Can someone help me pretty please?

Answer:

Step-by-step explanation:

The concept of squaring a quantity, denoted as x^2, is not something that was "invented" in the traditional sense. It is a fundamental mathematical operation that has been understood and used by humans for thousands of years as a way to represent the mathematical relationship between a number and its square.

The concept of squaring a quantity, denoted as x^2, is a fundamental operation in algebra, which is a branch of mathematics that uses symbols and letters to represent numbers and express mathematical relationships. In algebra, the symbol "x" is commonly used to represent an unknown quantity or a variable, and the operation of squaring, denoted by "^2", is used to represent multiplying a number by itself.

The notation x^2, where x represents a variable or an unknown quantity, is used to denote the square of x, which is the result of multiplying x by itself. For example, x^2 represents x multiplied by x, or x * x. This algebraic symbolism of x^2 is used to represent the concept of squaring a quantity, which is a fundamental mathematical operation used in various mathematical applications, including geometry, physics, and engineering, among others.

The concept of squaring a quantity and the algebraic symbolism of x^2 are foundational elements in mathematics, and they have been used by mathematicians throughout history to solve mathematical problems, express mathematical relationships, and make mathematical calculations.

Answer:

28

Step-by-step explanation:

because he spent half of 28 which is 14 and 7x4=28 BOOM

Answer:

a qualitative graph

Step-by-step explanation:

The best type of graph to model the speed over the full two minutes, is a discrete graph.

Graphs are used to show the relationship between two related quantities.

From the question, we have the following variables,

Speed and Time.

Let us observe the given options.

Both variables are numerical data, and a qualitative graph cannot be used as a model, because qualitative graphs are used for non numerical data.

Bar graphs and histograms are used to show distributions not trends.

The discrete graph is used for numerical data, and it can also be used to show trends by connecting the dots.

∴ we can conclude that the best type of graph to use, is a discrete graph.

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Answer:

1/2

Step-by-step explanation:

Paso Uno: \(\frac{5}{1}* \frac{5}{1} *\frac{5}{1}* \frac{5}{1} *\frac{5}{1}\)* 1/10= 5/10

Paso Dos: Simplificar:

5/5=1

10/5=2

Paso Tres: fracción es 1/2

\(\stackrel{\textit{2nd equation }\times 2}{\begin{array}{rrrrr} -8x&+&2y&=&8\\ 2(4x&+&8y)&=&2(-4) \end{array}}\qquad \implies \qquad \begin{array}{rrrrr} -8x&+&2y&=&8\\ 8x&+&16y&=&-8\\\cline{1-5} 0&+&18y&=&0 \end{array} \\\\\\ 18y=0\implies y=\cfrac{0}{18}\implies \boxed{y=0} \\\\\\ \stackrel{\textit{we know that}}{4x+8y=-4}\implies 4x+8(0)=-4\implies 4x=-4\implies x\cfrac{4}{-4}\implies \boxed{x=-1} \\\\[-0.35em] ~\dotfill\\\\ ~\hfill \stackrel{\textit{one solution}}{(-1~~,~~0)}~\hfill\)

you'd want to often enough check their slopes first, if the slopes differ, they meet, if equal, they're parallel and either never meet or meet everywhere.

Answer:

-5=0

Step-by-step explanation:

g(4)=8-8-5=-5 you substitute 4 into x

-5=0

Answer:

x = 40

Step-by-step explanation:

180 = 100 + x +x

180-100= 2x

80 = 2x

x = 40

Answer:

\(x = - 59\)

Step-by-step explanation:

\((6x + 28) = (7x + 87)\)

\(6x + 28 = 7x + 87\)

\(6x - 7x = 87 - 28\)

\(1x = - 59\)

\(x = - 59\)

Answer:

Five touchdowns were made in the game

Step-by-step explanation:

Here, we want to know the number of touchdowns made during the game.

We proceed as follows;

Let the number of touch downs be x

So the total points earned through touchdowns is 6 * x = 6x

The number of scores is 10 times

Let the number of extra kick be y which means that the number of conversions will be (y-1)

So the total number of score times will be ;

x + y + y-1 = 10

x + 2y = 11 •••••••••(i)

Now let’s work with points

Touch down points = 6 * x = 6x

Points from extra kick = 1 * y = y

Points from 2-point conversions = 2(y-1) = 2y - 2

So;

6x + y + 2y -2 = 37

6x + 3y = 37 + 2

6x + 3y = 39

divide through by 3

2x + y = 13 •••••••(ii)

So now solve simultaneously

From ii, y = 13 - 2x

Put this into i

x + 2(13-2x) = 11

x + 26 - 4x = 11

x -4x = 11-26

-3x = -15

x = -15/-3

x = 5

There are five touchdowns in the game

There are Five touchdowns were made during the game.

Here,

Alexandria High School scored 37 points in a football game. Six points are awarded for each touchdown.

After each touchdown, the team can earn one point for the extra kick or two points for a 2-point conversion.

The team scored one fewer 2-point conversions than extra kicks. The team scored 10 times during the game.

We want to know the number of touchdowns made during the game.

What is system of equations?

A system of equations is a collection of two or more equations with a same set of unknowns.

Now,

Let the number of touch downs be x

So, the total points earned through touchdowns is;

6 * x = 6x

The number of scores is 10 times

Let the number of extra kick be y which means that the number of conversions will be (y-1)

So, the total number of score times will be ;

x + y + y - 1 = 10

x + 2y = 11 •••••••••(i)

Now let’s work with points

Touch down points = 6 * x = 6x

Points from extra kick = 1 * y = y

Points from 2-point conversions = 2(y-1) = 2y - 2

Hence;

6x + y + 2y -2 = 37

6x + 3y = 37 + 2

6x + 3y = 39

divide through by 3

2x + y = 13 •••••••(ii)

So, now solve this;

From ( ii ), y = 13 - 2x

Put this into ( i )

x + 2(13-2x) = 11

x + 26 - 4x = 11

x -4x = 11-26

-3x = -15

x = -15/-3

x = 5

Hence, There are Five touchdowns were made during the game.

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The percent error in Jessica's calculation is 4.17%.

To calculate the percent error in Jessica's calculation, we can use the formula:

Percent Error = (|Measured Value - Actual Value| / Actual Value) * 100

Given that Jessica's measured value was 125 seconds and the actual value was 120 seconds, we can substitute these values into the formula:

Percent Error = (|125 - 120| / 120) * 100

Simplifying further:

Percent Error = (5 / 120) * 100

Percent Error = 0.0417 * 100

Percent Error = 4.17%

This means that Jessica's recorded time of 125 seconds differs from the actual time of 120 seconds by approximately 4.17% in relative terms. The positive sign indicates that Jessica's recorded time was greater than the actual time.

Percent error is a way to quantify the discrepancy between a measured value and the true value. It provides a measure of the accuracy of a measurement or calculation, allowing us to understand the degree of error or deviation involved.

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Answer:

m = 5

Step-by-step explanation:

Remark

This is a proportion question. A proportion is 2 equal ratios. There are 4 parts to a proportion. If 3 are known, the 4th can be found.

Formula

AB/AC = RQ/QS

Givens

AB = m

AC = 2

RQ = 10

QS = 4

Solution

m/2 = 10/4                      Multiply both sides by 2

2m/2 = 2*10/4                Combine

m = 20/4            

m = 5

Answer m = 5

The data set is quantitative and the level of measurement is ordinal.

This is because the survey ratings are numerical values (below expectations, meets expectations, and above expectations) that can be ranked, so it is not just qualitative descriptive terms but numerical values used to describe the data. This makes it quantitative, and the ordinal level of measurement because the numerical values can be ordered in a meaningful way.

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Answer:

3

Step-by-step explanation:

this is the answer hope this helps

Answer:

3

Step-by-step explanation:

i hope this answer helps you

Answer:

The median of the scores in this stem-and-leaf plot is 78

Step-by-step explanation:

The total data set represented by Stem and leaf in order from the least to the greatest are as following:

58, 59, 64, 64 , 66, 68, 72, 74, 75, 76, 78, 79, 83, 84, 86, 87, 88, 91, 93, 93, 95

The number of data is 21

The median of the data at the place number 11

So, median = 78

The data given has: a) A strong correlation, b) A positive correlation

Correlation is a statistical measure that expresses the extent to which two variables are linearly related, meaning they change together at a constant rate.

We have ordered pairs in the data as:

x             y

1             2

2            3

3            8

4            10

5            26

6            38

7            46

8            50

9            68

Plotting the graph (attached)

Clearly, on plotting the scatter plot on the basis of table of values, we see that the relation is a strong correlation since we can find a relationship between variable x and y.

i.e. the points will lie above or below the curve  which is formed by connecting some points of the scatter plot and are not scattered away.

Hence, the data above has: A strong correlation.

Also, the graph is a positive correlation since with the increasing value of x the y-value also increases.

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The vectors u = \(\left(\begin{array}{ccc}Cost\\Sint\end{array}\right)\)     ,   v = \(\left(\begin{array}{ccc}Sint\\Cost\end{array}\right)\), are linearly independent, because the determinant is not 0.

The Vector "u" is =  \(\left(\begin{array}{ccc}Cost\\Sint\end{array}\right)\) , and the vector "v" is =  \(\left(\begin{array}{ccc}Sint\\Cost\end{array}\right)\).

If the value of matrix formed by two or more given vectors is zero(0) or

If determinant of matrix of given vectors is (0) zero, then the vectors can be called as linearly-dependent.

The matrix related to two vector "u" and vector "v" is given as :

⇒ \(\left[\begin{array}{ccc}Cost&Sint\\Sint&Cost\\\end{array}\right]\)

The value of this matrix can be calculated by finding the determinant of the matrix,

Which is : Cost×Cost - Sint×Sint

= Cos²t - Sin²t

= Cos(2t) ≠ 0,

Since the value is not zero, we can say that the vectors are linearly independent.

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The given question is incomplete, the complete question is

Determine whether or not the vector functions are linearly dependent.

u = \(\left(\begin{array}{ccc}Cost\\Sint\end{array}\right)\)     ,   v = \(\left(\begin{array}{ccc}Sint\\Cost\end{array}\right)\).

The percentage off of the coupon is 25%

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

Normal price = $24

Amount saved = $6

The above parameters mean that

Percentage of the coupon = Amount saved/Normal price

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

Percentage of the coupon = 6/24

Evaluate

Percentage of the coupon = 25%

Hence, the percentage is 25%

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Answer:

draw a line straight down through p

Subtract the number at the baseball game from the hockey game:

2058 - 1300 = 758

There was 758 more people at the hockey game.

Answer:

758 more fans were there

Step-by-step explanation:

Difference = Hockey fans - Baseball fans

= 2058 - 1300

= 758

A soccer ball is kicked with an initial velocity of 15 m/s at an angle of 30 degrees above the horizontal. The ball will travel through the air and eventually hit the ground further down the field.

When a projectile like a soccer ball is kicked, its motion can be divided into horizontal and vertical components. In this case, the initial velocity of 15 m/s is the resultant of these components.

The horizontal component of velocity remains constant throughout the ball's flight because no external forces act on it horizontally. Therefore, the horizontal velocity is given by:

Vx = V * cosθ = 15 m/s * cos(30°) = 15 m/s * (√3/2) ≈ 12.99 m/s.

The vertical component of velocity changes due to the effect of gravity. The acceleration due to gravity is approximately 9.8 m/s^2 directed downwards. The initial vertical velocity can be calculated as:

Vy = V * sinθ = 15 m/s * sin(30°) = 15 m/s * (1/2) = 7.5 m/s.

Since the ball eventually hits the ground, its vertical displacement is equal to zero. Using the kinematic equation for vertical motion:

0 = Vy * t - (1/2) * g * t^2,

where t is the time of flight and g is the acceleration due to gravity.

Solving this equation, we find that the time of flight is approximately 1.53 seconds. The horizontal distance covered by the ball can be calculated using the formula: Distance = Vx * t = 12.99 m/s * 1.53 s ≈ 19.88 m.

Therefore, the ball will hit the ground further down the field at a horizontal distance of approximately 19.88 meters.

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Answer:

D

Step-by-step explanation:

Answer:

D. 6 cm

Step-by-step explanation:

since the scale factor from KLMNP to QRSTU is 2/3, just multiply LM by 2/3

therefore, your answer is 6 cm

hope this helps!!

Answer:

the answer is c- 1 11/12

Step-by-step explanation:

Answer:

The answer is C. 1 11/12

Step-by-step explanation:

If you subtract both numbers, that is the answer you get.

The value of x will be 3.

The length of TW will be 6 units.

What is mean by Triangle?

A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.

Given that;

In triangle TWZ,

The sides TY and YZ are equal.

Now,

Since, The sides TY and YZ are equal.

And, Side YW is common side.

∠WYT = ∠WYZ = 90°

Hence,  ΔWYT ≅ ΔWYZ

So, We get;

WT = WZ

Substitute all the values, we get;

4x - 6 = 2x

4x - 2x = 6

2x = 6

x = 3

Thus, The value of x will be 3.

And, The length of TW = 2x

                                    = 2 × 3

                                    = 6 units

Therefore, The value of x will be 3.

The length of TW will be 6 units.

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Answer:

4, 12, 8, 10

Step-by-step explanation:

Ratio:

Hydrogen : Oxygen

2:1

1) 8/2 = 4 Oxygen atoms

2) 6*2 = 12 Hydrogen atoms

3) 16/2 = 8 Oxygen atoms

4) 20/2 = 10 Oxygen atoms

Answer:

its hard sowwy

Step-by-step explanation:

thanks for the points

When we conclude that the results we have gathered from our sample are probably also found in the population from which the sample was drawn, we say that the results are statistically significant.

In statistical analysis, we use hypothesis testing to determine whether the results of a sample are likely to be representative of the population as a whole. If the results are statistically significant, we can infer that there is a low probability that the observed differences between the sample and the population occurred by chance alone.

This allows us to generalize the findings from the sample to the larger population with a reasonable degree of confidence.

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Answer & Step-by-step explanation:

We use decimals every day while dealing with money, weight, length etc. Decimal numbers are used in situations where more precision is required than the whole numbers can provide. For example, when we calculate our weight on the weighing machine, we do not always find the weight equal to a whole number on the scale.

The equation of line whose x-intercepts is 12 and y- intercept is 4 is

3x + y = 36.

According to the given question.

We have a equation of line.

ax + by = c.

Also, x-intercept is 12 and y intercept is 4.

As we know that,the x-intercept for any curve is the value of the x coordinate of the point where the graph cuts the x-axis and y coordinate is zero.

And, the y-intercept is the point where the graph intersects the y-axis and the x-coordinate is zero.

Therefore, we have two points (12, 0) and (0, 4).

So, the equation of line from the two point s(12, 0) and (0, 4) is given by

(  y - 0) = (4 - 0/0 - 12)(x -12)

⇒ y = 4/-12(x -12)

⇒ y = -3(x -12)

⇒ y = -3x + 36

⇒ 3x + y = 36

By comparing the given equation of line ax + by = c with the above equation we get

a = 3, b = 1 and c = 36.

Hnce, the equation of line whose x-intercepts is 12 and y- intercept is 4 is 3x + y = 36.

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Answer:

Step-by-step explanation:

Given sequence:

The first differences:

The second differences:

If the sequence is T(n) = an² + bn + c, we have:

Using the first and second differences work out  the value of zero term:

This gives us c = - 4

Now we have:

The first term is T(1) = -1, substitute n = 1 and find the value of b:

The nth term is:

Now lets find if -189 belongs to this sequence:

The left side is positive and the right side is negative so the answer is also negative