answer fast please and thank you

Answer:

1/2

Step-by-step explanation:

please mark as brainliest

If two polygons are similar, then they have the same shape but not necessarily the same size.

They can be either enlarged or reduced in size or reflected. Hence, even though the polygons are similar, they do not have to be drawn to scale.

The term scale refers to the ratio of any two corresponding lengths in two geometric figures, so if two figures are drawn to scale, the ratio of their corresponding lengths in the drawing is the same as the ratio of their corresponding lengths in the actual figures.

Therefore, if two polygons are similar but not drawn to scale, the drawing may not be an accurate representation of the actual figures, as the scaling information may not be consistent.

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Answer: 1,665.98

Step-by-step explanation: Use the equation

:)

Answer:

180 units

Step-by-step explanation:

In order to solve this, we need to find the length of the missing side of the triangle using the Pythagorean theorem.

a²+b²=c²

a= 7

b=x

c= 25

7²+x²=25²

49+x²=625

Subtract 49 from both sides

x²=576

x=24

The length of the missing side of the triangle is 24, which is also the base of the triangle. We need to find the area of the triangle so we use the formula for the area of a triangle, A=1/2bh.

A= 1/2 (24 x 7)

A=84

Now, we need to find the area of the rectangle.

Formula for area of rectangle: A= bh

A= bh

A= 4 x 24

A= 96

Next, we add the areas of both shapes to get the area of the entire figure.

96+84=180

Area of figure= 180

Answer:

area = 180

Step-by-step explanation:

will make it simple and short

area of a trapezoid = (a + b) h/2

h = sqrt(25² - 7²) = 24

Area = (4 + 11) * 24/2

area = 180

There will be 30 trucks when there are 5 cars, maintaining the 1:6 ratio.

Given that the ratio of cars to trucks is 1:6, we can determine the number of trucks by multiplying the number of cars by the ratio. If there are 5 cars, we can calculate the number of trucks using the ratio.

Let's assume the number of trucks as "x." According to the given ratio, we have the equation:

1 car : 6 trucks = 5 cars : x trucks

To solve for x, we can set up a proportion:

1/6 = 5/x

Cross-multiplying, we get:

1 * x = 6 * 5

x = 30

Therefore, there will be 30 trucks when there are 5 cars, based on the given ratio of 1:6.

Alternatively, we can calculate the number of trucks by dividing the number of cars by the fraction representing the ratio:

Number of trucks = (Number of cars) / (Ratio of cars to trucks)

Number of trucks = 5 / (1/6)

Number of trucks = 5 * (6/1)

Number of trucks = 30

So, there will be 30 trucks when there are 5 cars, maintaining the 1:6 ratio.

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a) The sample space for four flights selected at random, with arrival status "O" for on-time and "L" for late, is given as {OOOO, OOOL, OOLO, OOLL, OLOO,  OLOL, OLLO, OLLL, LOOO, LOOL, LLOO, LLOL, LLLO, LLLL}.

b) The probability that a randomly selected flight is from Airline A and on-time, denoted as P(A), is calculated by multiplying the probability of being on-time for Airline A (75/100) with the proportion of flights operated by Airline A out of the total (320/1000), resulting in P(A) = 24/100.

c) The probability that a randomly selected flight is either from Airline C or on-time, denoted as P(C), is obtained by dividing the sum of flights on-time (700) and flights operated by Airline C (240) by the total number of flights (1000), giving P(C) = 94/100.

d) The probability that a flight is from Airline B given that it is late, denoted as P(B | L), is computed by multiplying the proportion of late flights (300/1000) with the probability of being from Airline B (35/100), resulting in P(B | L) = 77/300.

e) The probability that a flight is late given that it is from Airline A, denoted as P(L | A), is calculated by multiplying the proportion of flights on-time for Airline A (25/100) with the proportion of flights operated by Airline A (320/1000), resulting in P(L and A) = 8/100. Therefore, P(L | A) = 1 - P(A | L) = 11/15.

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Answer:

(x+4)(3x-2)(x+1)

Step-by-step explanation:

i) Based on exponential growth, Xavier's salary in 2015 is £44,274.

ii) The year that Xavier's salary first became greater than £47,500 would be 2019.

Exponential functions show the relationship between two variables and a variable exponent with a periodic constant rate of growth or decay in the value of something

Annual increase in Xavier's salary = 2% or 0.02

Xavier's salary in 2010 = £40,100

The number of years between 2015 and 2010 = 5 years

i) y = £40,100(1.02)^5

= £44,273.64

= £44,274

ii) £47,500 = £40,100(1.02)^t

t = 9 years

= 2019 (2010 + 9)

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Answer:

x = 9

m∠1 = m∠2 = 54°

Step-by-step explanation:

Two lines r and s are the parallel lines and a transversal line is intersecting these lines at two distinct points.

a). ∠1 ≅ ∠2 [Corresponding angles]

    Therefore, m∠1 = m∠2

    (63 - x)° = (72 - 2x)°

    2x - x = 72 - 63

    x = 9

b). m∠1 = (63 - x)°

            = 63 - 9

            = 54°

    m∠2 = (72 - 2x)°

             = 72 - 18

             = 54°

The difference quotient for the function f(x) is \(h+2x-7\)

Given :

Difference quotient formula

\(\frac{\left(f\left(x+h\right)-f\left(x\right)\right)}{h}\)

Given function \(f(x) = x^2 - 7x + 8\)

find the difference quotient using the formula

first we find out f(x+h) using given f(x)

replace x with x+h

\(f(x) = x^2 - 7x + 8 \\f(x+h)=\mathrm{ }\left(x+h\right)^2-7\left(x+h\right)+8\\Expand \; and \; simplify\\f(x+h)=x^2+2xh+h^2-7\left(x+h\right)+8\\f(x+h)=x^2+2xh+h^2-7x-7h+8\)

Now replace it in our formula and also replace f(x)

\(\frac{\left(f\left(x+h\right)-f\left(x\right)\right)}{h}\\ \frac{x^2+2xh+h^2-7x-7h+8-(x^2 - 7x + 8)}{h} \\\frac{x^2+2xh+h^2-7x-7h+8-x^2 + 7x - 8}{h} \\\\\frac{h^2+2xh-7h}{h}\\factor \; out \; h\\\frac{h\left(h+2x-7\right)}{h}\\h+2x-7\)

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Answer:

23/50

Step-by-step explanation:

27 + 23 = 50 (Implying that 50 is the total amount of tickets).

23 of them were sold to adults, so basically 23/50.

Remember a ratio can be written in 3 forms, so it can be either of these:

23:50

23/50

23 to 50

Answer:

1991.759

Step-by-step explanation:

1810.69×%10=181.069

1810.69+181.069=1991.759

To test the value of the mean in a population when only sample mean and sample deviation are known to perform the test then it is appropriate to use z-test procedure.

What is a Z-test?

A statistical method of testing a hypothesis is the z-test where either:

Additional prerequisites for using the z-test include the following:

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Jing worked 14 hours and Amare worked 28 hours. The equation and its solution demonstrate how to use algebra to solve a real-world problem.

The equation for this question is x + 2x = 42, where x represents the number of hours worked by Jing and 2x represents the number of hours worked by Amare. To solve this equation, we must divide both sides of the equation by 3, which gives us x = 14 and 2x = 28. This means that Jing worked 14 hours and Amare worked 28 hours.In this equation, the variable x represents the number of hours worked by Jing, which we can solve by dividing both sides of the equation by 3. On the left side of the equation, we are left with x, which equals 14. On the right side of the equation, we are left with 2x, which equals 28. This means that Jing worked 14 hours and Amare worked 28 hours. The equation and its solution demonstrate how to use algebra to solve a real-world problem. By using algebra, we can easily solve this problem and find the number of hours each person worked. This process can be used to solve other real-world problems, such as calculating the cost of items or the amount of time needed to complete a task. Algebra is an important tool that can be used to make calculations and solve problems quickly and accurately.

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15 is the total number of 17-year-old students in Mr. Greene's class

Let the number of 17-year-old students in Mr. Greene's class is x.

Since the total number of students in the class is 20, the number of 18-year-old students would be 20 - x.

The sum of the ages of the 17-year-old students would be 17x, and

the sum of the ages of the 18-year-old students would be 18(20 - x).

The sum of the ages of all the students is 345.

17x + 18(20 - x) = 345

Apply distributive property

17x + 360 - 18x = 345

-x + 360 = 345

Subtract 360 from both sides:

-x = 345 - 360

-x = -15

x = 15

Therefore, the total number of 17-year-old students in Mr. Greene's class is 15

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Greetings from Brasil...

According to the properties of the radiation:

X^(a/b) = \(\sqrt[b]{X^a}\)

So

X^(2/3) = \(\sqrt[3]{X^2}\)

And

Y^(-3/4) = 1/Y^(3/4)

so 1/Y^(-3/4) = Y^(3/4) = \(\sqrt[4]{Y^3}\)

Then we get

\(\sqrt[2]{X^3} .\sqrt[4]{Y^3}\)

Therefore, the value of f at the point (1,-2) to the surface z = 4x³y² + 2y is 12.

Given a surface: z = 4x³y² + 2y.

The function f is defined as follows: f(x, y) = 4x³y² + 2y.

(c) Compute f. (1,-2) to the surface z = 4x³y² + 2y.

Given, the point (1, -2).

To compute f, we need to find the value of z for x = 1 and y = -2

by substituting these values in the given equation of the surface.

z = 4x³y² + 2y

Putting x = 1 and y = -2, we get

z = 4(1)³(-2)² + 2(-2)

z = 16 + (-4)z = 12

Hence, option (b) is the correct answer.

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It's important to note that the resulting polynomial is not in P_3, as it has a degree of 4.

The student's question involves a linear operator L acting on a polynomial p(x) in P_3, the space of polynomials of degree 3 or less. The linear operator is defined as L(p(x)) = x * p'(x) * p''(x). Let's find the result of this operation step-by-step.

1. Determine the general form of a polynomial in P_3: A polynomial in P_3 has the form p(x) = ax^3 + bx^2 + cx + d, where a, b, c, and d are constants.

2. Compute the first derivative p'(x): To find the first derivative, differentiate p(x) with respect to x. We get p'(x) = 3ax^2 + 2bx + c.

3. Compute the second derivative p''(x): Next, differentiate p'(x) with respect to x. We get p''(x) = 6ax + 2b.

4. Compute the product x * p'(x) * p''(x): Multiply the first derivative, second derivative, and x together. We have (x)(3ax^2 + 2bx + c)(6ax + 2b).

5. Simplify the expression: After multiplying and combining like terms, we get L(p(x)) = 18a^2x^4 + 12abx^3 + 4a^2x^3 + 4b^2x^2 + 12acx^2 + 6bcx + 2cx^2.

This is the resulting polynomial after applying the linear operator L to a polynomial p(x) in P_3. However, it's important to note that the resulting polynomial is not in P_3, as it has a degree of 4.

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It depends on the rotational speed of the wheel. To calculate this speed, we need to know the angular velocity of the wheel.

The maximum speed of a point on the outside of the wheel, 15 cm from the axle, if we assume that the wheel is rotating at a constant rate, we can use the formula v = rω, where v is the speed of the point on the outside of the wheel, r is the radius of the wheel (15 cm in this case), and ω is the angular velocity of the wheel. Therefore, the maximum speed of a point on the outside of the wheel would be directly proportional to the angular velocity of the wheel.
The formula to calculate the maximum linear speed (v) is:
v = ω × r
where v is the linear speed, ω is the angular velocity in radians per second, and r is the distance from the axle (15 cm, or 0.15 meters in this case).
Once you have the angular velocity (ω) of the wheel, you can plug it into the formula and find the maximum speed of a point on the outside of the wheel.

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Answer:

D

Step-by-step explanation:

The Answer is D

Answer:

Somebody already answered lol but it’s D.

Step-by-step explanation:

I’m bored

The probability distributions whose graphs can be approximated by bell-shaped curves are commonly known as normal distributions or Gaussian distributions.

These distributions are characterized by their symmetrical shape and the majority of their data falling within a certain range around the mean. The normal distribution is widely used in statistics and is a fundamental concept in many fields of study, including psychology, economics, and engineering. The normal distribution is also known for its many practical applications, such as predicting test scores, stock prices, and medical diagnoses. In summary, the bell-shaped curve is a useful tool in probability theory that can help us understand and make predictions about a wide range of phenomena. The probability distributions whose graphs can be approximated by bell-shaped curves are called Normal Distributions or Gaussian Distributions. They have a symmetrical shape and are characterized by their mean (µ) and standard deviation (σ), which determine the central location and the spread of the distribution, respectively.

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The throw of the dice or the drawing of a card is known as random behavior.

Random behavior refers to events that occur by chance, without any predictability or pattern. These events cannot be influenced or controlled, and their outcomes are determined by the laws of probability. In games such as dice and card games, the outcomes are determined by random variables, such as the position of the dice or the shuffle of the deck.

Random behavior can also occur in other contexts, such as weather patterns or the stock market, where events are subject to unpredictable fluctuations. Understanding random behavior is important in many fields, including mathematics, statistics, and economics, as it can help us make informed decisions based on the probability of different outcomes.

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Answer:

X= 6.4   ∠A=68.8

Step-by-step explanation:

We know that these 2 angle must equal 180 so we use the equation:

180=7x+24+3x+92

OR

180=7x+3x+24+92

Then, we add like terms (both variable and numbers)

180=10x+116

After that, we solve

180=10x+116

-116        -116

__________

64=10x

________

64/10 = x

________

6.4=x

Now that we have found x, we can plug in x to figure out the new equation to find the angle of A (or B).

∠A= 7(6.4)+24

If we solve that, it would be:

∠A=44.8+24

___________

∠A=68.8

The transformed function g(x) = |x + 9| - 5 has a vertex at (- 9, - 5).

We know the absolute value function of the modulus function always outputs a positive value irrespective of the sign of the input.

In piecewise terms  | x | = x for x ≥ 0 and | x | = - x for x < 0.

Given, The parent function is f(x) = |x|.

Now, The transformed function g(x) = |x + 9| - 5 is shifted x + 9 = 0 ⇒ x = - 9 units along the x-axis and - 5 units along the y-axis.

The vertex of the modulus function is at (- 9, - 5).

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If a bloodstain has measurements of 30 cm and 15 cm, the angle of impact is going to be 30 degrees.

The angle of impact can be defined as the angle formed when a blood droplet hits the surface of any object. It is usually an acute or right angle.  It is important since it becomes a useful factor in many criminal investigations.  

It is used using the formula = arcsin(w/l) (i)

Here, it has been mentioned that the width, w is = 15 cm (ii)

The length of the blood stain is = 30 cm (iii)

Using the values of (ii) and (iii) in (i), we get -

= arcsin(15/30)

= 30 degrees

Hence, using the formula we know that the angle of impact is 30 degrees.

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Answer

A) 4/11 B)7/11

Step-by-step explanation:

because there is 11 letters in PROBABILITY four are vowels and 7 are consonants. That means 4/11 chance can be a vowel

Answer:

A:

5 in 26

B:

19 in 26

Step-by-step explanation:

There are 5 vowels and 26 letters in the alphabet.

There are 19 consonants.

:)

Answer:

14

Step-by-step explanation:

Since m = 7,

98/m = 98/7 = 14

A polynomial function of degree n has at most n real zeros and at most n - 1 turning points.

Function is a type of relation, or rule, that maps one input to specific single output.

In mathematics, a function is an expression, rule, or law that describes the relationship between one variable (the independent variable) and another variable (the dependent variable) (the dependent variable). In mathematics and the physical sciences, functions are indispensable for formulating physical relationships.

Linear function is a function whose graph is a straight line

We are given that;

A polynomial function

Now,

Because of the Fundamental Theorem of Algebra states that a polynomial function of degree n has exactly n complex roots (or zeros), some of which may be repeated or non-real. The number of real roots is equal to or less than the number of complex roots.

A turning point is a point where the graph of the polynomial function changes direction from increasing to decreasing or vice versa. The number of turning points is equal to or less than one less than the degree of the polynomial function. This is because each turning point corresponds to a change in the sign of the first derivative of the function, and the first derivative is a polynomial function of degree n - 1.

Therefore, by the function the answer will be n - 1.

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