Can someone help me ASAP !

The graphs that represent functions are Graph B and Graph D.The correct answer is option A.

A function is a mathematical relationship where each input value (x-coordinate) corresponds to exactly one output value (y-coordinate). In Graph B, the plotted points (negative 1, 1) and (1, 5) satisfy this condition, as each x-value has a unique y-value associated with it.

Similarly, Graph D represents a function because it has a rise and decline curve passing through the point (1, negative 2). This means that for any given x-value, there is only one corresponding y-value.

On the other hand, Graph A does not represent a function because it shows multiple y-values for the same x-value. This violates the definition of a function, where each x-value must have a unique y-value.

Graph C also does not represent a function because it fails the vertical line test. The vertical line passing through x = -2 intersects the graph at two different points, violating the uniqueness requirement of a function.

In conclusion, Graph B and Graph D are the only ones that represent functions, making option A. Graph B and Graph D the correct answer.

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Answer:

The correct answer is 1

Step-by-step explanation:

I hope this helps with your question :)

Answer:

It is 1

Step-by-step explanation:

Because it to the left 2 times and down 3 times which are both negative

Answer:

48 minutes

Step-by-step explanation:

6 : 16 = 18 : x

x = 16 * 18 / 6

x = 16 * 3

x = 48

Answer:

$4.35

Step-by-step explanation:

Answer:

Step-by-step explanation:So that is a right angle,which means the sum is 90 degrees.so you subtract 90 from 62 then you have your answer.

Answer:

x = 28°

Step-by-step explanation:

It is given that the full angle measurement is a right angle (90°), denoted by the blue(?) box.

Set the equation:

Total angle measurement (90) = x + 62

I~

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Subtract 62 from both sides of the equation:

90 (-62) = x + 62 (-62)

x = 90 - 62

x = 28

x = 28° is your answer.

~

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a. To determine if there are any arbitrage opportunities in the market, we need to check if the payoff matrix A is linearly dependent on the price vector S.

If A and S are linearly dependent, then there are no arbitrage opportunities. If they are linearly independent, we can construct an arbitrage portfolio.

In this case, we observe that the rank of the matrix A is 2, which is less than the number of columns (3). Therefore, A and S are linearly dependent, indicating that there are no arbitrage opportunities in this market.

b. To find the no-arbitrage price of the security with payoff b, we need to determine the weights of the basis assets that replicate the payoff vector b. We can do this by solving the equation A * x = b, where A is the payoff matrix and x is the vector of weights.

The equation, we get the following system of equations:

x₁ + x₃ = 5

3x₁ + 2x₂ + x₃ = 4

Solving this system of equations, we find x₁ = 2, x₂ = -1, and x₃ = 3.

Therefore, the no-arbitrage price of the security with payoff b is given by the dot product of the weights and the price vector S:

No-arbitrage price = (2 * 1) + (-1 * 2) + (3 * 1.5) = 3 + (-2) + 4.5 = 5.5

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Therefore,  SE1/SE2 is less than 1, we can conclude that the sampling distribution for the SRS from California (1700 people) would have a smaller standard deviation compared to the SRS from Detroit (1000 people).

The sampling distribution for the SRS of 1000 people from Detroit would have a smaller standard deviation because the population size is smaller. As population size increases, the standard deviation of the sampling distribution decreases, so the larger population of California (34 million) would result in a larger standard deviation for the sampling distribution of the SRS of 1700 people.

we need to compare the standard errors of the two simple random samples (SRS) from California and Detroit.
Standard Error (SE) is calculated as follows:
SE = σ / √n
where σ is the population standard deviation and n is the sample size.

1. For California:
Sample size (n1) = 1700
Population size (N1) = 34 million

2. For Detroit:
Sample size (n2) = 1000
Population size (N2) = 1 million
Now, let's compare the SE for both:
SE1/SE2 = (σ1/√n1) / (σ2/√n2)

Without knowing the population standard deviations (σ1 and σ2), we cannot determine the exact standard errors. However, since both samples are taken from human populations, it's reasonable to assume that the population standard deviations are relatively similar.
Therefore, we can focus on the sample sizes to compare the standard errors:
SE1/SE2 ≈ (√n2) / (√n1)
SE1/SE2 ≈ (√1000) / (√1700)
SE1/SE2 ≈ (31.62) / (41.23)
SE1/SE2 ≈ 0.77

Therefore,  SE1/SE2 is less than 1, we can conclude that the sampling distribution for the SRS from California (1700 people) would have a smaller standard deviation compared to the SRS from Detroit (1000 people).

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Given:

\(\to \bold{-x -7y = 14}\\\\\to \bold{-4x -14y =28}\\\\\)

To find:

\(\bold{x \ and \ y}=?\)

Solution:

\(\to \bold{-x -7y = 14}..................... (i) \\\\\to \bold{-4x -14y =28} .................(ii)\\\\\)

Solving the equation (i):

\(\to \bold{-x -7y = 14} \\\\ \to \bold{-x= 14+7y} \\\\ \to \bold{x= - (14+7y)} \\\\\)

Putting the value of x into the equation (ii):

\(\to \bold{-4(-(14+7y)) -14y =28} \\\\\to \bold{4(14+7y) -14y =28} \\\\\to \bold{56+28y -14y =28} \\\\\to \bold{56+14y =28} \\\\\to \bold{28+14y =0} \\\\\to \bold{14y =-28} \\\\\to \bold{y =\frac{-28}{14}} \\\\\to \bold{y =-2} \\\\\)

Putting the value of y into the equation (i):

\(\to \bold{-x -7(-2) = 14}\\\\\to \bold{-x +14 = 14}\\\\\to \bold{-x = 14-14}\\\\\to \bold{x = 0}\\\\\)

So, the value of \(\bold{x=0 \ and\ y= -2}\\\\\)

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Answer:

P=1538.461

Step-by-step explanation:

do it by the formula of

I=PRT, I=750 R=3.25% T=15

9) The first equation represents a circle with center (5, -2) and radius 9. The second equation represents a circle with center (0, 7) and radius 8.

The general form of the circle with center (4, -3) and radius 5 is (x-4)^2 + (y+3)^2 = 25.

The circle represented by the equation x^2 + y^2 + 4x - 2y - 4 = 0 has a center at (-2, 1) and a radius of √10.

9) For the first equation, we can compare it with the standard form of a circle equation, (x-h)^2 + (y-k)^2 = r^2, where (h, k) represents the center and r represents the radius. From the given equation, we find that the center is (5, -2) and the radius is 9. Similarly, for the second equation, the center is (0, 7) and the radius is 8.

To write the general form of a circle, we use the equation (x-h)^2 + (y-k)^2 = r^2 and substitute the given values. In this case, the equation becomes (x-4)^2 + (y+3)^2 = 25.

The equation x^2 + y^2 + 4x - 2y - 4 = 0 can be rearranged by completing the square to obtain the standard form of a circle equation. After completing the square for x and y terms, the equation becomes (x+2)^2 + (y-1)^2 = 10. Comparing it with the standard form, we find that the center is (-2, 1) and the radius is √10.

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Answer:

2028 square inches

Step-by-step explanation:

The side length of the styrofoam cube measures 6 1/2 inches.

Step 1

We find the surface area of a cube

The formula is given as

Surface Area = 6a²

Where a = Side length of the cube = 6 1/2 inches

Hence,

Surface area of a cube = 6 × (6 1/2inches)²

= 253.5 square inches

Step 2

Huy is painting eight styrofoam cubes for a science project.

The total surface area that Huy will paint is calculated as:

1 styrofoam cube = 253.5 square inches

8 styrofoam cubes = x

Cross Mulitiply

x = 8 × 253.5 square inches

x = 2028 square inches

Therefore, the total surface area that Huy will paint is 2028 square inches.

Answer: D, x < 8

Step-by-step explanation: Subtract 18 from both sides.

Simplify the expression

Subtract the numbers

Subtract the numbers

Divide both sides by the same factor, and flip the relation because the factor is negative

Cancel terms that are in both the numerator and denominator

Divide the numbers

−6x+18−18>−30−18=

=x<8

The difference in the dollar value of Assistantship (Stipend) between art and science fields with  standard errors is equal to 1.214.

Mean      24041.62203                 25952.36501

Sample mean difference between Assistantship (stipend) in arts and science is equal to

=  $25952.36501 - $24041.62203

= $1910.74298.

Hypothesized mean difference is 0 (there is no difference in stipend between the two fields).

Variance        621483.0801            615193.5853

Sample size    521                             479

Standard error of the difference is,

=√[(variance in arts / sample size in arts) + (variance in science / sample size in science)]

= √[(615193.5853 / 479) + (621483.0801 / 521)]

= $49.77

t-statistic

= (sample mean difference - hypothesized mean difference) / standard error of the difference

Substitute the values into the t-statistic formula,

⇒ t-statistic = ($1910.74298 - 0) / $49.77

⇒ t-statistic = 38.39

t-critical value for a two-tailed test with 992 degrees of freedom at a significance level of 0.05 is 1.9624.

t-statistic (38.39) > t-critical value (1.9624)

⇒Reject the null hypothesis that there is no difference in stipend between the two fields.

standard errors

= t-statistic / √(sample size)

= 38.39 / √(479 + 521)

= 38.39 /31.62

=1.214

Therefore,  the difference in the dollar value of Assistantship (Stipend) between these two fields is 1.214 standard errors away from the hypothesized difference.

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Answer:

48>-6(b+3 ) ➡️ 8>-(b+3)➡️8>-b-3 ➡️b+8-3 ➡️b>-3-8➡️b>-11

Step-by-step explanation:

the answer is b>-11

Answer

Step-by-step explanation:

Step 1 : Simplify both sides of inequality

48 > 6b - 18

Step 2 :Flip the equation

-6b - 18 < 48

Step 3 :Add 18 to both sides

-6 - 18 + 18 < 48 + 18 = -6 < 66

Step 4:Divide both sides by 6

-66/-6

<66/-6

b < - 11

Hope this clarifies your doubt!

a^−5(a^2)(a^−3)

= \(\frac{a^2}{a^8}\)

= \(\frac{1}{a^6}\)

The answer is D.

Colton has $67,696 in a savings account that earns 2% interest per year. The interest is not compounded. How much interest will he earn in 1 year?​

we know that

2%=2/100=0.02

so

To find out the amount of interest, multiply the total amount by the percentage in decimal form

(67,696)*0.02

The probability that an unprepared student, who can eliminate one possible answer on the first four multiple-choice questions and guess on all six questions, will answer at least four questions correctly on the test.

There are a total of 5 possible answers per question, so the probability of guessing the correct answer for any given question is 1/5. After eliminating one possible answer on the first four questions, the student has a 1/4 chance of guessing the correct answer for each of those questions.

For the remaining two questions, the student has a 1/5 chance of guessing the correct answer for each question. To calculate the probability of the student answering at least four questions correctly, we need to consider all possible outcomes where the student guesses at random.

There are 5^6 total possible outcomes, since there are 5 possible answers for each of the 6 questions. The number of ways the student can answer at least 4 questions correctly can be found by considering the possible combinations of questions that the student answers correctly.

There are 6 possible combinations of 4 questions that the student can answer correctly, and there are 15 possible combinations of 5 questions that the student can answer correctly.

There is only 1 possible combination where the student answers all 6 questions correctly. Therefore, the probability of the student answering at least 4 questions correctly is:

[(6 choose 4)(1/4)^4(3/4)^2] + [(15 choose 5)(1/4)^5(3/4)^1] + (1/5)^2 = 0.0194

So the probability that the student will answer at least four questions correctly is approximately 0.0194, or 97/500, when expressed as a fraction.

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Answer:

54.8

Step-by-step explanation:

41+39+48+52+46+62+54+40+96+52+98+40+42+52+60 = 822

822/15= 54.8

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Answer:

42

Step-by-step explanation:

6*(3+4)6*7

42

Answer:

42

Step-by-step explanation:

\(6 \times 3 + 6 \times 4 \\ 18 + 24 = 42\)

Face validity refers to the superficial appearance of a measurement or assessment to accurately measure a concept, but it is not considered a true form of validity, although it can still positively impact a study's credibility and acceptance.

a) Face validity refers to the degree to which a measurement or assessment appears to accurately measure the concept it is intended to measure, based solely on its face value or superficial characteristics.

b) Face validity is not considered a true form of validity in the technical sense because it does not actually test the validity of the measurement or assessment through empirical evidence.

c) Despite its limitations, face validity can still be a positive attribute for a study because it can help to establish the credibility and acceptability of the measurement or assessment among potential users or participants. In the case of the study described in the question, the fact that the measures used in the study were face-valid, i.e., they appeared to measure the intended constructs, could increase the likelihood that participants would engage with the measures and that the results of the study would be seen as credible by the research community.

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C) the equation can be written as:y = mx + b. D) The slope can be interpreted as a measure of the association between the use of marijuana and other drugs.

c) Write the equation you would use to estimate the percentage of teens who use Other Drugs from the percentage who have used Marijuana.The equation to estimate the percentage of teens who use Other Drugs from the percentage who have used Marijuana is given by the formula:y = mx + bwhere y represents the estimated percentage of teens who use Other Drugs and x represents the percentage of teens who have used Marijuana.

The slope, m, represents the proportion of teens who have used other drugs after using marijuana, and b represents the percentage of teens who use Other Drugs when the percentage who have used Marijuana is 0.

Therefore, the equation can be written as:y = mx + b

Where x represents the percentage of teens who have used Marijuana, m represents the proportion of teens who have used other drugs after using marijuana, and b represents the percentage of teens who use Other Drugs when the percentage who have used Marijuana is 0.

d) Explain in context what the slope of this line means.The slope of this line represents the proportion of teens who have used other drugs after using marijuana. That is, if a certain percentage of teens have used marijuana, the slope of the line estimates the percentage of teens who have used other drugs.

In other words, the slope indicates how much more likely teens are to use other drugs after using marijuana. A positive slope would indicate that more teens use other drugs after using marijuana, while a negative slope would indicate that fewer teens use other drugs after using marijuana.

The slope can be interpreted as a measure of the association between the use of marijuana and other drugs.

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Answer:

12

bcz he can't put a 0.725 fish so it will be rounded up back to 12

The greatest number of neon tetra fish he puts in the tank is 12.

A cuboid is a solid in three dimensions with six rectangular faces, eight vertices, and twelve edges. Three dimensions, including length, breadth, and height, define a cuboid. A cuboid with integer edges is referred described as being perfect.

Given:

Sahil has a fish tank in the shape of a cuboid, as shown in the diagram.

The tank is 55 cm wide, 28 cm long and height is 33 cm.

And the surface of the water in the tank is 3 cm below the top of the tank.

That means,

to determine the volume,

So, the volume of cuboid

= 55 x 28 x 33

= 50820 cubic centimeters.

And we know 1000 cubic centimeters is 1 liter of water.

So, 50820 = 50.820

And divide by 4

We get the greatest number of neon tetra fish he puts in the tank.

50.820 / 4

= 12.705

≈ 12

Therefore, 12 is the required number for neon tetra fish.

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The equation ²-3v-28=0 has two solutions, v = 7, -4.

Given quadratic equation is:

²-3v-28=0

To solve for v, we have to use the quadratic formula, which is given as:  \(x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$$\)

Where a, b and c are the coefficients of the quadratic equation ax² + bx + c = 0.

We need to solve the given quadratic equation,

²-3v-28=0

For that, we can see that a=1,

b=-3 and

c=-28.

Putting these values in the above formula, we get:

\(v=\frac{-(-3)\pm\sqrt{(-3)^2-4(1)(-28)}}{2(1)}$$\)

On simplifying, we get:

\(v=\frac{3\pm\sqrt{9+112}}{2}$$\)

\(v=\frac{3\pm\sqrt{121}}{2}$$\)

\(v=\frac{3\pm11}{2}$$\)

Therefore v_1 = {3+11}/{2}

=7

or

v_2 = {3-11}/{2}

=-4

Hence, the values of v are 7 and -4. So, the solution of the given quadratic equation is v = 7, -4. Thus, we can conclude that ²-3v-28=0 has two solutions, v = 7, -4.

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The solutions to the equation ²-3v-28=0 are v = 7 and v = -4.

To solve the quadratic equation ²-3v-28=0, we can use the quadratic formula:

v = (-b ± √(b² - 4ac)) / (2a)

In this equation, a, b, and c are the coefficients of the quadratic equation in the form ax² + bx + c = 0.

For the given equation ²-3v-28=0, we have:

a = 1

b = -3

c = -28

Substituting these values into the quadratic formula, we get:

v = (-(-3) ± √((-3)² - 4(1)(-28))) / (2(1))

= (3 ± √(9 + 112)) / 2

= (3 ± √121) / 2

= (3 ± 11) / 2

Now we can calculate the two possible solutions:

v₁ = (3 + 11) / 2 = 14 / 2 = 7

v₂ = (3 - 11) / 2 = -8 / 2 = -4

Therefore, the solutions to the equation ²-3v-28=0 are v = 7 and v = -4.

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Step-by-step explanation:

Let's find the rule in the pattern.

6, 4, 2, 0, -2.

To get to 4 you must subtract 2.

To get to 2 you must subtract 2.

To get to 0 you must subtract 2.

To get to -2 you must subtract 2.

The rule is to subtract 2.

Subtract 2 from -2 to represent the first unknown term.

\( - 2 - 2 = - 4\)

-4 is the next term.

Subtract 2 from -4 to represent the second unknown term.

\( - 4 - 2 = - 6\)

-6 is the next term.

Subtract 2 from -6 to represent the third unknown term.

\( - 6 - 2 = - 8\)

-8 is the next term.

Answer:

If (x + 1)(x - 3) = 12, then which of the following statements is true?

1.) x + 1 = 12 or x - 3 = 12

is true

Given a quadrilateral ABCD, with the sides AB and DC parallel and equal in length. Let us denote angle BAD as ∠α and angle ADC as ∠β. Now, we have to find the values of the variables x and y such that ABCD is a parallelogram.

Parallelogram has a pair of parallel sides. So, we have AB ∥ CD. It is given that ∠α = ∠β and AB = CD. So, by angle-angle-side rule, the two triangles ABD and DCA are congruent.

In triangle ABD, we have:∠DAB = 180° - ∠α = 180° - ∠β (as ∠α = ∠β)⇒ ∠DAB + ∠CDA = 180° (linear pair of angles)⇒ ∠CDA = ∠β.In triangle DCA, we have:∠CDA = ∠β (as obtained above)⇒ ∠CAD = ∠α (as ∠α = ∠β)⇒ ∠BDC = 180° - ∠α = 180° - ∠β (linear pair of angles)⇒ ∠BDC = ∠DAB.In quadrilateral ABCD, the adjacent angles are supplementary. So, we have:∠BDC + ∠BCD = 180° (adjacent angles are supplementary)⇒ ∠DAB + ∠BCD = 180° (as ∠BDC = ∠DAB)⇒ ∠BCD = 180° - ∠DAB.In triangle ACD, we have:∠C = ∠C (common)⇒ ∠CAD + ∠BCD = 180° (angles of a triangle add up to 180°)⇒ ∠α + (180° - ∠DAB) = 180°⇒ ∠α + ∠β = 180°.

Now, we can solve for x and y.In triangle ABD, we have:AB = BD⇒ 3x = 21 - x⇒ 4x = 21⇒ x = 21/4.In triangle DCA, we have:CD = DA⇒ 3y = 22 - y⇒ 4y = 22⇒ y = 11/2. Therefore, the value of x is 21/4 and the value of y is 11/2.

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Answer:

n equals 4

Step-by-step explanation:

Answer: \(\Large\boxed{x=40^\circ}\)

Step-by-step explanation:

Given information

∡ 1 = 90°

∡ 2 = 50°

∡ 3 = x°

Total Angle = 180° (Triangle angle sum theorem)

Given formula

∡ 1 + ∡ 2 + ∡ 3 = Total Angle

Substitute values into the formula

(90) + (50) + (x) = (180)

Combine like terms

140 + x = 180

Subtract 140 on both sides

140 + x - 140 = 180 - 140

\(\Large\boxed{x=40^\circ}\)

Hope this helps!! :)

Please let me know if you have any questions

Check the picture below.

so the area of it, is really the area of a 16x16 square and four triangles with a base of 16 and a height of 15.

\(\stackrel{ \textit{\LARGE Areas}}{\stackrel{ square }{(16)(16)}~~ + ~~\stackrel{ \textit{four triangles} }{4\left[\cfrac{1}{2}(16)(15) \right]}}\implies 256~~ + ~~480\implies \text{\LARGE 736}~cm^2\)