Can someone explain how to do this question step by step, please?

The first hiker is 2 miles east and 1 mile north of the starting point, so the position can be represented by the coordinate pair (2, 1).

What is the Pythagorean theorem in plain English?

In a right-angled triangle, the square of the hypotenuse side is equal to the sum of the squares of the other two sides, according to Pythagoras's Theorem. The Perpendicular, Base, and Hypotenuse are the names of the three sides of this triangle.

The second hiker is 2 miles west and 3 miles south of the starting point, so the position can be represented by the coordinate pair (-2, -3).

The Pythagorean theorem can be used to calculate the separation between the two points:

d = √((2 - (-2))²  + (1 - (-3))² ) = √((2 + 2)² + (1 + 3)²) = √(4² + 4²) = √(16 + 16) = √32

So, the two hikers are approximately 5.66 miles apart.

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The velocity of the two trains are 79m/s and 66m/s

Velocity is the rate of change of displacement with time. It is a vector quantity and it is measured in meter per second.

Using addition of vectors:

The total displacement = d2-d1

displacement = velocity × time

Represent the velocity of faster train by v

therefore the velocity of the slower train = v -13

855 = 5v +5(v-13)

855 = 5v+5v+65

855 = 10v +65

10v = 855-65

10v = 790

v = 790/10

v = 79 m/s

the rate of the second train = 79-13 = 66m/s

therefore the rate of the two trains are 79m/s and 66m/s

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The computed mean is 18.8 and it is more than 32.1 than the actual mean.

In statistics, in addition to the mode and median, the mean is one of the measures of central tendency. Simply put, the mean is the average of the values in the given set. It indicates that values in a particular data set are distributed equally. The three most frequently employed measures of central tendency are the mean, median, and mode. The total values provided in a datasheet must be added, and the sum must be divided by the total number of values in order to determine the mean.

The mean of the data is given as:

x' = ∑x / n

∑x = 29 + 13 + 6 + 45 + 1 = 94

x' = 94 / 5 = 18.8

The difference between the actual mean and the calculated mean is:

D = 50.9 - 18.8

D = 32.1

Hence, the computed mean is 18.8 and it is more than 32.1 than the actual mean.

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Answer:this is a rational number

Step-by-step explanation:

The number zero can be written as 0 ÷ any non-zero integer. For example, the rational numbers 0/1 and 0/(-2) are equal to 0. This is in the form of p/q, where p and q are integers and q ≠ 0.

Answer: The value of sin(2x) can be found using the identity:

sin(2x) = 2sin(x)cos(x)

Since sin(x) = -1/2, we can use the Pythagorean identity to find the value of cos(x):

cos^2(x) + sin^2(x) = 1

So

cos^2(x) = 1 - sin^2(x) = 1 - (-1/2)^2 = 1 - 1/4 = 3/4

Taking the square root of both sides:

cos(x) = ± sqrt(3)/2

Since sin(x) is negative and cos(x) must be positive, we get:

cos(x) = sqrt(3)/2

Finally, substituting the values of sin(x) and cos(x) into the formula for sin(2x), we get:

sin(2x) = 2sin(x)cos(x) = 2 * (-1/2) * sqrt(3)/2 = -sqrt(3)

So the exact value of sin(2x) is -√(3).

Step-by-step explanation:

Answer:

Уравнение 1 + tan(a) * tan(b) = (cos(a + b))/(cos(a) + cos(b)) может быть упрощено, используя тождество tan(a) * tan(b) = (sin(a) * sin(b))/(cos(a) * cos(b)) и тождество sin(a + b) = sin(a) * cos(b) + cos(a) * sin(b). Однако дальнейшее упрощение может быть невозможным, поскольку уравнение уже в довольно простой форме.

-p + 2p^2 is a quadratic function, which is a polynomial function of degree 2.

Quadratic function is a polynomial function of degree 2, written in the standard form as ax^2 + bx + c, where a, b, and c are constants, and x is a variable.

The graph of a quadratic function is a parabola which opens up or down depending on the value of a. The most common application of quadratic functions is in solving problems related to parabolic motion, such as finding the maximum height, time of flight, or range of a projectile.

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Answer:

80+90

add them together

=170

10% of 170

=17

20-17=3

d. Data is inadequate as it is not possible to determine the direction of D's house relative to A's house.

Directions refer to the relative positions of objects or locations in space. It describes the orientation and location of an object in relation to another object or a reference point.

Based on the information given, . Further information is needed to determine the direction.

Hence, d. Data is inadequate

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Answer: 3

Step-by-step explanation:

      The line y = 3x + 7 has a slope of 3. Slope-intercept form equations have a slope of m when written as y = mx + b. See the attached picture for more information.

y = mx + b ➜ y = 3x + 7 ➜ y = 3x + 7 ➜ 3

Answer:

Step-by-step explanation:

The ratio at which the y-value varies when the x-value changes is shown by a line's slope. The coefficient of x in the equation y = 3x + 7 is 3, therefore y rises by 3 units for every unit increase in x. The slope is thus 3. This indicates that the line will climb 3 units along the y-axis for every unit you move to the right along the x-axis.

Answer:

11 words

Step-by-step explanation:

Thera are 56 words shared equally among 7 lines

Therefore there are 56/7 = 8 words per line

On the last line by adding 3 words, there will be 8 + 3 = 11 words

Answer:

hacunamatata

Step-by-step explanation:

it means no worrys

The volume of the given prism in question is 276.7 cubic yd

The formula for calculating the volume of a square based prism is expressed as:

V = BH/3

where

B is the base area

H is the height of the prism

Determine the height using Pythagoras theorem

b^2 = 13^2 - 10^2

b^2 = 169 - 100

b^2 = 69

b = √69
b = 8.3yd

Determine the required volume

V = (10*10)(8.3)/3

V = 830/3

V = 276.7 cubic yd

Hence the volume of the prism is given as 276.7 cubic yd

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Z18 with modulo addition satisfies all four group axioms and is a group.

Z18 with modulo multiplication does not satisfy the inverse axiom and is not a group.

what is the binary operation?

In mathematics, a binary operation is a function that takes two elements from a set and returns another element from the same set.

For a set to form a group with a binary operation, the set must satisfy the four group axioms: closure, associativity, identity, and inverse.

1. Z18 with modulo addition:

Hence, Z18 with modulo addition satisfies all four group axioms and is a group.

2. Z18 with modulo multiplication:

Hence, Z18 with modulo multiplication does not satisfy the inverse axiom and is not a group.

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Research has found that people are happiest when they have 6 hours a day of face-to-face contact with others.

What is an experiment ?

A method used in a controlled environment to find an unknown effect or law, test or establish a hypothesis, or provide an example of an established law

In the scenario described, individuals are chosen at random to participate in a new intervention, which appears to be an example of an experiment.

Research has found that people are happiest when they have 6 hours a day of face-to-face contact with others.

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Research has found that people are happiest when they have 6 hours a day of face-to-face contact with others.

What is an experiment ?

A method used in a controlled environment to find an unknown effect or law, test or establish a hypothesis, or provide an example of an established law

In the scenario described, individuals are chosen at random to participate in a new intervention, which appears to be an example of an experiment.

Research has found that people are happiest when they have 6 hours a day of face-to-face contact with others.

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Therefore , the solution of the given problem of angle comes out to be sin α = 0.20 is between 10º and 1 and cos α = 0.32 is between 70º and 75º.

An angle, according to Euclidean geometry, is a shape comprised of two rays, referred as the angle's extremity, which meet at a vertex in the center. When two rays are combined, the surfaces on which they are focused may take on an angle. A plane collision also produces an angle. Dihedral angles are the name given to them. Angles are the shapes that two rays or lines with similar terminations can take in plane geometry.

Here,

a) he closest value to 0.32 is the cosine of 71.8º, which is approximately equal to 0.32.

Therefore, the angle α that satisfies

=>cos α = 0.32 is between 70º and 75º.

b) To find the value of the angle α that satisfies sin α = 0.20, it is necessary to look in the table of sine values ​​for angles of 0º, 30º, 45º, 60º and 90º, and find the closest value to 0.20.

The closest value to 0.20 is sine 11.5º, which is approximately equal to 0.20.

Therefore, the angle α that meets

=> sin α = 0.20 is between 10º and 1

Therefore , the solution of the given problem of angle comes out to be sin α = 0.20 is between 10º and 1 and cos α = 0.32 is between 70º and 75º.

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On solving the provided question, we can say that the statement that is true is D) The y-intercept of function K is less than the y-intercept of function H.

Mathematicians study numbers and their variations, equations and related structures, shapes and their places, and potential placements for these things. The term "function" refers to the relationship between a set of inputs, of which each has an associated output. An relationship of inputs and outputs known as a function is one in which each input leads to a single, distinct output. Each function is given a domain or a codomain, or scope. The letter f is frequently used to indicate functions (x). Entry is an x. The four major kinds of accessible functions are on functions, one-to-one capabilities, so several capabilities, in capabilities, and on functions.

Function K is given as y = 1/2x + 2, so the slope of K is 1/2 and the y-intercept of K is 2.

To find the slope and y-intercept of function H, we can use the given points (x,y):

When x = -2, y = 0, so we have the point (-2,0)

When x = 1, y = 4.5, so we have the point (1,4.5)

When x = 5, y = 10.5, so we have the point (5,10.5)

When x = 8, y = 15, so we have the point (8,15)

We can use two of these points to find the slope of H:

slope = (change in y) / (change in x) = (10.5 - 4.5) / (5 - 1) = 6/4 = 3/2

To find the y-intercept of H, we can use the point (0,b) where x = 0:

b = y - mx = 4.5 - (3/2)(1) = 3

So the equation for function H is y = (3/2)x + 3, which has a slope of 3/2 and a y-intercept of 3.

Now we can compare the two functions:

A) The slope of function K is greater than the slope of function H. False, since 1/2 < 3/2.

B) The y-intercept of function K is greater than the y-intercept of function H. False, since 2 < 3.

C) The slope of function K is equal to the slope of function H. False, since 1/2 ≠ 3/2.

D) The y-intercept of function K is less than the y-intercept of function H. True, since 2 < 3.

Therefore, the statement that is true is D) The y-intercept of function K is less than the y-intercept of function H.

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416 ÷ 100 = 4.16

4.16 ÷ 10 = 0.416

41600 ÷ 1000 = 4.1600 = 4.16

4.16 ÷ 100 = 0.0416

41.6 ÷ 100 = 0.416

When you divide by a power of 10, you move the decimal to the left the number of 0's in the number.

    ÷ 10 and you move the decimal point 1 place to the left

    ÷ 100 and you move the decimal point 2 places to the left

    ÷ 1000 and you move the decimal point 3 places to the left

Answer:

416 / 100 = 4.16

4.16 / 10 = 0.416

41600 / 1000 = 41.6

4.16 / 100 = 0.0416

41.6 / 100 = 0.416

Step-by-step explanation:

When you divide a number by another number, you find out how many times the second number fits into the first one. For example, in the expression 416 / 100, you are finding out how many times 100 fits into 416. The answer is 4.16, meaning 100 fits into 416 4 times with a remainder of 16.

Similarly, in the expression 4.16 / 10, you are finding out how many times 10 fits into 4.16. The answer is 0.416, meaning 10 fits into 4.16 0 times with a remainder of 4.16.

In the expression 41600 / 1000, you are finding out how many times 1000 fits into 41600. The answer is 41.6, meaning 1000 fits into 41600 41 times with a remainder of 600.

In the expression 4.16 / 100, you are finding out how many times 100 fits into 4.16. The answer is 0.0416, meaning 100 fits into 4.16 0 times with a remainder of 4.16.

In the expression 41.6 / 100, you are finding out how many times 100 fits into 41.6. The answer is 0.416, meaning 100 fits into 41.6 0 times with a remainder of 41.6.

The intervals at which the parabolic equation from the graph is decreasing is (4, ∞).

A parabolic equation is an equation of a curve usually in form of a U-shape when displayed on the graph. In the given diagram, we can use the standard form of a quadratic equation y = ax² + bx + c as the starting point for finding the equation through the three points of the curve.

Using the following points on the curve; (0,-2) (4,6), and (6,4), because these points pass along the x and y-axis of the curve.

Create a system of equations by substituting the x and y values of each point into the standard formula of a quadratic equation to create the three-equation system.

−2 = a(0)² + b(0) + c,

6 = a(4)² + b(4) + c,

4 = a(6)² + b(6) + c

Solve the system of equations to find the values of a, b, and c.

[tex]$$a= - \dfrac{1}{2}$$, b = 4, c = -2[/tex]

Substitute the actual values of a, b, and c into the formula for a quadratic equation to find the resulting equation.

[tex]y = - \dfrac{x^2}{2} + 4x - 2[/tex]

Since we know the resulting equation of the parabola, we can now deduce the intervals at which the parabola is decreasing. As such, the interval at which the parabolic equation is decreasing is (4, ∞)

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Answer:

House value x Tax rate = Taxes paid

172000 x 0.08 = 13760

Answer:

Carlos deposited $140 into his savings account, which can be represented by the signed number +140.

Step-by-step explanation:

This indicates an increase in his account balance of $140.

The consistent state lattice x is equivalent to (0.6, 0.9), and the stochastic matrix P is normal.

To decide if a stochastic grid P is standard, we should initially compute the consistent state matrix x of the Markov chain with a matrix of change probabilities P. To do this, we set up the situation Px = x and address for x.

We can communicate the components of x as far as a boundary t as follows:

x1= 0.5t + 0.1

x2= 0.5t + 0.9

We can then settle for t in view of the amount of x1 and x2. The amount of x1 and x2 ought to be equivalent to 1, so:

0.5t + 0.1 + 0.5t + 0.9 = 1

t = 1

Therefore, The consistent state lattice x is equivalent to (0.6, 0.9).

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As per the intersecting point, the length of AC is 4x + 10.

The diagonals of a rectangle are two lines that intersect at the midpoint of the rectangle. In this case, the diagonals of rectangle ABCD intersect at point E.

If AE = 2x + 5 and BD = 5x + 2, then we can calculate the length of AC. We know that AC is the sum of AE and ED, so AC = AE + ED.

Since the diagonals of a rectangle intersect at the midpoint of the rectangle, AE and ED are equal. Therefore, AC = 2x + 5 + (2x + 5) = 4x + 10.

Therefore, the length of AC is 4x + 10. Knowing the lengths of the diagonals can help us find the length of the sides of the rectangle, and can also be useful in finding the area of the rectangle

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The area and perimeter of the shape is 4.65cm² and 9.5cm

Perimeter of a triangle = a + b +c , where a, b and c are the three different sides of the triangle. Area of a triangle = 1/2 b × h; where b is the base and h is the height of the triangle.

A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted \triangle ABC.

Perimeter of the triangle = 3.2+ 2.0+4.3

= 9.5cm

The area of the triangle = ½bh

= 1/2 ×3.1 × 3

= 4.65 cm²

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Answer:

y = - x - 2

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (- 3, 1) and (x₂, y₂ ) = (2, - 4) ← 2 points on the line

m = [tex]\frac{-4=1}{2-(-3)}[/tex] = [tex]\frac{-5}{2+3}[/tex] = [tex]\frac{-5}{5}[/tex] = - 1

the line crosses the y- axis at (0, - 2 ) ⇒ c = - 2

y = - x - 2 ← equation of line

[tex](\stackrel{x_1}{4}~,~\stackrel{y_1}{8})\qquad (\stackrel{x_2}{12}~,~\stackrel{y_2}{2}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{2}-\stackrel{y1}{8}}}{\underset{\textit{\large run}} {\underset{x_2}{12}-\underset{x_1}{4}}} \implies \cfrac{ -6 }{ 8 } \implies - \cfrac{3 }{ 4 }[/tex]

The total cost for the rental is calculated by subtracting the first 50 miles from the total miles driven (430 miles) and then multiplying it by the per mile rate ($0.35/mile).

Miles is a unit of distance measurement. It is used for measuring the distance between two places. It is equivalent to 1.609 kilometers. Miles are used for measuring the length of roads, flight distances, distances between cities, and other large distances. Miles can also be used to measure the length of running, swimming, and cycling events. Miles are also used in the United States to measure the speed of vehicles, such as cars and airplanes.

This gives us a total cost of $118.50 for the miles driven. To calculate the total cost for the rental, we add the cost for the miles driven ($118.50) to the daily rate for the 2 days ($46.90 x 2 days = $93.80). This gives us a total cost of $212.30 for the rental.

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First triangle x = 30

Second triangle N = 55