what is the number of one-to-one functions from f from the set {1,2,... , n} to the set {1,2,... , n} so that f(x) = x for some 1 ≤ x < n and f(n) ≠ n?

The missing lengths of right triangles are listed below:

Case 1: AB = 3√3, AC = 6√3

Case 2: DE = √2, DF = 2

Case 3: GI = 5√2, GH = 5

Case 4: JL = 14, KL = 7√3

Case 5: OP = 10√3, MP = 20

In this problem we must determine the missing sides of special right triangles by means of Euclidean geometry. There are two special right triangles: (45 - 90 - 45), (30 - 60 - 90)

Right triangle 45 - 90 - 45

Right triangle 30 - 60 - 90

Now we proceed to find the missing lengths:

Case 1

AB = BC / √3

AB = 3√3

AC = BC / 0.5√3

AC = 6√3

Case 2

DE = √2

DF = 2

Case 3

GI = 5√2

GH = 5

Case 4

JL = 7 / 0.5

JL = 14

KL = 7√3

Case 5

OM = 10

MP = 20

OP = 10√3

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Answer:

Step-by-step explanation:

A reflection across the line y = x will not carry the square onto itself, since the vertex (0, 2) would be reflected to (2, 0) which is not a vertex of the original square.

A reflection across the line y = -x would also not carry the square onto itself, since the vertex (0, 2) would be reflected to (−2, 0) which is not a vertex of the original square.

However, a reflection across the x-axis would carry the square onto itself since all of the vertices lie in the same quadrant, and reflecting across the x-axis does not change their signs.

A 45° or 90° rotation about the origin would also carry the square onto itself since the square has rotational symmetry of order 4.

Therefore, the correct answers are C, D, and E.

Answer: The answer is y=-7x. yeah

Answer:y=-2x-9

Step-by-step explanation:

Slope intercept form is y=mx+b

4x+2y=-18

Subtract 4x from both sides:

2y=-4x-18

Divide the entire thing by 2:

y=-2x-9

Answer:

8 games in a row

Step-by-step explanation:

If they win 8 games in a row, there winning percentage will be 20/33, which is equal to about 60%.

Answer:

q= 11

Step-by-step explanation:

25-14= 11

Answer:

q= 11

Step-by-step explanation:

25=q+14

25-14=q+14-14

11=q

hope it's helpful ❤❤❤

THANK YOU.

Answer:

The highest peak when x= 33  and the ball reaches a height of 16.39 ft

Step-by-step explanation:

The peak is obtained at x= -b/2a
x= -0.66 / 2(-0.01)

x = -0.66/(-0.02)

x= 33

The highest is reached when  x=33 :
-0.01(33)^2 +0.66*33 +5.5 = 16.39 ft

The ball finally touches the ground again when -0.01x² + .66x +5.5 = 0
and the starting height is when x=0 => -0.01(0)^2 + 0.66(0) +5.5 = 5.5 ft

He started his throw at 5.5 ft

Answer:

77°

Step-by-step explanation:

We can use: \((c*9/5)+32=f\) to convert Celsius to Fahrenheit.

'c' - Celsius

'f' - Fahrenheit

Replace 'c' with 25:

\((25*9/5)+32=f\\45+32=f\\\boxed {77 = f}\)

25° Celsius is 77° Fahrenheit.

Answer:

77

Step-by-step explanation:

The probability of the compound event of spinning a 5 and flipping heads is 1/12.

Assuming that the spinner is fair and each outcome is equally likely, the probability of spinning a 5 is:

P(spinning 5) = number of ways to get 5 / total number of outcomes

P(spinning 5) = 1 / 6

Now, assuming that the coin is fair and has an equal probability of landing on heads or tails, the probability of flipping heads is:

P(flipping heads) = number of ways to get heads / total number of outcomes

P(flipping heads) = 1 / 2

To find the probability of the compound event of spinning 5 and flipping heads, we multiply the probability of spinning 5 by the probability of flipping heads:

P(spinning 5 and flipping heads) = P(spinning 5) x P(flipping heads)

P(spinning 5 and flipping heads) = (1/6) x (1/2)

P(spinning 5 and flipping heads) = 1/12.

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The complete question:

You spin the spinner and flip a coin. Find the probability of the compound event. The probability of spinning number 5 and flipping heads is__.

And spinner sample space is {1, 2, 3, 4, 5, 6}

Answer:

y= -3x + 5

Step-by-step explanation:

The slope of the line is m=−3

m=−3.

The equation of the line in the slope-intercept form is y=−3x+5y=−3x+5.

The equation of the line in the point-slope form is y−5=−3xy−5=−3x.

Answer:

the answer is A. 64:343.

Step-by-step explanation:

The ratio of the volumes of two similar figures is equal to the cube of the ratio of their corresponding side lengths. Since the scale factor of the two cylinders is 4:7, the ratio of their corresponding radii is 4:7 and the ratio of their heights is also 4:7.

So, the ratio of their volumes is (4/7)^3 = (64/ 343) = 64:343

So, the answer is A. 64:343.

The inequality that represent the possible length of the third side is

                    7 < x < 17

According to the triangle inequality theorem, the sum of any two sides of a triangle must be greater than the measure of the third side of the triangle.

We have been given measure of two sides which are 5 and 12. Then the possible length for the third side has two condition

Let the third side be x unit.

First condition,      x + 5 > 12

                              x > 7

Second condition,  12+ 5 > x

                                  17 > x

Hence the inequality that represent the possible length of the third side is

                    7 < x < 17

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Answer:

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

The sales price is $36.

We have been told that the discount on the pair of rollerblades is 25%. It has also been told that the discounted price is $12.0. Now, first, we need to find the original price of the rollerblades. Let the original price of the rollerblades be = $x.

Now - x/100 * 25 = $12

- x/100 = 12/25

- 25x = 1200

- x = $48

Now, in order to find the sale price, we need to -

= Original price - Discounted price

= $48 - $12

= $36

Hence, the price of the rollerblades after putting in a 25% discount is $36.

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The values of the inverse functions are f-¹ (3) = -1 and f-¹ (8) = 7

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

x   f(x)

-1   3

1     6

2    5

3    7

7   8

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

f-¹ (x) means that we calculate the value of x from the table when y = x in the function notation

So, we have

f-¹ (3) = -1 and f-¹ (8) = 7

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Answer: 3 1/4 + 2 1/3 = 67/

12

= 5 7/

12

≅ 5.5833333

Step-by-step explanation:

The correct answer is option C: A and C. The average population density is 12,199,895 / 1,566,231 ≈ 7.793 people per square mile.

To solve the problem, we need to first find the average population density of the 10 U.S. states listed in the table.

The total population of these states is:

584,080 + 624,779 + 713,635 + 799,063 + 1,068,778 + 1,359,146 + 1,568,662 + 1,792,147 + 1,826,341 + 1,853,304 = 12,199,895

The total area of these states is:

97,818 + 104,100 + 109,889 + 121,298 + 146,435 + 178,040 + 192,174 + 212,818 + 236,058 + 268,601 = 1,566,231

The average population density is then:

12,199,895 / 1,566,231 ≈ 7.793 people per square mile

Now, we can compare the population densities of the countries listed in the answer choices to the average population density of the 10 U.S. states.

A. Laos has a population density of 71.5 people per square mile, which is less than the average population density of the 10 U.S. states. Therefore, this option is correct.

B. Saudi Arabia has a population density of 32.5 people per square mile, which is less than the average population density of the 10 U.S. states. Therefore, this option is not correct.

C. Canada has a population density of 9.3 people per square mile, which is less than the average population density of the 10 U.S. states. Therefore, this option is correct.

D. Iceland has a population density of 7.7 people per square mile, which is equal to the average population density of the 10 U.S. states. Therefore, this option is not correct.

E. Turkey has a population density of 236.6 people per square mile, which is greater than the average population density of the 10 U.S. states. Therefore, this option is not correct.

Therefore, the correct answer is option C: A and C.

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Step-by-step explanation:

7x+63

= 7 (x +9)

Hope it helps ya

Answer:

7(x+9)

Step-by-step explanation:

7 times what = 63?

7*9 = 63 so lets pull out a 7 from the expression

7x+63 = 7(x+9)

Answer:

The height of the tree to the nearest foot is 75.

Step-by-step explanation:

The height is opposite the angle of elevation, and the 45 ft distance to the tree is adjacent to it.

tangent = opposite/adjacent

\(\frac{tan(59)}{1} = \frac{h}{45}\)

h = tan(59) * 45

h ≈ 74.89

To the nearest foot, 74.89 is 75 ft.

On solving the provided question, we can say that the slope's the intersection points are: (20.698, 42.197) and (43.998,16.527), the transmitter is within range between those to points along the line.

A line's slope determines how steep it is. A mathematical equation for the gradient is called "gradient overflow" (the change in y divided by the change in x). The slope is the ratio of the vertical change (rise) between two points to the horizontal change (run) between those same two spots. When a straight line's equation is written as y = mx + b, the slope-intercept form of an equation is employed to express it. The y-intercept is located at a location where the line's slope is m, b is b, and (0, b). For instance, the slope of the equation y = 3x - 7 and the y-intercept (0, 7).The line's slope is m. b is b at the point where the y-intercept is, and (0, b). As an illustration, the equation y = 3x - 7 has a slope of 3, and its y-intercept is (0, 7).

city - north at (0,65)

city-east at (59,0)

Slope is m=(-65/59)

\(B= y - mx = 65 - (-65/59)(0) = 65\)

The equation of the line between the cities is y = (-65/59)x + 65

\(x^2 + ( (-65/50)x + 65) )^2 = 47^2\)

the intersection points are:

(20.698, 42.197) and (43.998,16.527)

The transmitter is within range between those to points along the line.

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Answer:

2, 4, 6 are expressions

Step-by-step explanation:

A math sentence has a verb: "is equal to"  It could also be some other, similar phrase, such as "is less than" or "is not equal to," for example.

An expression has no verb!

x - 6  Say it out loud. See?  No verb.  It's like saying "that evil neighbor of mine" without saying anything more. Yes? Did what? Is what? Compares to what?

Answer:

Sorry , I might be wrong : 35664

Step-by-step explanation:

So, first, we can find 33% of 53,200

That is 17,556

Then, we can subtract 17556 from 53,200

We get 35664

Answer:

ok don't panic it's organic

Answer:

\(\frac{1}{3} , \frac{1}{2} , \frac{3}{8} , \frac{5}{8}\)

Step-by-step explanation:

Answer:

-1.75

Step-by-step explanation:

We know that the midpoint formula is [for the x-coordinate per say] x = 1/2x1 + 1/2x2. If we want to find a point that lies 1/4th of the way we use x = 3/4x1 + 1/4x1. How? Because the point lies 1/4th from one endpoint and 3/4th from the other.

x = 3/4x1 + 1/4x2,

x = 3/4(-3) + 1/4(2) = -9/4 + 2/4 = -7/4

= - 1.75

--- There is an easier way to do it though, but it is really vague so you should not use it. We can form a triangle with MN being the hypotenuse. What would the length of the legs be? They would be 6 and 5. Now let's form a triangle 1/4th of that. 6/4  = 1.5  and 5/4 = 1.25. If you look at the diagram, start from point N move up 1.5 units and over 1.25 forming our mini triangle. You can see the x-axis has a value of -1.75.

If Dumisani earn $42480 per month and he splits his earnings in the ratio 7:5, then he saves $17,700 per month.

A ratio is a way of comparing two quantities or values. It expresses the relationship between two numbers or values in terms of their relative sizes or amounts.

To split Dumisani's earnings in the ratio 7:5, we need to divide his earnings into 7 + 5 = 12 equal parts.

Each part is therefore:

42480 ÷ 12 = 3,540

Dumisani saves the lesser amount, which is in the ratio of 5 parts to 7 parts.

So he saves:

5 × 3,540 = $ 17,700

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Answer:

21.2£

Step-by-step explanation:

Answer:

21.2£

Step-by-step explanation:

yw can I get brainiest tooo

To solve for x and y, we would need additional information, such as the length of one of the sides of the parallelogram or the measure of one of the angles.

Without this information, there are multiple possibilities for the values of x and y that could form a parallelogram. Therefore, the answer is none of the given options.

To better understand why additional information is needed, consider that a parallelogram has two pairs of parallel sides. This means that opposite sides are congruent and parallel to each other.

Without knowing the length of any of the sides or the measure of any of the angles, we cannot determine the lengths of the diagonals or the relationship between x and y.

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Answer:

Step-by-step explanation:

Given the following :

Number of laptops in 2015 = 759

t(x) = 75x + 759 ; model to determine number of laptops at the school. X years after 2015.

Number of laptops in the school in 2020:

Answer:

-18 y + 91 y = 73 y

(3, -7) y (-6, -13)  

{-18 y, 91 y}

g(h(0)):

answer: g[h(0)]=3