100 Quick and EASY POINTS to make if you can help me!
Rules are:
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The 3x3 matrix after composite transformation of scaling by 2, a rotation of 90° about origin is \(\left[\begin{array}{ccc}2c&2d&2i\\2b&2e&2h\\2a&2d&2g\end{array}\right]\).

Let A=\(\left[\begin{array}{ccc}a&b&c\\d&e&f\\g&h&i\end{array}\right]\) be a 3x3 matrix

scaling the matrix A by 2 then  the result will be

\(2A=2\left[\begin{array}{ccc}a&b&c\\d&e&f\\g&h&i\end{array}\right]\\\\=\left[\begin{array}{ccc}2a&2b&2c\\2d&2e&2f\\2g&2h&2i\end{array}\right]\)

now, rotating the resultant matrix by 90° in counterclockwise direction about the origin, we get

\(=\left[\begin{array}{ccc}2c&2d&2i\\2b&2e&2h\\2a&2d&2g\end{array}\right]\)

Thus, a 3x3 matrix after composite transformation of scaling by 2, a rotation of 90° about origin is \(\left[\begin{array}{ccc}2c&2d&2i\\2b&2e&2h\\2a&2d&2g\end{array}\right]\)

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C) randomized block experimental design.

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Answer:c

Step-by-step explanation:

A.) we know,

=》

\( \dfrac{5}{8} \: \: of \: total \: students \: = boys\)

=》

\( \dfrac{5}{8} \times 800 \)

=》

\(5 \times 100\)

=》

\(500 \: \: boys\)

now,

number of girls :

=》

\(800 - 500\)

=》

\(300 \: girls\)

Answer:

There are 500 boys and 800 girls

I hope it helps

have a nice day

좋은 하루 되세요

# 캡틴 파워

#Captainpower

Answer:

x=19 degree

2x=2*19

=38 degree

Step-by-step explanation:

Answer:

2x + 24

If they want you to completely simplify and solve foe x it would be x = 12

Step-by-step explanation:

Answer:

2x+24

Step-by-step explanation:

2(x+12)

Multiply both x and 12 by 2.

(2*x)+(2*12)

2x+24

Answer:

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

Number of male is the difference of total and female:

Percentage of male:

Answer:

33.33%

Step-by-step explanation:

First, let us find the number of male students.

Total students = Male students + Female students

Male students = Total students - Female students

Male students = 48 - 32

Male students = 16

Then, let us find the percentage of males.

\(\sf Percentage\:of\: males=\dfrac{No.\:of\:males}{Total\:number\:of\:students} *100\\\\\sf Percentage\:of\: males=\dfrac{16}{48} *100\\\\\sf Percentage\:of\: males=0.3333 *100\\\\\sf Percentage\:of\: males=33.33\)

The value of the x is 7.9

What is proportion?

Two ratios are set to be equal in an equation called a proportion.

Given,    \(\frac{7}{8} = \frac{x}{9}\)

or, 8x = 9*7

or, 8x = 63

or, x = 63/8

or, x = 7.875 = 7.9 (rounded to the nearest tenth)

Therefore, the required value of x is 7.9

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Answer:

Step-by-step explanation:

The Probability of Landing a heads is (1/2)

Now, to find the probability of landing it five times in a row, it is

1/2 x 1/2 x 1/2 x 1/2 x 1/2

( 1/2 is multiplied to the number of times to get a head )

The final answer will be,

Probability of landing heads 5 times in a row = 1/32

The actual parameter (argument) to assign to each formal parameter is the order of the parameters indicates how they are assigned (option b).

The answer choice that determines which actual parameter (argument) to assign to each formal parameter depends on the programming language and the function definition.

Answer choice (b) is generally correct: the order of the parameters indicates how they are assigned. In many programming languages, the parameters are assigned in the order they appear in the function definition. When calling the function, you pass the actual arguments in the corresponding order.

Answer choice (a) is not always true. While some programming languages require the names of the formal parameters to match the names of the actual arguments, others may allow different names as long as the order is maintained.

Answer choice (c) is incorrect. Functions can accept multiple parameters, not just one.

Answer choice (d) is also incorrect. In most programming languages, you don't need to manually assign each parameter at the beginning of the function. The assignment is handled automatically when the function is called with the appropriate arguments.

So, the most accurate answer is (b) - the order of the parameters indicates how they are assigned.

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-- The given question is incomplete, the complete question is

"How do you determine which actual parameter (argument) to assign to each formal parameter?

a. the names of the formal parameters must match.

b. the order of the parameters indicates how they are assigned.

c. you can only pass only one parameter to a function.

d. you must manually assign each parameter at the beginning of the function." --

234.4 .zmmansbdhdgdgddhdhdd

Answer:

\(t \: = \: 36.86 \: hrs.\)

Step-by-step explanation:

\(if \: A = p(2) {}^{ \frac{t}{3} } \: then \: \frac{t}{3} \: = log_{2}( \frac{A}{p} ) \\ so \: \frac{t}{3} = log_{2}( \frac{1.0 \times {10}^{6} }{2.0 \times {10}^{2} } ) = \\ \frac{t}{3} = 12.2877 \: hence \: t \: is \: 12.2877 * 3 = 36.8631 \)

Answer:

oK so:

your slope formula is y = mx + b

m= slope

b= y intercept

              knowing this---->

y= 1/3x +b

      to find b, you must plug in the given point to your formula: (3,1)

1 = 1/3(3) + b     <--- solve b

b = 0                (1/3*3) = 1    ----->  move the 1 to the left by subtracting and you

                                                     get 0 for b.

your slope formula for the question is:       y = 1/3x

use this new formula and plug in each answer choice; if both sides equal to each other, that is your answer!

     first choice:  (9,3)                   3 = 1/3(9)      

                                                                    true!

     second choice:  (2,0)              0 = 1/3(2)

                                                                    false!

      third choice:  (4,2)                    2 = 1/3(4)

                                                                     false!

      fourth choice:  (4,4)                   4 = 1/3(4)

                                                                    false!

therefore your final answer is (9,3)

hope this helpsss

Answer:

760x=3040, 3040/760=4

answer=4

Step-by-step explanation:

Answer:

perimeter = 2(x + 5)

this is 2x + 10

x = 55 inches

Step-by-step explanation:

this question is a bit weird because they didn't put the units for 5, so I'm assuming it's in inches...

the perimeter of a rectangle will have two of each, so we can put the 2 outside the bracket since it applies to everything. We have x and we have 5 so put those in the bracket with a plus sign because you add when you're calculating the perimeter.

5 + 5 = 10

120 - 10 = 110 inches (this is 2x)

110 ÷ 2 = 55 inches

Answer:

Step-by-step explanation:

f(4)= 1

g(1) = 3

answer is 3

Answer:

− 4 = ( 6 − x) + 4 = 4 x − 20 = x = 6 i think this is right

Step-by-step explanation:

Answer:

x can be all real numbers

Step-by-step explanation:

-4 (6 - x) + 4 = 4x - 20

-24+4x+4=4x-20

4x-4x=-20+24-4

0=0

The appropriate test statistic for comparing the number of students who met or did not meet a cutoff score on two different days would be the McNamar's test.

McNamar's test is a statistical test used to compare paired proportions or counts of dichotomous data.

In this case, the paired proportions would be the number of students who met or did not meet the cutoff score on day 1 and day 2.

The test statistic for McNamar's test is the chi-square statistic, calculated using the following formula,

X² = ((b-c)²) / (b + c)

where b is the number of students who met the cutoff score on day 1 but not day 2,

And c is the number of students who did not meet the cutoff score on day 1 but did meet the cutoff score on day 2.

The chi-square statistic follows a chi-square distribution with 1 degree of freedom.

A p-value can be calculated based on this distribution to determine if there is a statistically significant difference between the paired proportions.

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The above question is incomplete, the complete question is:

What test statistic would be examined by determining how many students met the cutoff score and how many did not meet the cutoff score for a test on day 1 and again on day 2?

The surface area of the solid obtained by rotating the area enclosed by the graphs of \(\( f(x)=-x+4 \) and \( g(x)=x^{2}-x+3 \)\)about the line x = 4 is 67π/3.

The graphs of the two functions are shown below: graph{x^2-x+3 [-5, 5, -2.5, 8]--x+4 [-5, 5, -2.5, 8]}Notice that the two graphs intersect at x = 2 and x = 3. The line of rotation is x = 4. We need to consider the portion of the curves from x = 2 to x = 3.

To find the volume of the solid of revolution, we can use the formula:\($$V = \pi \int_a^b R^2dx,$$\) where R is the distance from the line of rotation to the curve at a given x-value. We can express this distance in terms of x as follows: R = |4 - x|.

Since the line of rotation is x = 4, the distance from the line of rotation to any point on the curve will be |4 - x|. We can thus write the formula for the volume of the solid of revolution as\(:$$V = \pi \int_2^3 |4 - x|^2 dx.$$\)

Squaring |4 - x| gives us:(4 - x)² = x² - 8x + 16. So the integral becomes:\($$V = \pi \int_2^3 (x^2 - 8x + 16) dx.$$\)

Evaluating the integral, we get\(:$$V = \pi \left[ \frac{x^3}{3} - 4x^2 + 16x \right]_2^3 = \frac{11\pi}{3}.$$\)

Therefore, the volume of the solid obtained by rotating the area enclosed by the graphs of \(\( f(x)=-x+4 \) and \( g(x)=x^{2}-x+3 \)\) about the line x = 4 is 11π/3.

The formula for the surface area of a solid of revolution is given by:\($$S = 2\pi \int_a^b R \sqrt{1 + \left( \frac{dy}{dx} \right)^2} dx,$$\) where R is the distance from the line of rotation to the curve at a given x-value, and dy/dx is the derivative of the curve with respect to x. We can again express R as |4 - x|. The derivative of f(x) is -1, and the derivative of g(x) is 2x - 1.

Thus, we can write the formula for the surface area of the solid of revolution as:\($$S = 2\pi \int_2^3 |4 - x| \sqrt{1 + \left( \frac{dy}{dx} \right)^2} dx.$$\)

Evaluating the derivative of g(x), we get:\($$\frac{dy}{dx} = 2x - 1.$$\)

Substituting this into the surface area formula and simplifying, we get:\($$S = 2\pi \int_2^3 |4 - x| \sqrt{1 + (2x - 1)^2} dx.$$\)

Squaring 2x - 1 gives us:(2x - 1)² = 4x² - 4x + 1. So the square root simplifies to\(:$$\sqrt{1 + (2x - 1)^2} = \sqrt{4x² - 4x + 2}.$$\)

The integral thus becomes:\($$S = 2\pi \int_2^3 |4 - x| \sqrt{4x² - 4x + 2} dx.$$\)

To evaluate this integral, we will break it into two parts. When x < 4, we have:\($$S = 2\pi \int_2^3 (4 - x) \sqrt{4x² - 4x + 2} dx.$$\)

When x > 4, we have:\($$S = 2\pi \int_2^3 (x - 4) \sqrt{4x² - 4x + 2} dx.$$\)

We can simplify the expressions under the square root by completing the square:\($$4x² - 4x + 2 = 4(x² - x + \frac{1}{2}) + 1.$$\)

Differentiating u with respect to x gives us:\($$\frac{du}{dx} = 2x - 1.$$\)We can thus rewrite the surface area formula as:\($$S = 2\pi \int_2^3 |4 - x| \sqrt{4u + 1} \frac{du}{dx} dx.\)

Evaluating these integrals, we get\(:$$S = \frac{67\pi}{3}.$$\)

Therefore, the surface area of the solid obtained by rotating the area enclosed by the graphs of \(\( f(x)=-x+4 \) and \( g(x)=x^{2}-x+3 \)\)about the line x = 4 is 67π/3.

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The cosecant, secant, and cotangent functions are defined as the reciprocals of the sine, cosine, and tangent functions, respectively which have two parent trigonometric functions have a period of π and a range that consists of the set of all real numbers.

These functions also have a period of 2π and their ranges depend on the range of the corresponding parent function.

Therefore, correct answer will be a. sine, b. cosine and c. tangent.

The trigonometric functions are mathematical functions used to describe relationships involving lengths and angles of triangles. These functions include sine, cosine, tangent, cosecant, secant, and cotangent. Each of these functions has its own unique properties, including period and range.

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The probability that Team A wins the best-of-five series over Team B is 17/81.

To determine the probability that Team A wins the best-of-five series against Team B, we need to consider the different possible outcomes. Team A can win the series by winning 3 games or 4 games or 5 games.

The probability of winning exactly 3 games out of 5 can be calculated using the binomial probability formula:

P(X = k) = C(n, k) * p^k * (1-p)^(n-k)

where n is the total number of games (5 in this case), k is the number of games won (3 in this case), and p is the probability of winning a single game (1/3).

Using this formula, we can calculate the probability of winning 3 games, 4 games, and 5 games, and then add them together to get the overall probability of winning the series.

P(Winning series) = P(X = 3) + P(X = 4) + P(X = 5)

= C(5, 3) * \((1/3)^3\)* \((2/3)^2\)+ C(5, 4) *\((1/3)^4\) * (2/3) + C(5, 5) * \((1/3)^5\)

= (10 * 1/27 * 4/9) + (5 * 1/81 * 2/3) + (1 * 1/243)

= 40/243 + 10/243 + 1/243

= 51/243

= 17/81

Therefore, the probability that Team A wins the best-of-five series over Team B is 17/81.

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Answer:

The distance between those points is 15.

Step-by-step explanation:

1.   (x2-x1) = (8 - -4) = 12

2.   (y2-y1) = (-3 - 6) = -9

3.   (12)^2 + (-9)^2 = 144 + 81 = 225

4.   √225 = 15

5.   15

Answer:

4.73

Step-by-step explanation:

10% is 10

so, you have to multiple 3×.10=.30

3-.30=2.70

2.70×.75 because 7.5% is .75

that is 2.0250 and then you have to add 2.0250 with 2.70 that is 4.7250 and if you round it. It is 4.73

Hope that works

Answer:

B im pretty sure

Answer:

2x+14

Step-by-step explanation:

(3/4)x-7.3+(5/4)x+21.3

(3/4+5/4)x+21.3-7.3

2x+14

Answer:

Same-side interior angles

m∠ = 80°

Step-by-step explanation:

Step 1: Set up equation

x + 85 + x + 105 = 180

Step 2: Combine like terms

2x + 190 = 180

Step 3: Isolate x and solve

2x = -10

x = -5

-5 + 85 = 80°

The margin of error for a 95% confidence interval for the population mean is approximately 2.57. So, correct option is A.

To find the margin of error for a 95% confidence interval for the population mean (μ), we can use the formula:

Margin of Error = Z * (σ / √n),

where Z is the z-score corresponding to the desired confidence level, σ is the population standard deviation, and n is the sample size.

For a 95% confidence interval, the corresponding z-score is approximately 1.96 (obtained from the standard normal distribution table).

Plugging in the values, we have:

Margin of Error = 1.96 * (8.5 / √42).

Calculating this expression, we find:

Margin of Error ≈ 2.57.

The correct answer is option a) 2.57.

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Answer:

Both x and y-coordinate are negative.