > 30, which means that we use the Central Limit Theorem, and thus, the sampling distribution is approximately normal, following a diagonal line, and since the standard deviation of the population is not know, we use the t-procedure. Thus, the correct answer is given by option a.

The total number of labor hours for a construction project by week x is given by: Week 1 4 7 10 13 16 19 Total hours 25 158 1254 5633 9280 10,010 10,100 Look at its scatter plot, an appropriate model for this data is:

Answers

Answer:

Logistic model

Step-by-step explanation:

A scatter plot is a mathematical representation or diagram which is used to shoe the relation between two given variables. It uses the Cartesian coordinates which is used to display the values for a typically two variables for the given set of data.

In the context, a scatter plot is made between two variables. The two variables are the total number of hours and the number of weeks.

From the graph shown, we can say that model is a logistic model as the shape of the graph is S shaped.

Therefore, the appropriate model for the data given is logistic model.

There are 100 sheets of paper on table. It takes 10 seconds to count 10 sheets. How many seconds will you need to count 80 sheets?

Answers

Answer:

80 seconds

Step-by-step explanation:

10/10 = 1

now it takes 1 seconds to count 1 sheet

80 x 1 = 80 seconds to count 80 sheets

Step-by-step explanation:

10sheets=10seconds

1sheet=1sheet÷10sheets x 10seconds

=1second

80sheets=80sheets÷1sheet x 1second

80seconds

hope this is helpful

: Find absolute minimum and maximum values of (, ) = 2
2 +
4 + 4
On the close triangular region R bounded by the lines = −2, = 0, = 2

Answers

f(x , y) = x + y - xy, D is the closed triangular region with vertices (0, 0), (0 , 2) , and (4 , 0)

if cars A and B are traveling at the speed of 55km/hr and 75km/hr respectively. What is their average speed?​

Answers

Answer:

65 km/hr

Step-by-step explanation:

The average of numbers can be calculated by adding them up and dividing that by how many numbers there are.

Here, we have two numbers. Therefore, we first add them (55+75 = 130) and then divide by 2 because there are 2 numbers, so 130/2 = 65

the difference when a number doubled is subtracted from 3​

Answers

Answer: Let the number be x

3-2x is the equation.

Newborn babies: A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights of 732 babies born in New York. The mean weight was 3311 grams with a standard deviation of 860 grams. Assume that birth weight data are approximately bell-shaped. Part 1 of 3 (a) Estimate the number of newborns whose weight was less than 4171 grams. Approximately of the 732 newborns weighed less than 4171 grams. Part 2 of 3 (b) Estimate the number of newborns whose weight was greater than 1591 grams. Approximately of the 732 newborns weighed more than 1591 grams. Part 3 of 3 (c) Estimate the number of newborns whose weight was between 3311 and 5031 grams. Approximately of the 732 newborns weighed between 3311 and 5031 grams.

Answers

Answer:

a) 615

b) 715

c) 344

Step-by-step explanation:

According to the Question,

Given that,  A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights of 732 babies born in New York. The mean weight was 3311 grams with a standard deviation of 860 grams

Since the distribution is approximately bell-shaped, we can use the normal distribution and calculate the Z scores for each scenario.

Z = (x - mean)/standard deviation

Now,

For x = 4171,  Z = (4171 - 3311)/860 = 1  

P(Z < 1) using Z table for areas for the standard normal distribution, you will get 0.8413.

Next, multiply that by the sample size of 732.

Therefore 732(0.8413) = 615.8316, so approximately 615 will weigh less than 4171  

 

For part b, use the same method except x is now 1591.    

Z = (1581 - 3311)/860 = -2    

P(Z > -2) , using the Z table is 1 - 0.0228 = 0.9772 . Now 732(0.9772) = 715.3104, so approximately 715 will weigh more than 1591.

 

For part c, we now need to get two Z scores, one for 3311 and another for 5031.

Z1 = (3311 - 3311)/860 = 0

Z2 = (5031 - 3311)/860= 2  

P(0 ≤ Z ≤ 2) = 0.9772 - 0.5000 = 0.4772

  approximately 47% fall between 0 and 1 standard deviation, so take 0.47 times 732 ⇒ 732×0.47 = 344.

Help pls ty!
Adios!
Bye

Answers

wouldnt angle rsq be 90 degrees

Pierre Martina is comparing the cost of credit to the cash price of an item. If Pierre makes a down payment of $70 and pays $34 a
month for 24 months, how much more will that amount be than the cash price of $695? (Input the amount as a positive value.)
Amount of difference

Answers

Answer:

$191

Step-by-step explanation:

Find how much she will be paying over the 24 months:

34(24)

= 816

Add the down payment to this:

816 + 70

= 886

Find the difference between this and 695:

886 - 695

= 191

So, the difference will be $191 more

Please help me with solving these. I’d really appreciate your help. Thank you very much.

Answers

Answer:

Problem 17)

[tex]\displaystyle y=-\frac{5}{2}x+\frac{7}{2}[/tex]

Problem 18)

[tex]\displaystyle y=\frac{3}{2}x-\frac{3}{2}+\frac{\pi}{4}[/tex]

Step-by-step explanation:

Problem 17)

We have the curve represented by the equation:

[tex]\displaystyle 4x^2+2xy+y^2=7[/tex]

And we want to find the equation of the tangent line to the point (1, 1).

First, let's find the derivative dy/dx. Take the derivative of both sides with respect to x:

[tex]\displaystyle \frac{d}{dx}\left[4x^2+2xy+y^2\right]=\frac{d}{dx}[7][/tex]

Simplify. Recall that the derivative of a constant is zero.

[tex]\displaystyle \frac{d}{dx}[4x^2]+\frac{d}{dx}[2xy]+\frac{d}{dx}[y^2]=0[/tex]

Differentiate. We can differentiate the first term normally. The second term will require the product rule. Hence:

[tex]\displaystyle 8x+\left(2y+2x\frac{dy}{dx}\right)+2y\frac{dy}{dx}=0[/tex]

Rewrite:

[tex]\displaystyle \frac{dy}{dx}\left(2x+2y\right)=-8x-2y[/tex]

Therefore:

[tex]\displaystyle \frac{dy}{dx}=\frac{-8x-2y}{2x+2y}=-\frac{4x+y}{x+y}[/tex]

So, the slope of the tangent line at the point (1, 1) is:

[tex]\displaystyle \frac{dy}{dx}\Big|_{(1, 1)}=-\frac{4(1)+(1)}{(1)+(1)}=-\frac{5}{2}[/tex]

And since we know that it passes through the point (1, 1), by the point-slope form:

[tex]\displaystyle y-1=-\frac{5}{2}(x-1)[/tex]

If desired, we can simplify this into slope-intercept form. Therefore, our equation is:

[tex]\displaystyle y=-\frac{5}{2}x+\frac{7}{2}[/tex]

Problem 18)

We have the equation:

[tex]\displaystyle y=\tan^{-1}\left(x^3\right)[/tex]

And we want to find the equation of the tangent line to the graph at the point (1, π/4).

Take the derivative of both sides with respect to x:

[tex]\displaystyle \frac{dy}{dx}=\frac{d}{dx}\left[\tan^{-1}(x^3)][/tex]

We can use the chain rule:

[tex]\displaystyle \frac{d}{dx}[u(v(x))]=u'(v(x))\cdot v(x)[/tex]

Let u(x) = tan⁻¹(x) and let v(x) = . Thus:

(Recall that d/dx [arctan(x)] = 1 / (1 + x²).)

[tex]\displaystyle \frac{d}{dx}\left[\tan^{-1}(x^3)\right]=\frac{1}{1+v^2(x)}\cdot 3x^2[/tex]

Substitute and simplify. Hence:

[tex]\displaystyle \frac{d}{dx}\left[\tan^{-1}(x^3)\right]=\frac{1}{1+v^2(x)}\cdot 3x^2=\frac{3x^2}{1+x^6}[/tex]

Then the slope of the tangent line at the point (1, π/4) is:

[tex]\displaystyle \frac{dy}{dx}\Big|_{x=1}=\frac{3(1)^2}{1+(1)^6}=\frac{3}{2}[/tex]

Then by the point-slope form:

[tex]\displaystyle y-\frac{\pi}{4}=\frac{3}{2}(x-1)[/tex]

Or in slope-intercept form:

[tex]\displaystyle y=\frac{3}{2}x-\frac{3}{2}+\frac{\pi}{4}[/tex]

Verify the sine law by taking particular triangle in four quadrant.​

Answers

Answer:

answer is in the picture above

A candy company fills a package of candy with individually wrapped pieces of candy. The number of pieces of candy per package varies because the package is sold by weight. The company wants to estimate the number of pieces per package. Inspectors randomly sample 120 packages of this candy and count the number of pieces in each package. They find that the sample mean number of pieces is 18.72. Assume the population standard deviation of .8735. What is the point estimate of number of pieces per package

Answers

Answer:

The point estimate for the number of pieces per package is of 18.72.

Step-by-step explanation:

Point estimate of a population mean:

The mean of the sample gives an estimate for the population mean.

They find that the sample mean number of pieces is 18.72.

This means that the point estimate for the number of pieces per package is of 18.72.

what is the simplified form of the following expression 3 sqrt 4x/5

Answers

Answer:

Kindly check the attached picture

Step-by-step explanation:

The solution to the problem has been explicitly solved in the picture attached below :

We need to find a number that makes the denominator a perfect cube in other to simplify the expression which is 25/25.

Kindly check the attached picture for detailed explanation

help on part 3? not sure what i’m supposed to do

Answers

The x-intercepts are the points on the plot of a function f(x) where the graph crosses the x-axis. In other words, they're the values of x that make f(x) = 0.

In this case, the x-intercepts are the two roots of the parabola,

(x - 4) (x - 5) = 0 … … … (this is what the hint is referring to)

==>   x - 4 = 0   or   x - 5 = 0

==>   x = 4   or   x = 5

The intercepts themselves are points (x, f(x)), so you can report them as (4, 0) and (5, 0).

on a piece of paper, graph y=x^2+x-6 and identify the y-intercept. Then determine which answer choice matches the graph and y-intercept that you drew.

Answers

Answer:

c

Step-by-step explanation:

C is the correct answer

Tim and Al are bricklayers. Tim can construct an outdoor grill in 5 days. If Al helps Tim, they can build it in only 3 days. How long
would it take Al to build the grill alone? Write your answer as an integer, simplified fraction, or mixed number.
It would take Al
days to build the grill alone.

Answers

Answer:

It would take Al 7.5 days to build the grill alone.

Step-by-step explanation:

Since Tim and Al are bricklayers, and Tim can construct an outdoor grill in 5 days, and if Al helps Tim, they can build it in only 3 days, to determine how long would it take Al to build the grill alone should be done the following calculation:

1/5 + X = 1/3

0.20 + X = 0.333

X = 0.333 - 0.20

X = 0.1333333

X = 1 / 7.5

Therefore it would take Al 7.5 days to build the grill alone.

Find the slope of the line that passes through the two points. -3,6 & -7,3


HELP!!!!

Answers

slope is 3/4!
solve using
y - y1/x-x1
:)

Given: f(x) = x- 7 and h(x) = 2x + 3
Write the rule for f(h(xc)).

Answers

Answer:

[tex]f(h(xc)) = 2xc-4[/tex]

Step-by-step explanation:

Given

[tex]f(x) = x - 7[/tex]

[tex]h(x) = 2x + 3[/tex]

Required

[tex]f(h(xc))[/tex]

First, calculate h(xc)

If [tex]h(x) = 2x + 3[/tex]

Then

[tex]h(xc) = 2xc + 3[/tex]

Solving further:

[tex]f(x) = x - 7[/tex]

Substitute h(xc) for x

[tex]f(h(xc)) = h(xc) - 7[/tex]

Substitute [tex]h(xc) = 2xc + 3[/tex]

[tex]f(h(xc)) = 2xc + 3 - 7[/tex]

[tex]f(h(xc)) = 2xc-4[/tex]

Which choice is equivalent to(√6)( √8). How do you solve
A. 4√6
B. 4√3
C. 16√3
D. 3√16

Answers

Answer:

B

Step-by-step explanation:

(6)^1/2 × (8)^1/2

6^1/2 × 2 (2)^1/2

4 (3)^1/2

How many additional teachers will have to be hired to reduce the ratio to 1:20

Answers

Answer:

30 additional teachers will have to be hired to reduce the ratio to 1:20.

Step-by-step explanation:

Given that Jefferson School has 1800 students, and the teacher-pupil ratio is 1:30, to determine how many additional teachers will have to be hired to reduce the ratio to 1:20, the following calculation must be performed:

30 = 1800

1 = X

1800/30 = X

60 = X

20 = 1800

1 = X

1800/20 = X

90 = X

90 - 60 = 30

Therefore, 30 additional teachers will have to be hired to reduce the ratio to 1:20.

3x7 I need help with this i do not know the answer pls help.

Answers

Answer:

21

Step-by-step explanation:

7+7+7=21

The area of a rectangle is 110 square units. Its length measures 11 units. Find the
length of its diagonal. Round to the nearest tenth of a unit.

Answers

Answer:

A

=

w

l

d

=

w

2

+

l

2

Solving for

d

d

=

l

2

+

(

A

l

)

2

=

11

2

+

(

110

11

)

2

14.86607

The length of the diagonal of the rectangle is 14.9 units.

What is a diagonal?

A diagonal is the longest line that divides a plane shape into two halves.

To calculate the diagonal of the rectangle, we use Pythagoras theorem.

Formula:

A = lw.............. Equation 1

Where:

A = Area of the rectanglel = Length of the rectanglew = width of the rectangle.

make w the subject of the equation

w = A/l.............. Equation 2

From the question,

Given:

A = 110 square unitsl = 11 units

Substitute these values into equation 2

w = 110/11w = 10 units.

Finally, to calculate the diagonal of the rectangle, we use the formula below

d² = l²+w²............. Equation 3

Given:

w = 10 unitsl = 11 units.

Substitute these values into equation 3

d² = 10²+11²d² = 100+121d² = 221d  = √221d = 14.9 units.

Hence, the length of the diagonal of the rectangle is 14.9 units.

Learn more about diagonal here: https://brainly.com/question/654982

#SPJ2

HELP ASAP?

the two answers not showing on screen are



C:y<6x-3
D:y<6-3

Answers

Answer:

A is that answer

A) y<2x-3

A box is 2,5 dm long and 5 dm high its volume is 62.5 dm3 how wide it is?​

Answers

Answer:

7.5 dm

Step-by-step explanation:

Plus mo baka tama ako

Other Questions
help me please!!!!!!!! Deviance often leads to social change. What may be seen as disruptive, problematic behavior at one moment, might later be recognized as a brave statement against injustice. The idea that small groups of people can reshaped societal norms and values is exemplified by the __________ . The perimeter of a square is 80cm state the length of one of its side population education is also called asSubject for population awarness. Why? Which of the following statements should be included in a summary of the subsection Saving the Bees?Your answer:a.Use organic products to treat plants at night.b.Both lawmakers and regular people have important roles in helping to save the bees.c.France is the most bee friendly country in the nation.d.Planting trees is better than planting flowers all year long. The following adjusted trial balance is the result of the adjustments made at the end of the month of July for Ladonna Douglas Corporation.Ladonna Douglas CorporationADJUSTED TRIAL BALANCEJuly 31, 20--ACCOUNT TITLE DEBIT CREDITCash 34,750.00 Accounts Receivable 9,750.00 Office Supplies 2,525.00 Store Supplies 4,785.00 Machinery 10,750.00 Accumulated Depreciation 2,150.00Accounts Payable 14,300.00Notes Payable 11,500.00Common Stock 33,725.00Retained Earnings 20,000.00Dividends 13,250.00 Service Revenue 41,500.00Wages Expense 37,425.00 Rent Expense 3,000.00 Advertising Expense 2,750.00 Office Supplies Expense 1,465.00 Store Supplies Expense 2,150.00 Depreciation Expense 575.00 Totals 123,175.00 123,175.00Required:Utilize these adjusted values to perform the closing entries for Ladonna Douglas Corporation. Simplify by expressing fractional exponents instead of radicals. Which statement is the best description of a chemical bond Determine the dimensions of the rectangle of largest area that can be inscribed in a semicircle of radius 4 Meaning of the idiom, "dressed up to the nines" Mandira is not patient at all. [Remove not] PH Find the expected value of the winnings from a game that has the following payout probability distribution: 1 2 Payout ($) 0 5 10 0.1 Probability 0.12 0.2 0.38 0.2 Expected Value = [?] Round to the nearest hundredth. Brian is making 5 triangular flags, each with the dimensions shown below.A triangle has a base of 18 inches and a height of 36 inches.How much fabric will Brian need to make the 5 flags? Consider the probability that no less than 37 out of 295 cell phone calls will be disconnected. Choose the best description of the area under the normal curve that would be used to approximate binomial probability.a. Area to the right of 36.5b. Area to the right of 37.5c. Area to the left of 36.5d. Area to the left of 37.5e. Area between 36.5 and 37.5 it is represented by a small rectangle with curved corners and appears at the start and the end of a flowchart By ____________________ Andy Kirk means, do the (viewers') need engage with this work, or is it entirely voluntary Suppose Cold Goose Metal Works Inc. is evaluating a proposed capital budgeting project (project Beta) that will require an initial investment of $3,000,000. The project is expected to generate the following net cash flows: Year Cash Flow Year 1 $350,000 Year 2 $450,000 Year 3 $450,000 Year 4 $450,000Cold Goose Metal Works Inc.'s weighted average cost of capital is 8%, and project Beta has the same risk as the firm's average project. Based on the cash flows, what is project Beta's NPV? Although freshwater biomes cover less than 1% of the Earth's surface, they are important because ________. Congestive heart failure (CHF) is an inability of the heart to pump sufficient blood to the body. One sign of CHF is excess fluid in the tissue spaces, known as edema. Describe the location of the edema if the left side of the heart fails, compared to the location of edema if the right side of the heart fails. Case Study:Gladys and Andrew are taking a psychology class together. During the ice-breaker activity on the firstday of class, Andrew shares with Gladys that he has a difficult time seeing, despite the fact that hewears glasses and that he is worried about missing out of important parts of the lecture notes. Gladysthen asks him if he would like a copy of her notes, Andrew gratefully accepts.Gladys has demonstrated civility which requires:0A productivity and intelligence,B empathyc ethics.D a high 19