What measure in linear-regression analysis provides the percent of variation in the dependent variable (y) that is explained by the regression equation?

The domain and range of trigonometric functions are as follows;

Function Domain Range

sin(x). All real numbers [-1, 1]

cos(x). All real numbers [-1, 1]

tan(x). {x| x ≠ -3•π/2, -π/2, π/2, } R

The domain and range of the inverse sine, cosine, and tangent are;

Function Domain Range

arcsin(x). (-1, 1) [-π/2, π/2]

arccos(x). (-1, 1) [0, π]

arctan(x) (-∞, ∞). [-π/2, π/2]

sin(x)

The domain of sin(x) is the set of possible values for x, for which sin(x) is defined, which is;

The range of sin(x) is the set of possible values output values of sin(x) is, which is; -1 ≤ sin(x) ≤ 1

cos(x)

Similarly;

tan(x)

tan(x) = sin(x)/cos(x), however, cos(x) = 0, when x = -3•π/2, -π/2, π/2, 3•π/2...

The domain of tan(x) is therefore;

sin(x) increases as cos(x) decreases, therefore;

The range of tan(x) = sin(x)/cos(x) is therefore;

arcsin(x)

The input of arcsin(x) is sin(x)

sin(x) = opposite/hypotenuse

Given that the magnitude of hypotenuse > opposite, the ratio, opposite/hypotenuse is < 1 in magnitude

The domain of arcsin(x) is therefore;

The range is the set of possible outputs, which is [-π/2, π/2], given that sin(x) is positive and negative from -π/2, π/2

arccos(x)

Similarly;

arctan(x)

The input of arctan(x) is tan(x)

tan(x) = sin(x)/cos(x)

The domain of arctan(x) is therefore;

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Answer:

yes

Step-by-step explanation:

if (a,b) is on the graph of f(x) then (-a,-b) is on the graph of f^-1(x)

The height of the machine piston after 10 seconds is 2. 5m . Option B

Given the function;

y = 4.4 sin (0.4x -1.7) +2.3,

Where;

Given x as 10 seconds

y = 4. 4 sin ( 0.4(10) - 1. 7) + 2. 3

y = 4. 4 sin ( 4 - 1. 7) + 2. 3

y = 4. 4 sin (2. 3) + 2. 3

y = 4. 4(0. 04013) + 2. 3

y = 2. 47

y = 2. 5 meters in the nearest tenth

Thus, the height of the machine piston after 10 seconds is 2. 5m . Option B

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Answer:

D. 5.6 m

Step-by-step explanation:

Use your context clues.

All the other answers had O, like an X, so I put D, which was correct. *Wink*

debt-equity ratio is 0.92.

A firm's total liabilities and shareholder equity are compared using the debt-to-equity (D/E) ratio, which may be used to determine how heavily reliant a company is on debt. D/E ratios vary by sector and are most useful for comparing a firm to its closest rivals or tracking changes in its reliance on debt over time. When comparing similar organizations, a larger D/E ratio denotes greater risk, whereas a very low one can signify that a company is not utilizing debt funding to grow. Since long-term debt entails greater risk than short-term commitments, investors frequently change the D/E ratio to simply take it into account.

Debt-equity ratio is computed as follows:

= total debt ratio / (1 - total debt ratio)

= 0.48 / (1 - 0.48)

= 0.48 / 0.52

= 0.92

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A large polymeric molecule that is nonpolar over most of its structure but very polar at one end DNA and Phospholipid.

DNA and phospholipid were two examples of huge polymeric molecules that would be polar solely on a single end although nonpolar on the majority of their structure, as opposed to the other alternatives, which would be all monomeric compounds. Nucleotides are used to help DNA create its polymeric structure. Phosphodiester linkage aids in the arrangement of the nucleotides.

The polar molecule would only be found in one area of the vast strand-like polymeric structure. At one extremity of the strand, there is a polar phosphate link; with its assistance, some other monomeric units were joined, generating the phosphodiester bonds. Two fatty acids and the first molecule of glycerol work together to generate the structure known as the phosphodiester.

The phosphate group is present in the polar head region of the phosphate group. This help in the polarity of the phospholipid structure making the head region of the polymeric molecule hydrophilic.  

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If the school now has 1,378 students enrolled, last year, the number of students enrolled was B. 1,300.

Using the mathematical operations of addition, subtraction, division, and multiplication, we can determine the number of students.

Mathematical operations help us to determine unknown values, given a known domain.

Increase in school enrollment over last year's = 6%

Enrollment for the current year = 1,378

Let last year's enrollment = 100%

And the current year's = 1.06 (100 + 6)

Therefore, the enrollment last year = 1,300 (1,378/1.06)

Thus, the enrollment (number) last school year was B. 1,300.

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Answer:

D

Step-by-step explanation:

2x+6=-3x-14

2x+3x=-14-6

5x=-20

x=-4

Answer:

X = -4

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

The pan that comes closest in area is the 8-inch square pan.

A circle is a bounded figure which points from its center to its circumference is equidistant.

Area of a circle = πr²

Where :

π = pi = 22/7

R = radius = diameter / 2 = 9/2 = 4.5 inches

22/7 x 4.5² = 63.64 in²

A square is a quadrilateral with four equal sides.

Area of a square = length²

8² = 64 in²

9² = 81 in²

10² = 100 in²

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The rate of grapes said by Emika i.e., 0.4 pounds per dollar is the correct rate.

We know that the rate is nothing but the ratio of two different quantities which have different units.

In this question, we have been given two pounds of grapes cost $5

First we find the rate in pounds per dollar.

2 pounds of grapes = $5

As rate is the ratio of two different quantities, we find the ratio (pounds per dollar).

= 2 pounds /5 dollars

= (2/5) pounds per dollar

= 0.4 pounds per dollar              .......(1)

This means the rate of grapes is 0.4 pounds per dollar.

In this question, we have been given  Jordan says that's 2.5 pounds per dollar and Emika says it's 0.4 pounds per dollar.

From (1), we can clearly say that Emika is correct.

Therefore, the rate of grapes said by Emika i.e., 0.4 pounds per dollar is the correct rate.

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On simplifying  the given expression the no. that goes in green box is -7

The rule of addition of two numbers

adding two positive integers result in positive integer.

adding two negative integers results in the sum with a negative sign.

addition of two different signed Integer will result in subtraction only and the sign of the result is same as the larger number sign.

so

2 + 16x - 9 - 10x

6x + [-7]                   HERE [ 2 + (-9) = -7 ]

On simplifying  the given expression the no. that goes in green box is -7

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a)The x co-ordinates of P and Q satisfy the equation x² + 4x - 5 = 0.

b)The co-ordinates of P and Q are (-5, -1) and Q = (1, 5).

The given equation of the circle is;

x² + y² = 26.

Th circle satisfies the line y = x + 4.

Thus, Put the value of y in the main equation.

x² + (x + 4)² = 26.

Simplify the equation;

x² + x² + 16 + 8x = 26

2x² + 8x - 10  = 0

Divide the equation by 2.

x² + 4x - 5  = 0  

Part a: This shows that x co-ordinates of P and Q satisfy the equation x² + 4x - 5 = 0.

Part b: Now, do the factorization of x² + 4x - 5  = 0.

(x + 5)(x - 1) = 0

x = -5 and 1.

For x = -5; y = -1

Point P = (-5, -1)

For x = 1; y = 5

Point Q = (1, 5)

Thus, the requires points P and Q are obtained.

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10 combinations of two parts can be selected.

Combination is defined as the number of arrangements in a collection of items where the order of selection does not matter.

denoted by C(n,x)= ⁿcₓ=[tex]\frac{n!}{(x!)(n-x)!}[/tex]  ,

where n is the total number of elements in the set.

x is the number of selected objects.

According to the Question

Total number of elements = 5 = n

Number of objects to be selected = 2 = x

Substituting the values in the above formula

C(5,2)=[tex]\frac{5!}{2!*3!}[/tex]

[tex]=\frac{5*4*3!}{2*3!} \\ \\ =\frac{20}{2} \\ \\ =10[/tex]

Therefore , 10 combinations of two parts can be selected.

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Answer:

989

Step-by-step explanation:

Answer:

986

The image after a dilation with a scale factor of 3 is A(-6, -3), B(0, 3), and C(3, -9) of triangle ABC.

Here, the coordinates are,

D = (-2, -1)

E = (0 , 1)

F = (1, -3)

After dilating triangle DEF using a scale factor of 3 and a center of dilation at the origin to form triangle ABC.

A = (-2 x 3, -1 x 3) = (-6, -3)

B = (0 x 3, 1 x 3) = (0, 3)

C = (1 x 3, -3 x 3) = (3, -9)

Line segments,

AB = 8.48

BC = 12.36

CD = 10.81

Therefore, after dilation by using a scale factor of 3 is  A(-6, -3), B(0, 3), and C(3, -9).

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If there are two independent variables that are measured and one dependent variable that is measured, then the multiple regression method will use

Given,

The conditions

We know

In multiple regression method the dependent variables are predicted by using the known independent variables. This method is usually used to analyze the relationship between multiple independent variables and one independent variables,

So here multiple regression method is using.

Hence, if there are two independent variables that are measured and one dependent variable that is measured, then the multiple regression method will use

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The value not in the solution is x = -10.2

The inequality expression is given as:

-4x - 6.8<34

Add 6.8 to both sides of the inequality

So, we have:

-4x < 40.8

Divide both sides by -4

x > -10.2

This means that only values greater than -10.2 are in the solution set

Hence, the value not in the solution is x = -10.2

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The measure of the angle the minute hand traces in 36 minutes is 3.77 radians

From the question, we are to determine the measure of the angle the minute hand traces in 36 minutes

The minute hand makes a complete rotation after 60 minutes.

Thus,

The angle the minute hand would have traced in 36 minutes is

36/60 × 360°

= 12960/60

= 216°

Now, convert to radians

216° = 216 × π/180 rad

= 3.77 rad

Hence, the measure of the angle the minute hand traces in 36 minutes is 3.77 radians

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A) Variance = 10.24

B) Standard Deviation = 3.2

One of the measurements of dispersion is the standard deviation, which is exclusively used for quantitative data. It aids in determining if the data's mean is a suitable measurement to reflect the core value.

TIME         FREQUENCY(f)  MIDPOINT(x)    d    d²     fd              fd²

0 - 0.9         43                          0.45             -3     9     -129            387

1.0 - 1.9         17                           1.45              -2    4     -34                68

2.0 - 2.9       19                            2.45             -1     1       -19               19

3.0 - 3.9        18                            3.45             0     0       0                  0

4.0 - 4.9        14                            4.45              1      1        14               14

5.0 -5.9         16                            5.45              2     4        32             64                            

∑f = 127                                                              

∑fd = -136  

∑fd² = 552

[tex]d = \frac{x - 3.45}{1}[/tex]

Standard Deviation = [tex]\sqrt \frac{fd^{2} }{N} - \sqrt \frac{(fd)^{2} }{N} * i[/tex]

[tex]\sqrt \frac{552}{127} -\sqrt (\frac{-136}{127})^{2} * 1[/tex]

√4.35 - √1.15

Standard Deviation = 3.2

(SD)² = (3.2)² = 10.24

Variance = 10.24

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Answer:

price of oranges is 6.63

Step-by-step explanation:

1)59.53-6.49=53.04

2) 53.04/8=6.63

Answer:

The set of all whole numbers

Step-by-step explanation:

Real numbers, integers, and rational numbers can all contain negative numbers. Whole numbers include numbers from 0 and up.

Hope this helps!

Have a nice day

Answer:

[-3,∞)

Step-by-step explanation:

Since x is on the left side and is greater than -3, we will use a bracket in front of the -3. Since we do not know when the interval ends, we finish it with a positive infinity because we know that x is GREATER than (or equal) to -3. If it were less than -3, it would be negative infinity. Similarly, we use a rounded bracket because infinity is a positive value greater than -3.

It can be seen that the mistake that was made by Marvin was on line 1.

2x² - 8x + 5.... move the 5 to the other side

2x² - 8x = -5

Now divide by 2

x² - 4x = -5/2

x² - 4x + 4 = -5/2 + 4

(x - 2)² = -5/2 + 8/2

(x - 2)² = 3/2

x - 2 = (+-)sqrt 3/2

x = 2 + sqrt 3/2 or x = 2 - sqrt 3/2

Therefore, he made his mistake on line 1.

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Marvin was completing the square, and his work is shown below. Identify the line where he made his mistake. f(x) = 2x2 − 8x + 5. Line 1: f(x) = 2(x^2 − 8x) + 5 Line 2: f(x) = 2(x^2 − 8x + 16) + 5 − 32 Line 3: f(x) = 2(x − 4)^2 − 27

Answer:

π/2 and ³√4

also -4.8237 and π/2

Step-by-step explanation:

number 2 and 4 are automatically out since every integer is a rational number.

√25 = 5 and 5 + 4 = 9, 9 can be expressed as 9/1 which falls under rational numbers.

π/2 on the other hand is not rational same goes for -4.8237 and ³√4 because these numbers cannot be written as a fraction with integers.

for the above numbers π/4 and ³√9 are irrational.

Answer:

The product is rational.

Step-by-step explanation:

The expression is simplified to 6√5 - 4√7

From the information given, we have that;

[tex]3\sqrt{5} - 2\sqrt{7} + \sqrt{45} - \sqrt{28}[/tex]

Let's find the surd forms with perfect squares and add into the formula

3√5 - 2√7 + √9 ×5 - √7× 4

Find the perfect squares of the expression

3√5 -  2√7 + 3√5 - 2√7

collect like terms

3√5 + 3√5 - 2√7 -  2√7

Add like terms

6√5 - 4√7

Thus, the expression is simplified to 6√5 - 4√7

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Answer:

b=8

Step-by-step explanation:

-4b + 5 = -27

Move the 5 to the right side by subtraction, subtract five from the right side as well.

Now you should have:
-4b = -32

Now divide by -4 to get ‘b’ isolated, do this on both sides.

You should be left with:
b=8

Answer: your answer would be unimodal skewed. This graph only has one maxima, thus it can't be bimodal. However, it's not symmetric, meaning that it is skewed

Hope this helps you

Step-by-step explanation:

The histogram is solved and it is uni-modal skewed

A graph called a histogram is used to show the frequency distribution of a small number of data points for a single variable.

A histogram displays the frequency distribution of a set of continuous data. It is useful for visualizing the shape of the data distribution, such as whether it is symmetrical or skewed, and identifying any outliers or gaps in the data.

Given data ,

Let the histogram be represented as A

Now , the value of A is plotted on the graph

A. Unimodal skewed: This distribution has one peak (mode) and the tail of the distribution extends to one side. Depending on which side the tail is longer, it can be either positively skewed (tail extends to the right) or negatively skewed (tail extends to the left).

B. Bimodal symmetric: This distribution has two distinct peaks (modes) and is symmetric, meaning the left and right sides of the distribution are roughly mirror images of each other.

C. Unimodal symmetric: This distribution has one peak (mode) and is roughly symmetric, meaning the left and right sides of the distribution are roughly mirror images of each other.

D. Bimodal skewed: This distribution has two distinct peaks (modes) and the tail of the distribution extends to one side for each peak. Depending on which side each tail is longer, it can be either positively skewed (tail of one peak extends to the right and the other to the left) or negatively skewed (tail of one peak extends to the left and the other to the right).

E. Uniform: This distribution is flat and has roughly equal frequency for all values in the range of the dataset.

Hence , the histogram is unimodal skewed

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Answer:

Step-by-step explanation:

its 6 2 + 5 = 9-2 = 6

Answer:

let y=0

3x+6(0)=18

3x=18

x=6

(6;0)

Answer: 3

Step-by-step explanation: If you solve the equation, like I did in the attached image, you will see that the x-intercept is 3.