HELP PLEASE DONT IGNORE

The length of DE is 12 unit.

The area of mathematics that deals with particular angles' functions and how to use those functions in calculations. There are six popular trigonometric functions for an angle. Sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant are their respective names and acronyms (csc).

Given:

In Triangle DFC using Trigonometry

sin 45 = B/ H

1/ √2 = DF / 12√2

DF = 12 unit

So, DE= DF + FE

DE = 12 + 9

DE = 12 unit.

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In a histogram, the width of the bars represents the range of values that fall into each specific category or bin. The spacing between the bars has no meaning in terms of the data being represented.

The ordering of the bars is based on the range of values within each bin, with the bars typically ordered from left to right in ascending order of value.

This is different from a bar graph, where the width and spacing of the bars can have meaning in terms of the comparison of the values being represented. For example, if the width of the bars in a bar graph represents the value of a data point, then a wider bar would indicate a higher value.

The spacing between the bars in a bar graph can also be used to show the relative difference between values. In a bar graph, the ordering of the bars may or may not have meaning, depending on the specific context and the purpose of the graph.

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Answer:

Side AB congruent to side DE

( being the side joining two congruent angles)

Answer:

Question number 8 u place the number 1 line before -1 on the left.

Step-by-step explanation:

cuhcuhcuhcuchcuhcuhc

Answer/Step-by-step explanation:

The first equation is confusing so I'll solve both ways:

Addition

1. -4x + 2y = -12

   4x + 8y = -24

-----------------------------

            10y = -36

          ÷10      ÷10

        --------------------

              y = -3.6

4x + 8y = -24

4x + 8(-3.6) = -24

4x - 28.8 = -24

     +28.8    +28.8

-----------------------------

      4x = 4.8

    ÷4     ÷4

---------------------

   x = 1.2

If the first equation is subtraction this is the solution:

2. -4x - 2y = -12

   4x + 8y = -24

 ------------------------

            6y = -36

           ÷6      ÷6

         -------------------

                y = -6

4x + 8y = -24

4x + 8(-6) = -24

4x - 48 = -24

     +48    +48

---------------------

4x = 24

÷4   ÷4

-----------------

x = 6

(6, -6)

I hope this helps!

Answer:

Step-by-step explanation:

Notice that ∠5 is an internal angle, because it's between the parallels.

∠1  and ∠5 are corresponding angles, becasue they are at the same side of the transveral, and one is internal and the other external. So, ∠1 = 62°.

∠2 and ∠1 are supplementary angles, because they are on a straight angle, so if ∠1 = 62°, then ∠2 = 180° - 62° = 118°.

∠3 and ∠1 are vertical angles, because they have a vertex in common only. So, they are congruent, which means ∠3 = 62°.

Finally, ∠4 and ∠2 are vertical angles, so they are congruent. ∠4 = 118°.

Answer:

they are the same

Step-by-step explanation:

as you said, they both weigh a ton, there would just be more feathers and less bricks

The probability distribution of random variable x is

a) 1.78 is the anticipated value of x;

b) The variance of x is 0.6484.

(a) The expected value of x can be found using the formula:

\(E(x) = Σ[x * f(x)]\)

where x's potential values are all added up.

Using the given probability distribution, we have:

\(E(x) = (0 * 0.27) + (1 * 0.35) + (2 * 0.05) + (3 * 0.25) + (4 * 0.08)\)

\(E(x) = 1.78\)

As a result, 1.78 is the expected value of x.

(b) The variance of x can be found using the formula:

\(Var(x) = E(x^2) - [E(x)]^2\)

where E(x) represents the anticipated value of x and E(x2) represents the expected value of x2.

To find E(x^2), we can use the formula:

\(E(x^2) = Σ[x^2 * f(x)]\)

Using the given probability distribution, we have:

\(E(x^2) = (0^2 * 0.27) + (1^2 * 0.35) + (2^2 * 0.05) + (3^2 * 0.25) + (4^2 * 0.08)\)

\(E(x^2) = 3.33\)

Consequently, the variation of x is:

\(Var(x) = E(x^2) - [E(x)]^2\)

\(var(x) = 3.33 - (1.78)^2\)

\(var(x) = 0.6484\) (rounded to four decimal places)

x's variance is 0.6484

As a result, x's variance is 0.6484.

1.78 is the anticipated value of x

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End behavior refers to graph of a polynomial function at the extreme ends, as the values approach positive or negative infinity. In other words, it says the behavior of the graph as the x-values get very large or very small.

To find the end behavior of a polynomial function, you can look at the degree (or highest power) of the polynomial, as well as the sign of the leading coefficient. The degree of a polynomial is the highest power of x in the polynomial, and the leading coefficient is the coefficient of the term with the highest power of x.

Here are some guidelines for finding the end behavior based on the degree and leading coefficient of the polynomial:

For example, consider the polynomial function f(x) = -3x^4 + 2x^3 + 5x - 1. The degree of the polynomial is 4, and the leading coefficient is -3. Since the degree is even and the leading coefficient is negative, we know that the end behavior will be the same on both sides of the graph, and the graph will approach negative infinity on both ends.

By knowing the end behavior, we can sketch the general shape of the graph of a polynomial function, without having to plot many points. This can be helpful when analyzing or comparing polynomial functions.

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Data were collected for 1 quantitative variable(s). yes, It is appropriate to say that a stem and leaf plot for this type of data. The stem and leaf plot has right skewed shape curve.

From the above data that were collected for one quantitative variable. Yes, it is appropriate to say that to make a stem and leaf for this type of data and number of variables.

Stems               |         Leaves

    5                   |     2, 6, 1, 2, 4, 8, 0, 9, 7

     6                  |       7, 7, 5, 2, 0, 5, 8 , 8

     7                  |          8,    4,   7,   1 and   8

     8                  |             9   , 4,    8

      9                 |                8,    9

Also, the shape of the stem and leaf plot is right skewed curve.

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We have inequality. So, we have to take a test point (0,0) and as the statement is true therefore Graph will shade towards the test point (0,0).

2(0)+3(0) ≤ 30 => 0≤ 30

An inequality in mathematics depicts the connection between two values in an algebraic statement that are not equal. One of the two variables on the two sides of the inequality may be greater than, greater than or equal to, less than, or less than or equal to another value, according to inequality signals.

A family of 3 children and 2 adults visited a health club. The club charges $y an hour for each child and $x an hour for each adult.

First we make inequality according to question.

In a family number of children 3

Charge for 1 child = $y per hour

Charge for 3 children = 3y

Charge for 1 Adult = $x per hour

Charge for 2 adults = 2x

If the family does not want to spend more than $30 an hour at health club.

2x+3y≤30

Where, x and y should be greater than 0.

x≥0 and y ≥0

Now we make the graph of this inequality.

First we take equality of equation and then find x and y table.

2x+3y=30

x        y

0        10

6        6

15      0

Here we have inequality. So, we have to take a test point (0,0)

2(0)+3(0) ≤ 30 => 0≤ 30

This statement is true. So, Graph will shade towards the test point (0,0)

Please see the attachment for graph:

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A. The equations for the amounts of money Lyle and Shaun have in their accounts are represented as:

f(x) = 20x + 100

g(x) = 10x + 500

B. When f(x) = g(x), x = 40.

A linear equation can be written in slope-intercept form y = mx + b. Here, the value of m is the unit rate or slope, while the value of b is its y-intercept or initial value.

Part A:

Equation for Lyle:

y-intercept / initial value (b) = $100

Slope / unit rate (m) = $20

To write the equation, substitute m = 20 and b = 100 into f(x) = mx + b:

f(x) = 20x + 100.

Equation for Lyle:

y-intercept / initial value (b) = $500

Slope / unit rate (m) = $10

To write the equation, substitute m = 10 and b = 500 into g(x) = mx + b:

g(x) = 10x + 500.

Part B: To solve the system, we would do the following:

20x + 100 = 10x + 500

20x - 10x = -100 + 500

10x = 400

x = 400/10

x = 40

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Answer:

3.65

Step-by-step explanation:

this is the same as saying

50%of 7.3

which is 3.65

Answer:

can't see the question ⁉️

Using the distance formula, the length of bc is found to be 2a, while the length of de simplifies to a. Therefore, bc is twice de, proving that de is half the length of bc.


The distance formula calculates the distance between two points in a Cartesian coordinate system. By applying this formula to the points involved in the problem, we can determine the lengths of bc and de. Using the coordinates given, we find that the length of bc is equal to 2a.

By substituting the coordinates of points d and e into the distance formula, we find that the length of de simplifies to a. Comparing the two lengths, we see that bc is twice the length of de, demonstrating that de is half the length of bc. This proof relies on the properties of midpoints, which divide a line segment into two equal parts, leading to the proportional relationship between bc and de.

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By applying Pythagoras' theorem, the length of x is equal to 10 units.

In Mathematics and Geometry, Pythagorean's theorem is modeled or represented by the following mathematical equation (formula):

x² + y² = z²

Where:

x, y, and z represents the length of sides or side lengths of any right-angled triangle.

Based on the information provided about the side lengths of this right-angled triangle, we have the following equation:

x² = y² + z²

x² = 8² + 6²

x² = 64 + 36

x = √100

x = 10 units.

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Answer:

14)37

15)16

16)38

17)C

Step-by-step explanation:

14)7*4+9=28+9=37

15)42/7+10=6+10=16

16)-5*(-6)+8=30+8=38

The inequality to represent this situation is (11x+300)≤650

An inequality is a relation which makes a non-equal comparison between two numbers or mathematical expressions.

Here, given that,

The school marching band has a budget of up to $650.00 to cover 11 new uniforms.

and competition fees that total $300.00.

Let, the cost of each new uniform = $x

Then cost for 11 uniforms = $11x

i.e. total cost = $ (11x + 300)

hence, we get,

$(11x+300)≤$650

(11x+300)≤650

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Answer:

-20

Step-by-step explanation:

14 - (9 + 8)2

Open bracket

14 - (17)2

14 - 17×2

14 - 34

= -20

Answer:

1st one jus did this

Step-by-step explanation:

easy

Answer: About 2.1 years

Step-by-step explanation:

768/365 = 2.10

Answer: Roughly 2 year

Exact answer: 2.104109589041096

Step-by-step explanation:

The Endogenous variables are variables that are correlated with the error term in a regression model.The statement is true.

the error term represents the unobserved factors that affect the dependent variable, and endogenous variables are those that are influenced by these unobserved factors.

In regression analysis, the error term is assumed to be uncorrelated with the independent variables. However, if there is correlation between the error term and any of the independent variables, those variables are considered endogenous. This can lead to biased and inconsistent estimation results.

To address endogeneity, various methods can be employed, such as instrumental variable regression, two-stage least squares regression, or fixed effects regression.

These techniques aim to control for the correlation between the endogenous variables and the error term, allowing for more reliable estimates of the relationship between the independent variables and the dependent variable.

In summary, endogenous variables are indeed correlated with the error term in a regression model, making it necessary to address endogeneity to obtain accurate and reliable results.

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Answer:

use graphs

Step-by-step explanation:

Another way to identify the domain and range of functions is by using graphs. Because the domain refers to the set of possible input values, the domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis.

Analysis of variance (ANOVA) is a statistical method of comparing the means of several populations.

ANOVA is used when there are three or more groups or populations that need to be compared. It determines whether there are any statistically significant differences among the means of these groups. The method analyzes the variation within each group as well as the variation between the groups to assess whether the differences observed are due to random chance or if there are true differences in the population means.

The primary goal of ANOVA is to test the null hypothesis that the population means are equal across all groups. If the null hypothesis is rejected, it indicates that at least one group significantly differs from the others.

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Students raised $225 in the first week and $90 in the second week.

Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".

Given that, a student club has a goal to raise $750 to buy new books for a library.

In the first week, the club raised 30% of its goal.

Now, 30% of 750

= 30/100 ×750

= 3×75

= $225

In the second week, the club raised 12% of its goal.

Now, 12% of 750

= 12/100 ×750

= 0.12×750

= $90

Hence, students raised $225 in the first week and $90 in the second week.

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Answer:

8 hours shift because you count from 7 am to 3pm

The total number of hours between the 7 am and 3 pm shift is 8 hours.

What is meant by the hour?

Depending on the speed of the Earth's rotation, an hour is a measure of time that is traditionally calculated as 1/24  of a day and scientifically estimated to last between 3,599 and 3,601 seconds. There are 24 hours in a day and 60 minutes in an hour.

The 24-hour day is divided into two sections, a.m. and p.m., according to the 12-hour clock time convention. Latin terminology for the hours of the day, AM and PM, are commonly employed. The abbreviations AM and PM stand for Ante meridiem and Post meridiem, respectively, which indicate before noon or midday and afternoon or midday. AM is used to denote the first 12-hour period, which runs from midnight to noon, and PM is used to denote the following 12-hour period, which runs from noon to midnight.

From 7 am to 12 pm, the number of hours = 5

From 12 pm to 3 pm, the number of hours = 3

Therefore the total number of hours between the 7 am and 3 pm shift is (3+5) = 8 hours.

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The rate of change in altitude of the plane during the time is 625 ft/min.

Given the Parameters:

Altitude at 2.40 pm = 30000 feets

Altitude at 2.48 pm = 25000 feets

Rate of change = change in altitude/change in time

change in time = 2.48 - 2.40 = 8 minutes

change in altitude = 30000 - 25000 = 5000 feets

Rate of change = 5000/8 = 625 feets per minute

Therefore, the rate of change in altitude of the plane is 625 ft/min.

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Answer:

0.8

Step-by-step explanation:

E is .5 units from 0 and 0 is .3 units from w. .5+.3=.8 units