22222222222222222222222222222+22222222222222222

Answer:

(x+1) (x-1)

Step-by-step explanation:

rewrite 1 as 1^2

Apply diffrence of two squares formula

x^2-y^2= (x+y)(x-y)

x^2-1^2= (x+1) (x-1)

Step-by-step explanation:

JOIN MY MEETING

ID-9384026088

PASSWORD 1234

Answer:

C

Step-by-step explanation:

The regression equation for the given sample observations is Y = 12.071 - 1.087X.

By analyzing the given sample observations, we can determine the regression equation that represents the relationship between the variables X and Y.

The regression equation is derived through statistical analysis and allows us to estimate the value of Y based on the given values of X. In this case, the regression equation is Y = 12.071 - 1.087X.

This equation indicates that for every unit increase in X, the value of Y decreases by 1.087 units.

To determine the regression equation, statistical techniques such as linear regression are applied to find the best-fitting line that represents the relationship between the variables.

The coefficients in the equation, 12.071 and -1.087, represent the intercept and slope of the line, respectively.

They provide insights into the relationship and can be used to make predictions or analyze the impact of changes in X on the value of Y.

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Answer:Graph the parabola using the direction, vertex, focus, and axis of symmetry.

Direction: Opens Up

Vertex:  

(

5

,

1

)

Focus:  

(

5

,

9

8

)

Axis of Symmetry:  

x

=

5

Directrix:  

y

=

7

8

x

y

3

9

4

3

5

1

6

3

7

9  

The answer is 18.84 because pie times the radius squared is 18.84

Answer:

18.84

Step-by-step explanation:

first you  mulitiply 3.14 by two then you mulitiply what you get by 3cm

a) -3x + 7y = 28 -4x + 3y = 12

7y - 28 = 3x

x = (7y - 28)/3

Substitution

-4(7y - 28)/3 + 3y = 12

-4(7y - 28)/3 = 12 - 3y

-4(7y - 28) = 3(12 - 3y)

-28y + 112 = 36 - 9y

112 - 36 = 28y - 9y

76 = 19y

y = 76/19

y = 4

x = [(7*4) - 28)]/3

x = [28 - 28]/3

x = 0/3

x = 0 Result x = 0, y = 4

b) x + 3y = -7 -7x - 4y = -19

x = -7 - 3y

Substitution

-7(-7 - 3y) - 4y = -19

49 + 21y - 4y = -19

17y = -19 - 49

17y = -68

y = -68/17

y = -4

x = -7 - 3(-4)

x = -7 + 12

x = 4 Result x = 4, y = -4

c) 3x + 2y = 4 6x - 3y = -27

x = (4 - 2y)/3

Substitution

6(4 - 2y)/3 - 3y = -27

6(4 - 2y)/3 = -27 + 3y

6(4 - 2y) = 3(-27 + 3y)

24 - 12y = -81 + 9y

-12y - 9y = -81 - 24

-21y = -105

y = -105/-21

y = 5

x = (4 - 2(5))/3

x = (4 - 10)/3

x = -6/3

x = -2 Result x = -2, y = 5

d) It is not complete

e) -x + 4y = -5 x - 6y = 7

x = 7 + 6y

-(7 + 6y) + 4y = -5

-7 - 6y + 4y = -5

-6y + 4y = -5 + 7

-2y = 2

y = 2/-2

y = -1

x = 7 + 6(-1)

x = 7 - 6

x = 1 Result x = 1, y = -1

Answer:

-4x³ + 4xy

Step-by-step explanation:

distribute -4x by 'x²' and '-y'

-4x(x²) = -4x³

-4x(-y) = 4xy

Answer:

-4x^3+4xy

Step-by-step explanation:

Distribute the -4xy

Answer:

x = 10

Step-by-step explanation:

Angle form is = 90°

therefore

5x + 25 + x + 5 = 90

6x + 30 = 90

6x = 90-30

6x = 60

6x/6 = 60/6

x = 10

Answer:

bottom left and top right

Step-by-step explanation:

The required highest common factor of 25, 75, and 150 is 25.

The highest common factor (HCF) of two or more numbers is the largest number that divides all of the numbers exactly.

To find the HCF of 25, 75, and 150, we can first find the prime factorization of each number and then look for the common factors.

Prime factorization of 25,  25 = 5²

Prime factorization of 75:, 75 =  5² × 3

Prime factorization of 150,  150 = 2 × 3² × 5²

The largest factor that all three numbers have in common is 5², which is 25.

So, the HCF of 25, 75, and 150 is 25.

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Answer:

f(x) + g(x) = x + 20

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

f(x) = 6x - 4

g(x) = -5x + 24

Step 2: Find f(x) + g(x)

Answer

Write a multi-paragraph, informational essay explaining how and why linguists are preserving native languages on the verge of extinction. Manage your time carefully so that you can plan your essay and do some prewriting type your essay Be sure to use evidence from both texts avoid over-relying solely on one text Your response should be in the form of a multi-paragraph informational essay.

Answer:

3 cookies

Step-by-step explanation:

you have 36 cookies and want to put them in 12 bags, so you have to divide 36 by 12 that equals 3

The length of the QR is 16 cm when PQR ~MNO

In the given question, it is given that two similar triangles as PQR ~MNO

Then, the corresponding sides will be in equal proportion to each other as follows

PQ / MN = PR / MO = QR / NO

We need to find the length of the side QR

As above relations are given,

\(\frac{PQ}{MN}\) = \(\frac{PR}{MO}\) = \(\frac{QR}{NO}\)

\(\frac{30}{10}\) = \(\frac{5x + 7}{x+5}\) = \(\frac{4x}{\frac{16}{3} }\)

Equating all the fractions, equal to each we'll find

\(\frac{5x + 7}{x+5}\) = \(\frac{30}{10}\)

5x + 7 = 3(x +5)

5x + 7 = 3x + 15

2x = 8

x = 4

We know that, the length of the QR = 4x cm = 4 x 4 cm = 16 cm

Therefore, the length of the QR is 16 cm when PQR ~MNO

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The method applied for determining the density of a solid (regular and irregular) and a liquid is based on the concept of mass and volume.

For solids (regular and irregular):

Determining the mass: The mass of the solid can be measured using a balance or scale. The unit of mass is typically grams (g) or kilograms (kg).

Determining the volume:

Regular solids: The volume of regular solids, such as cubes or rectangular prisms, can be calculated using their geometric formulas. For example, the volume of a cube is calculated by cubing the length of one of its sides: Volume = side length^3.

Irregular solids: The volume of irregular solids can be determined using various methods such as water displacement. The solid is immersed in a known volume of liquid (e.g., water), and the increase in the volume of the liquid is measured. This increase represents the volume of the solid.

Calculating the density: The density of a solid is calculated by dividing its mass by its volume. The unit of density is typically grams per cubic centimeter (g/cm^3) or kilograms per cubic meter (kg/m^3).

For liquids:

Determining the mass: Similar to solids, the mass of the liquid can be measured using a balance or scale.

Determining the volume: The volume of a liquid can be measured directly using a graduated cylinder or other volumetric measuring devices. The unit of volume is typically milliliters (mL) or liters (L).

Calculating the density: The density of a liquid is calculated by dividing its mass by its volume. The unit of density is typically grams per milliliter (g/mL) or kilograms per liter (kg/L).

The method for determining the density of a solid (regular and irregular) involves measuring the mass and volume of the solid and calculating the density by dividing the mass by the volume. For liquids, the density is determined similarly by measuring the mass and volume.

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The appropriate conclusion is that the test would also be rejected at the level α=0.10, but we cannot make a decision for other significance levels.

If I conduct a statistical test of hypotheses and find that the null hypothesis is statistically significant (or simply is rejected) at the significance level α=0.05, the appropriate conclusion is that:Option (c) the test would also be rejected at the level α=0.10.However, we can not conclude that the test would also be rejected at other significance levels, for example, we can not make a decision for other significance levels.The null hypothesis (H0) is rejected if the probability of observing a value as extreme as that calculated from the sample data is very low, that is, less than or equal to the chosen level of significance (alpha).We choose a significance level before conducting the test, which is the level of risk that we are willing to accept when rejecting the null hypothesis.In this case, the null hypothesis is rejected at a significance level of 0.05, and it means that there is strong evidence against the null hypothesis, so we reject it and accept the alternative hypothesis. This decision only applies to this significance level and not to others.Therefore, the appropriate conclusion is that the test would also be rejected at the level α=0.10, but we cannot make a decision for other significance levels.

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A- The maximum vertical distance from the water surface to the diver’s

shoulders are 12.061 meters.

B- The time that the diver’s shoulders enter the water is 1.936 seconds.

C- The total distance traveled by the diver’s shoulders from the time

she leaps from the platform until the time her shoulders enter the water is 12.946 meters.

D- The angle, θ between the path of the diver and the water at the instant the diver’s shoulders enter the water is 1.519.

A-  

\(\frac{dy}{dx} =0\) only when \(t=0.36735\). Let \(b=0.36735\)

The maximum vertical distance from the water surface to the diver’s

shoulders is y(b)=11.4 + \(\int\limits^b_0 \frac{dy}{dT} dt = 12.061\) meters.

B-

\(y(A)=11.4+\int\limits^A_0 \frac{dy}{dt} dt = 11.4+3.6A- 4.9A^{2} =0\)

when A= 1.936 seconds.

C-

\(\int\limits^A_0 {\sqrt{(\frac{dx}{dt} )^{2} + (\frac{dy}{dt} )^{2} } } \, dt = 12.946 m\)

At time A, dy/dx = \(\frac{dy/dt}{dx/dt} | _{t=A} = -19.21913\)

D- The angle between the path of the diver and the water is \(tan^{-1} (19.21913) = 1.518 or 1.519\)

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Answer:

301.7 cm

Step-by-step explanation:

Given,

Height of cone (h)=8cm

base radius (r)=6cm

Volume of the cone (V)=

3

1

πr

2

h

=

3

1

×

7

22

×6×6×8

=

7

2112

=301.7cm

3

Hence, volume of the cone =301.7cm

3

Answer:

402.1402.1 cm

Step-by-step explanation

height = 6cm

Radius= 8cm

Answer:

80

Step-by-step explanation:

I did this quiz and got the answer

Answer: b 1:4

Step-by-step explanation:

Answer:

The given expression 15:60 can be simplified by dividing both the numerator and denominator by their greatest common factor (GCF), which is 15 in this case. So, 15 divided by 15 is 1 and 60 divided by 15 is 4. Therefore, the simplified form of 15:60 is 1:4. 

So, the answer is (b) 1:4.

Step 1

Given;

Required; To determine where 1 banana went if 29 bananas are accounted for.

Step 2

Here is the break down; the balance should be like this;

Hence, there is no extra 1 banana, The monkeys spent 27 bananas of which the bellboy took 2 bananas and 25 bananas went to the room, and 3 bananas where returned to them. A total of 30 bananas

Answer:

Step-by-step explanation:

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Answer:

Step-by-step explanation:

The value of 2s in 43,290 is 2,000, while the value of 2s in 32,865 is 20.

B. 200 is 1/20 the value of 2,000.

This statement is correct, as 200 is 1/10 of 2,000, and there are two 0s in the value of 2s in 43,290 compared to one 0 in the value of 2s in 32,865.

Answer:

  (c)  20%

Step-by-step explanation:

You want the percent error in an estimate of 240, when the actual count was 200.

The percent error can be found by ...

  error = (estimate/actual -1) × 100%

  error = (240/200 -1) × 100%

  error = (1.2 -1) × 100% = 20%

The error in the estimate was 20%.

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The measure of angle x is given as follows:

x = 48º.

The three trigonometric ratios are the sine, the cosine and the tangent of an angle, and they are obtained according to the formulas presented as follows:

For angle x, we have that:

Hence we apply the sine ratio to obtain the measure of x as follows:

sin(x) = 7/9.4

x = arcsin(7/9.4)

x = 48º.

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Answer:xxxxxxxxx

ggggggggxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Step-by-step explanation:

The normal distribution with a mean of 76 and a standard deviation of 6 describes the grades on a business statistics exam. The proportion of students scoring between 90 and above (A) and 60 and below (F) is 0.0136, which falls within the interval of 0.0000 to 0.0999.

In the given context, the normal distribution refers to the statistical distribution that adequately describes the grades on a business statistics exam. It is assumed that the grades follow a normal distribution with a mean of 76 and a standard deviation of 6.

The normal distribution, also known as the Gaussian distribution or bell curve, is a continuous probability distribution characterized by a symmetric bell-shaped curve. It is widely used in statistics and probability theory due to its mathematical properties and its applicability to many real-world phenomena.

The formula for standardizing a normal variable Z is:

Z=frac{x-mu}{sigma}, where x is the raw score, μ is the mean, and σ is the standard deviation.

The proportion of grades who scored an A (90 and above) and F (60 and below) can be calculated as follows:

First, we will find the Z-score of grade 90:

Z=frac{x-mu}{sigma}=frac{90-76}{6}=2.33.

Now, we need to find the proportion of students who scored 90 and above:

P(Zge2.33)=0.0099.

Therefore, a 0.0099 proportion of students scored 90 and above.

Next, we will find the Z-score of grade 60:

Z=frac{x-mu}{sigma}=frac{60-76}{6}=-2.67.

Now, we need to find the proportion of students who scored 60 and below:

P(Zle-2.67)=0.0037.

Therefore, 0.0037 proportion of students scored 60 and below.

The proportion of students who scored between A (90 and above) and F (60 and below) is $0.0099 + 0.0037 = 0.0136.

Therefore, the professor will be assigning the proportion of 0.0136.

The interval that contains this proportion is option iii) 0.0000 to 0.0999.

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Answer:

iuebyefyurbfuyrfbofrvfeybyrvfewqybqwyboiwqebfiwuqefbiwuqefbipuwqefbipuwqefbpiuwqef

Step-by-step explanation:

Answer:

3x4=12

12+6=18

Step-by-step explanation: