A student calculated the slope of the line graphed below to
be 2.

Explain the mistake and give the correct slope.

Answer:

The matrix does not have an inverse (D)

Step-by-step explanation:

The matrix is singular, therefore doesn't have an inverse

Answer:

you are subtracting 1.40 everytime to get the number at the bottom

Step-by-step explanation:

2 - 1.40 = 1.40

3 - 1.40 = 2.40

6 - 1.40 = 5.40

7 - 1.40 = 6.40

Answer:

1 : 2

Step-by-step explanation:

Rectangular prism

             Faces = 6

Up and  bottom  ;  right and left  ;  front  and back . So total 6 faces.

Edges: Two faces meet at an edge.

          Edges = 12

Face :Edges = 6 : 12

                    = 6÷6 : 12÷6

                    = 1 : 2

It tells you that Fred has three times the score more than Matt.

This is because Matt has x points, Fred tops Matt by 3x points.

Answer:

623 mm²

Step-by-step explanation:

I am going to split this shape into a 15mm x 19mm rectangle and a 26mm x 13mm rectangle. (the 19mm comes from 32mm at the bottom minus 13mm at the top to find how long the first rectangle is)

Rectangle 1: 15mm • 19mm = 285mm²

Rectangle 2: 26mm • 13mm = 338mm²

Total Area: 285mm² + 338mm² = 623mm²

The correct answer of joint hypotheses on multiple regression coefficients ption (D) is the exception in this case.

In multiple regression analysis, joint hypotheses involve the null hypothesis of equality or inequality between two or more regression coefficients.

Option (A) H0: 3/2 = 1 and 4 = 0 is an example of a joint hypothesis that involves the null hypothesis of equality between two regression coefficients.

Where the coefficients are 3/2 and 1, and another null hypothesis of inequality between a coefficient and zero, where the coefficient is 4.

Option (C) H0: 1 = −2 and 1 + 2 = 1 is an example of a joint hypothesis that involves the null hypothesis of equality between a coefficient and a negative value.

Where the coefficient is 1, and another null hypothesis of equality between the sum of two coefficients and a value, where the coefficients are 1 and 2.

Option (D) H0: 2 = 0 and 3 = 0 is an example of a joint hypothesis that involves the null hypothesis of equality between two coefficients and zero, where the coefficients are 2 and 3.

However,

Option (B) H0:1 + 2 = 1 is not a joint hypothesis involving regression coefficients.

It is simply an equation involving two constants, 1 and 2, and the null hypothesis states that their sum is equal to 1.

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Answer:

3x^3+4x^2-6x

Step-by-step explanation:

Answer:

258

Step-by-step explanation:

the required equation for the translation y = 2sin x, π/4 units to the right is; y = 2sin (x-π/4)

The given function is y = 2sin x. π/4 units to the right can be considered as a translation. To write an equation for the given translation, the formula to be used is f(x-a)

For translating the function y = 2 sin x, π/4 units to the right, the following steps can be followed: The general formula is; f(x-a) For the given function, a = π/4 (as the function needs to be translated π/4 units to the right).

The equation becomes; y = 2 sin (x-π/4) Therefore, the required equation for the translation y = 2sin x, π/4 units to the right is; y = 2sin (x-π/4). For the given function, a = π/4 (as the function needs to be translated π/4 units to the right).

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Answer:

ABOOMABALACACA VETE ALA VERGA

Step-by-step explanation:

CITA TIEMPOS

Answer:

x<-2

Step-by-step explanation:

17+4x<9

4x<-8

x<-2

The solution is:

Work/explanation:

Recall that the process for solving an inequality is the same as the process for solving an equation (a linear equation in one variable).

Make sure that all constants are on the right:

\(\bf{4x < 9-17}\)

\(\bf{4x < -8}\)

Divide each side by 4:

\(\bf{x < -2}\)

To show that (A U B) C ⊆ A U B, we need to prove that every element in the set (A U B) C is also in the set A U B. In other words, if an element belongs to the complement of (A U B), it must also belong to A U B.

Let's assume that x is an arbitrary element in (A U B) C. This means that x is not in the set A U B, which implies that x does not belong to A and x does not belong to B.

Since x is not in A U B, it must be in the complement of A U B. By definition, the complement of A U B contains all elements that are not in A U B. Hence, x belongs to the complement of A U B.

Now, we know that x belongs to the complement of A U B, and we also know that x does not belong to A U B. Therefore, x must belong to the complement of A U B but not to A U B itself.

This implies that x belongs to the complement of (A U B), which means x is an element of (A U B) C. Hence, we can conclude that if x belongs to (A U B) C, then x also belongs to A U B.

Since x was chosen arbitrarily, this conclusion holds for all elements in (A U B) C. Therefore, we have shown that (A U B) C ⊆ A U B.

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Answer:

(47 - 3) * (51-2)

Step-by-step explanation:

By using a maclaurin series to obtain the maclaurin series for the given function is  F(x) = x cos(5x) = \(1 - 25x^2/2! + 625x^4/4! - 15625x^6/6! + ...\)

To obtain the Maclaurin series for the function f(x) = x cos(5x), we need to write the Maclaurin series for cos(5x). The Maclaurin series for cos(x) is: \(cos(x) = 1 - x^2/2! + x^4/4! - x^6/6! + ...\)

Using this formula, we can substitute 5x for x and obtain the Maclaurin series for cos(5x): cos(5x) =\(1 - (5x)^2/2! + (5x)^4/4! - (5x)^6/6! + ...\)

\(= 1 - 25x^2/2! + 625x^4/4! - 15625x^6/6! + ...\)

We can substitute this series into the original function f(x) = x cos(5x) and obtain its Maclaurin series: f(x) = x cos(5x)

\(= x[1 - 25x^2/2! + 625x^4/4! - 15625x^6/6! + ...]\)

\(= x - 25x^3/2! + 625x^5/4! - 15625x^7/6! + ...\)

This is the Maclaurin series for the function f(x) = x cos(5x). It is obtained by substituting the Maclaurin series for cos(5x) into the original function and simplifying the resulting series. Maclaurin series are useful for approximating functions using polynomials. By truncating the series after a certain number of terms, we can obtain a polynomial that approximates the original function to a certain degree of accuracy. The accuracy of the approximation depends on the number of terms in the series that are used. The more terms we include, the more accurate the approximation will be.

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we need to randomly sample 145 individuals from the population and calculate their mean IQ.

To determine the required sample size for estimating the population mean with 98% confidence to within 4 IQ points of the true mean, we can use the formula:
n = \((Z\alpha /2 × σ / E)^{2}\)
Where: n = sample size
Zα/2 = the Z-score for the desired confidence level (98% confidence corresponds to Zα/2 = 2.33)
σ = the population standard deviation (given as 16 IQ points)
E = the desired margin of error (4 IQ points)
Plugging in these values, we get:
n = \((2.33 × 16 / 4)^{2}\)
n = 144.49
Rounding up to the nearest whole number, we get a required sample size of n = 145.

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To find the real solutions of the equation x^2 - 3x - 40 = 0 using factoring, we need to factor the quadratic expression into two binomials and set each binomial equal to zero.the real solutions to the equation x^2 - 3x - 40 = 0 are x = 8 and x = -5

To factor the quadratic expression x^2 - 3x - 40, we look for two numbers whose product is -40 and whose sum is -3. After some trial and error, we find that the numbers are -8 and 5.
Thus, we can rewrite the quadratic expression as (x - 8)(x + 5) = 0.
Setting each binomial equal to zero gives us two equations to solve:
x - 8 = 0 and x + 5 = 0.
Solving the first equation, we find x = 8. Solving the second equation, we find x = -5.
Therefore, the real solutions to the equation x^2 - 3x - 40 = 0 are x = 8 and x = -5.

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Answer:

the temp now is 0 degrees

-12+12=0

Step-by-step explanation:

hope i helped

brainliest pls!

-Zylynn

we have the equation

3y^2 - 6y = 1

equate to zero

3y^2 - 6y - 1=0

a=3

b=-6

c=-1

substitute the given values in the formula

simplify

the solutions for y are

and

After using the test statistic z, P(3.6<X<53.5) = 0.967.

In the given question, suppose X is a normal random variable with mean 35 and sdev 10.

We have to find P(3.6<X<53.5).

Fro the given question,

Mean x = 35

sdev s = 10

Z = X - mu / sd

P(3.6<X<53.5) = P ( 3.6-35/10 < Z < 53.5-35/10 )

P(3.6<X<53.5) = P ( -31.4/10 < Z < 18.5/10 )

P(3.6<X<53.5) = P ( -3.14 < Z < 1.85 )

P(3.6<X<53.5) = P ( Z < 1.85) - P ( Z < -3.14)

left tail of both

P(3.6<X<53.5) = 0.9678 - 0.0008

P(3.6<X<53.5) = 0.967

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The right answer is:

Suppose X is a normal random variable with mean 35 and sdev 10. Find P(3.6<X<53.5)

Answer:

$8 for student tickets and $4.40 for senior tickets

Step-by-step explanation:

10 (5x +8y=94)

5 (10x +13y=164)

50x+80y=940

- 50x +65y=820

80y-65y= 940-820

15y= 120/15

y=8

(y is the cost of student tickets)

5x+8y=94

5x+8(9)=94

5x+72=94-72

5x=22/5

x= 4.4

The statistic, which is the covariance of two variables, being calculated as -150 indicates that there is a negative linear relationship between the two variables.

Covariance measures the direction and strength of the linear relationship between two variables. A positive covariance indicates a positive linear relationship, while a negative covariance indicates a negative linear relationship. The magnitude of the covariance indicates the strength of the relationship. In this case, a covariance of -150 suggests a moderately strong negative linear relationship between the variables.

A negative covariance implies that as one variable increases, the other variable tends to decrease. In other words, the variables move in opposite directions. The magnitude of the covariance (-150) suggests that the relationship between the variables is relatively strong.

However, it is important to note that covariance alone does not provide information about the exact nature or strength of the relationship. Further analysis and interpretation, such as calculating the correlation coefficient, are needed to fully understand the relationship between the two variables.

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Answer:

7 m

Step-by-step explanation:

We are told that;

100 cm = 1 m

Thus; 2.54 cm = 2.54 × 1/100 = 0.0254 m

This means that;

1 inch = 0.0254 m

Thus; 275 inches will give; 275 × 0.0254/1 = 6.985 m

Approximating to the nearest metre gives 7 m

The bias displayed by investors who consider the $60 price a bargain relative to the recent $100 price is: b) Anchoring

Anchoring bias refers to the tendency to rely heavily on the first piece of information encountered (the anchor) when making decisions or judgments. In this case, the initial anchor is the high price of $100, and investors are using that as a reference point to evaluate the $60 price as a bargain. They are "anchored" to the previous high price and are influenced by it when assessing the current value.

Anchoring bias is a cognitive bias that affects decision-making processes by giving disproportionate weight to the initial information or reference point. Once an anchor is established, subsequent judgments or decisions are made by adjusting away from that anchor, rather than starting from scratch or considering other relevant factors independently.

In the given scenario, the initial anchor is the high price of $100 per share for Walmart. When the price falls to $60 per share, some investors consider it a bargain relative to the previous high price. They are influenced by the anchor of $100 and perceive the $60 price as a significant discount or opportunity to buy.

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Answer:

3.7 hrs

Step-by-step explanation:

Speed = 15km/ 1 h

Distance = 56 km

Time  = x

15/1 = 56/x

x= 56 / 15 ~  3.7 hrs

I hope im right!!

Answer:

multiply ata gagawin dyan Ewan

9514 1404 393

Answer:

  y = 5x +20

Step-by-step explanation:

We assume you want the total cost (y) of x months of membership at the dance club.

This will be the sum of the start-up fee (20) and the product of the monthly fee (5) and the number of months (x).

  y = 5x +20

Comparing this to the slope-intercept form of the equation of a line, we see ...

  y = mx + b

  m = 5

  b = 20

The first step in hypothetical-deductive reasoning is to formulate a hypothesis. A hypothesis is an educated guess or prediction based on observations and previous knowledge. It is a statement that can be tested and possibly falsified through further observations and experiments. Once a hypothesis is formulated, the next step is to design an experiment or observation to test it. This involves identifying variables that can be manipulated or measured and determining the methods for manipulating or measuring them. After the experiment or observation is conducted, the data are analyzed and conclusions are drawn based on the results. The conclusions may confirm or reject the hypothesis, leading to further refinement of the hypothesis or the development of a new hypothesis.

The first step in hypothetical-deductive reasoning is the formulation of a hypothesis.

Hypothetical-deductive reasoning starts with the formulation of a hypothesis, which serves as a tentative explanation or prediction for a given phenomenon or problem. In this process, an individual or researcher uses their knowledge, observations, and previous information to generate a possible solution or explanation.

The formulation of a hypothesis involves considering the available evidence, conducting research, and analyzing the existing data. It requires critical thinking and creativity to develop a logical and testable statement that can be further investigated. The hypothesis should be specific, clear, and based on logical reasoning.

Once a hypothesis is formulated, it serves as a starting point for the deductive phase of reasoning. Deductive reasoning involves making specific predictions or deriving logical consequences based on the hypothesis. These predictions can then be tested through empirical research or experiments to evaluate the validity of the hypothesis and gather further evidence.

Overall, the first step in hypothetical-deductive reasoning is the formulation of a hypothesis, providing a framework for subsequent investigation and the generation of testable predictions.

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