CANNNN SOMEBODY HELP I DONT KNOW THIS STUFF PLZZZZZZZ HELPPP ASAPPPP REWARD BRAINLIESTT AND STARSSS

The determinant of an upper triangular matrix must be the product of its diagonal entries.
An upper triangular matrix is a square matrix where all the entries below the diagonal are zero.

The determinant of a matrix is the scaling factor of the area/volume of the parallelogram/parallelepiped spanned by the rows/columns of a matrix.

The product of the diagonal entries represents the scaling factor of the area/volume of the parallelogram/parallelepiped spanned by the rows/columns of an upper triangular matrix.

The determinant of a matrix is the scaling factor.

Therefore, the determinant of an upper triangular matrix must be the product of its diagonal entries.

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#6 is 210

Step-by-step explanation:

Just rememder that the circles are 360 degrees

Answer:

57

Step-by-step explanation:

Subtract one player from the total number, because one has to block.

19

Multiply this by the number of goalies there are.

19*3=57

There will be 57 kicks.

Answer:

  plot two points and draw a line through them

Step-by-step explanation:

The graph is created for this the same way it is for any function: find some points on the graph, plot them, and draw an appropriate curve through them.

Since this is a linear equation, the graph is a straight line. Only two points are needed to allow you to plot the entire line.

For b=0, the point is (b, C) = (0, 4.95)

For b=5, the point is (b, C) = (5, 24.90)

The graph might look like the attached.

_____

For b=5, the equation gives ...

  C = 4.95 +3.99(5) = 4.95 +19.95 = 24.90

The area covered by 80 meters of fencing will be 509.30 square meters.

The space occupied by any two-dimensional figure in a plane is called the area. The space occupied by the circle in a two-dimensional plane is called the area of the circle.

Given that the last customer of the day calls telling you they purchased 80 meters of fencing to fence in a circular area around their flagpole.

Calculate the radius of the circle,

C = 2πr

80 = 2πr

r = 40 / π meters

The area of the circle is,

A = πr²

A = π x ( 40 / π )²

A = 1600 / π

A = 509.3 square meters

Therefore, the area will be 509.30 square meters.

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The dominant strategy of Farmer Jones is to buy 10 cows.

To determine the dominant strategy of Farmer Jones, we need to compare the outcomes of his two options:

buying either 10 cows or 20 cows.

Let's analyze the potential outcomes for each case:

Buying 10 cows:

If Farmer Smith buys 10 cows:  

The total number of cows in the field would be 30, resulting in each cow producing $3000 of milk.

If Farmer Smith buys 20 cows:

The total number of cows in the field would be 40, causing each cow to produce $2000 of milk.

Buying 20 cows:

If Farmer Smith buys 10 cows:

The total number of cows in the field would be 40, causing each cow to produce $2000 of milk.

If Farmer Smith buys 20 cows:

The total number of cows in the field would be 50, resulting in each cow producing less than $2000 of milk (exact value unknown).

From the given information, we can observe that regardless of the strategy chosen by Farmer Smith, Farmer Jones is better off buying 10 cows.

In all scenarios, the milk production per cow is higher when Farmer Jones buys 10 cows compared to buying 20 cows.

Therefore, the dominant strategy for Farmer Jones is to buy 10 cows.

Formally, we can express this as follows:

For Farmer Jones, no matter the strategy chosen by Farmer Smith, buying 10 cows yields a higher milk production per cow compared to buying 20 cows.

Hence, Farmer Jones' dominant strategy is to buy 10 cows.

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The probability of selection of diagonal which is not shortest nor longest is 13/17.

We know very well that Icosagon has 20 sides.

If any diagonal is possible, it can be possible by connecting two points, so to choose r objects from n objects can be done by ⁿ \(C_{r}\) = \(\frac{n!}{r! (n-r)!}\)

So, number of ways to choose diagonal = \(^2^0C_{2}\)

After that we need to subtract 20 ways as single point can lead to diagonal making.

So, total number of ways to choose 20 diagonals =  170

Now, talking about the shorter diagonal

so, shorter diagonal =Diagonal connecting(A₁A₃, A₂A₄,.....) =20 diagonals.

Now, talking about longer diagonal=Diagonal connecting(A₁A₈,A₂A₉.........) = 20 diagonals

So, we have total chances of ⁿ \(C_{r}\) = \(\frac{n!}{r! (n-r)!}\) and possible number of chances of selection of shorter and longer diagonal

So, according to the formula,

Probability= Favorable outcome /Total outcome

Probability = [(Total ways to select diagonals - (Ways to select shorter diagonal) - Ways to select longer diagonal)]/(Total number of ways)

Probability = (170-20-20)/170

Probability = 130/170

Probability = 13/17

Hence, the probability of selecting a  diagonal such that it is not shortest nor longest is 13/17.

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The number of pheasants in 2012 was 1832. The number of pheasants in 2016 was 422. The minimum viable density is 100 pheasants per hectare.

So, we need to find out the year in which the population will fall below 100 pheasants per hectare.

First, we need to find out the rate of decline per year which can be calculated as follows: Rate of decline per year = (1832 - 422) / (2016 - 2012)= 1410 / 4= 352.5 per yearNow, let the number of pheasants per hectare be y after t years from 2012.

Then, y = 1832 - 352.5t (as we know the rate of decline per year)We need to find the year in which the population will fall below 100 pheasants per hectare. So, we need to solve the equation:1832 - 352.5t = 100⇒ 352.5t = 1732⇒ t = 1732 / 352.5⇒ t = 4.91 Therefore, the population will fall below the minimum viable density of 100 pheasants per hectare after 4.91 years from 2012, which is around 2017 or 2018.

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Answer:

10

Step-by-step explanation:

sqrt root (x2-x1)^2 + (y2-y1)^2

Answer:

11

Step-by-step explanation:

Applying change of base formula:

Step-by-step explanation:

l=1

b=3

h=3

l×b×h

9 is the vol

From the two functions function 2 has the highest maximum value.

Given two functions,one is y=-\(x^{2} -2x-2\) and f(-2)=1,f(-1)=6,f(0)=9,f(1)=10,f(2)=9,f(3)=6.

We ae required to choose a function which is having highest maximum possible value.

Function is like a relationship between two or more variables expressed in equal to form. Each value of x of a function has some value of y.

The highest value in the second function is 10 which is at x=1. Put the value of x=1 in y=-\(x^{2} -2x-2\).

y=-1-2-2

y=-5

So it might not be highest value of this function.So the second function has highest maximum value of 10 at x=1.

Hence the second function has highest value.

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Answer:

do you have the graph to solve it?

A linear equation giving the value of the equipment in terms of the time t is calculated to be v = 117000 - 16714.3t.

The value of the colour printer is 117000 $ and machine has no value after 7 years.

As it is given that the machine has no value after 7 years. That mean rate is decreasing every year. So, the decreasing rate is, 117000/7 = 16714.3.

Let us assume v is the value of the machine and t is the time. Then, the linear equation for the given problem is, v = 117000 - 16714.3t

Thus, the required linear equation is v = 117000 - 16714.3t.

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Answer:

I think the answer is d

Step-by-step explanation: you have to divide both sides by 6

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Answer:

Kelly is wrong and the recipe will make 19 cups of punch.

Step-by-step explanation:

It says:

The amount of ingredients in the recipe of punch after converting the units to 'cups' are given by,

Pineapple juice = 3 pints = 6 cups (1 pint ≈ 2 cups)

Orange juice = 5 cups

Lemonade = 1/4 gallon = 4 cups (1 gallon = 16 cups)

Apricot nectar = 1 quart = 4 cups(1 quart = 4 cups)

Then, the total cups of punch = 6 + 5 + 4 + 4 = 19 cups.

Thus, Kelly is wrong and the recipe will make 19 cups of punch.

The radius of the pool is 9.01 m.

Given,

In the question:

A circular pool is surrounded by a brick walkway 3 m wide.

The area of the walk- way is 198 m^2.

To find the Radius of the pool.

Now, According to the question:

"Area of the circle bounded by the outside edge of the walkway" minus "area of the pool" = "area of the walkway".

Let R = Radius of the pool

Area of the circle bounded by the outside edge of the walkway is:

\(\pi\)(R +3)^2

Area of the pool is:

\(\pi R^2\)

Now, Our equation is:;

\(\pi\)(R +3)^2 - \(\pi R^2\) = 198

\(\pi\)((R+3)^2 - \(R^2\)) = 198

Open the inner bracket :

\(\pi\)(\(R^2+6R+9-R^2\)) = 198

\(\pi\)(6R +9) = 198

6R+9 = 198/\(\pi\)

6R = 198/\(\pi\) - 9

R = (198/\(\pi\) - 9)/6

R = (198/(3.14) - 9)/6

R = (63.057 - 9)/6

R = 54.057/6

R = 9.01 meters

Hence, The radius of the pool is 9.01 m.

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The approximate amount of time period of a pendulum with a length of 12 feet is 1.85 seconds.

Calculus is a branch οf mathematics that deals with the study οf change and hοw things change οver time.

We can use the given equatiοn fοr the periοd οf a pendulum:

T = 2π√(L/32)

Substituting L = 12, we get:

T = 2π√(12/32)

Simplifying:

T ≈ 1.85 seconds

Hence, the approximate amount of time of the period of a pendulum with a length of 12 feet is 1.85 seconds.

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Answer:

least to greatest

|y-z|

|x-y|

|x-z|

z

Step-by-step explanation:

The table that have a constant of proportionality between y and x of 12 is the first table

From the question, we have the following parameters that can be used in our computation:

The table of values

From the first table of values, we have the following readings

(x, y) = (1/2, 6), (2, 24) and (10, 120)

Using the above as a guide, we have the following:

The constant of proportionality between y and x in the graph is

k = y/x

Substitute the known values in the above equation, so, we have the following representation

k = 6/(1/2) = 24/2 = 120/10

Evaluate

k = 12 = 12 = 12

Hence, the constant of proportionality between y and x in the first table is 12

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Complete question

Which table has a constant of proportionality between y and x of 12?

x          1/2               2             10

y           6                24          120

x          1/4               3             12

y           3                60          144

x          1/3               6             9

y           4                78          117

Algebraic reasoning involves using mathematical structures and processes to analyze and solve problems, and it is an important part of mathematical thinking and problem solving.

What is Algebraic expressions.?

An algebraic expression is a combination of variables, constants, and mathematical operations such as addition, subtraction, multiplication, division, and exponentiation. Algebraic expressions can contain one or more variables, which are usually represented by letters, and they can be simplified or evaluated by substituting numerical values for the variables.

For example, the expression "3x + 2y - 5" is an algebraic expression that contains two variables, x and y, and three constants, 3, 2, and 5. The expression can be evaluated or simplified by substituting specific values for the variables. For instance, if we let x = 2 and y = 1, then the expression becomes "3(2) + 2(1) - 5", which simplifies to 3.

Skip counting, clapping hands rhythmically, and calling out numbers in unison can be helpful activities for students to develop and practice early mathematical concepts. However, they are not necessarily examples of algebraic reasoning.

Algebraic reasoning involves using mathematical symbols and equations to represent and solve problems. It typically involves working with variables, manipulating expressions, and solving equations.

Some examples of algebraic reasoning for students might include:

Writing and solving simple equations, such as "2x + 3 = 7"

Using variables to represent unknown quantities in problems, such as "If x is the number of apples John has, and he gives away 3, how many apples does he have left?"

Recognizing and extending patterns, such as identifying the rule for a sequence of numbers and predicting the next term in the sequence

Simplifying expressions and using the distributive property, such as simplifying "3(x+2) + 2(x+1)" to "5x + 8"

Overall, algebraic reasoning involves using mathematical structures and processes to analyze and solve problems, and it is an important part of mathematical thinking and problem solving.

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Answer:

164.5

Step-by-step explanation:

I think. divide 443 by 2 and then subtract one of the numbers by 57

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Answer: second option (3*10^17)

Step-by-step explanation:

I don't have an explanation bc I used a calculator lol

Answer:

3 * 10^17

Step-by-step explanation:

9.3 / 3.1 = 3

34-17 =17

Answer:

11

Step-by-step explanation:

Answer:

The mode is 11

Mean x¯¯¯: 6.4444444444444

Median x˜6

Mode: 11

Range: 9

Minimum: 2

Maximum: 11

Count n: 9

Sum: 58

Hoped I helped

Given:

Consider the given expression is:

\(\dfrac{x^4y^{-4}z^{-2}}{x^2y^{-2}z^4}\)

To find:

The simplified form of the given expression.

Solution:

We have,

\(\dfrac{x^4y^{-4}z^{-2}}{x^2y^{-2}z^4}\)

By using the quotient property of exponents, we get

\(=x^{4-2}y^{-4-(-2)}z^{-2-4}\)              \(\left[\because \dfrac{a^m}{a^n}=a^{m-n}\right]\)

\(=x^{2}y^{-4+2}z^{-6}\)

\(=x^{2}y^{-2}z^{-6}\)

By using negative exponent property, we get

\(=\dfrac{x^{2}}{y^{2}z^{6}}\)           \(\left[\because a^{-n}=\dfrac{1}{a^n}\right]\)

The simplified form of the given expression is \(\dfrac{x^{2}}{y^{2}z^{6}}\).

Therefore, the correct option is B.

Amani earns 59 dollars in a week if she sells 18 books.

Amani earns a base amount of $41 per week for working part-time at the bookstore. In addition to that, she earns an extra dollar for each book she sells. The equation A = 41 + b represents her total earnings, where A represents the amount she earns and b represents the number of books she sells.

To find out how much Amani earns in a week if she sells 18 books, we substitute the value of b (18) into the equation:

A = 41 + 18

This simplifies to:

A = 59

Therefore, if Amani sells 18 books in a week, she will earn $59.

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False , the variance and standard deviation are not measures of central location

Given data ,

The variance and standard deviation are not measures of central location but measures of dispersion or spread of a dataset

Measures of central location include the mean, median, and mode, which represent the typical or central value of a dataset

The variance and standard deviation are measures of dispersion or spread in a dataset. They provide information about how the values in a dataset are spread out around the mean.

In order to understand the variability or dispersion of data points within a dataset, one must take into account both the variance and standard deviation. They provide information on the range of values and aid in calculating how far away from the mean certain data points are. In statistics and data analysis, these metrics are frequently used to comprehend and evaluate the variance of various datasets.

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