This figure is made from a square and part of a circle. What is the area of the figure, to the nearest whole number square unit?

This Figure Is Made From A Square And Part Of A Circle. What Is The Area Of The Figure, To The Nearest

Answers

Answer 1

According to the problem,The area of the figure is approximately 34 square units.

What is the square ?

A square is a four-sided plane figure where all sides are equal length and all angles are right angles. It is a two-dimensional shape with four equal-length sides and four equal angles of 90°. Squares are often used in designs and architecture, and are an important part of Euclidean geometry. They are also found in nature, such as in a honeycomb, in a checkerboard pattern, and in tessellations.

To calculate this, we need to calculate the area of the square and the area of the circle's segment. The side of the square is 4 units, so the area of the square is 4 x 4 = 16 square units. The radius of the circle is also 4 units, so the area of the circle's segment is (1/2)πr^2, which is (1/2)π(4^2) = 16π/2 = 16 x 3.14/2 = 24.96 square units.

Therefore, the area of the figure is 16 + 24.96 = 40.96 square units, which is approximately 34 square units to the nearest whole number.

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Related Questions

What is the answer to -7(x-2)+4=46

Answers

Answer:

x= -4

Step-by-step explanation:

-7(x-2)+4=46

-7x+14+4=46

-7x=46-18

-7x=28

x=28/-7

x= -4

Answer:

-4

Step-by-step explanation:

Hope it helps! =D

Given (x – 7)2 = 36, select the values of x.
a. x = 13
b. x = 1
c. x = –29
d. x = 42

Answers

The value of x for the expression (x – 7)² = 36 is 13. The correct option is A.

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that the expression is  (x – 7)² = 36. The value of x will be calculated as:-

(x – 7)² = 36

(x – 7) = √36

(x - 7) = 6

x = 13

Hence, the value of x for the expression (x – 7)² = 36 is 13. The correct option is A.


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Please help I have a learning disablity and need help.
What is the coefficient in the expression?
10 – 6 + 5n

5
6
10
5n
-6

Answers

5 is the coefficient

A 1800 kg car with the brakes applied comes to a stop in 7.90 s. During these 7.90s the force of friction slowing down the car is 2800 N. What is the change in momentum of the car?

Answers

The change in momentum is 22120Ns

What is change in momentum ?

The change in momentum (Δp ) is defined as the change in the product of an object's mass and velocity. A force is required to change the momentum of an object. This applied force can increase or decrease the momentum or even change the object's direction.

Therefore the change in momentum = Final momentum - initial momentum

i.e mv -mu

where m is the mass

v is the final velocity

u is the initial velocity

The change of momentum is also called impulse. impulse is the product of the force and the time in applying it.

Change in momentum = force × time

= 2800× 7.90

= 22120 Ns

Therefore the change in momentum of the car is 22120Ns

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x+y=3 2x+2y=6 how do i solve this using substitution

Answers

Answer:

X = 0

Y = 3

Step-by-step explanation:

To solve using substitution, you would solve one equation and substitute it into the other to get that x or y value, then you would use that found value on any original equation.

x+y=3 2x+2y=6

Using the first equation, if we subtract x

y = -x+3

Lets put this into the second equation

2x + 2y = 6

2x + 2(-x+3) = 6

2x + 2x + 6 = 6

4x = 0

x = 0

Now that we have X, we can plug it into any original equation. let's do the first cause it's easier

x+y=3

0+y=3

y=3

We can use the other too

2x+2y=6

2(0)+2y=6

0+2y=6

y=3

what does the slope mean for the relationship between the number of practices and the number of performances?

Answers

The values of the slope and y-intercept provide details on the relationship between the two variables, x and y. The slope shows how quickly y changes for every unit change in x. When the x-value is 0, the y-intercept shows the y-value.

The rate of change between two variables is shown by the slope of the line in a scatter plot. The slope would show how much the number of performances varies with a change of one unit in the number of practises in the connection between the two numbers.

If the slope is upward, then as the number of practises rises, so do the number of performances. If the slope is negative, then fewer performances will occur as the number of practises rises.

The slope's magnitude tells us how steep the line is, which tells us how strongly the two variables are related.

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Add or subtract. 1/x^3+y^3 see image for the whole problem

Answers

Answer:

[tex] \frac{1}x{} [/tex]

Justin and Daniel work at a dry cleaners
ironing shirts. Justin can iron 40 shirts per
hour, and Daniel can iron 20 shirts per hour.
Daniel worked 6 more hours than Justin and
they ironed 360 shirts between them.
Graphically solve a system of equations in
order to determine the number of hours
Justin worked, x, and the number hours
Daniel worked, y.

Answers

On solving the provided question, we can say that the linear equation formed will be y = -2x+18

What is a linear equation?

A linear equation is one that has the form y=mx+b in algebra. B is the slope, and m is the y-intercept. It's usual to refer to the previous clause as a "linear equation with two variables" because y and x are variables. The two-variable linear equations known as bivariate linear equations. There are several instances of linear equations: 2x - 3 = 0, 2y = 8, m + 1 = 0, x/2 = 3, x + y = 2, and 3x - y + z = 3. It is referred to as being linear when an equation has the form y=mx+b, where m stands for the slope and b for the y-intercept.When an equation has the formula y=mx+b, with m denoting the slope and b the y-intercept, it is referred to as being linear.

In xx hours, Justin can iron 40x40x shirts since he can iron 40 shirts every hour. Daniel can iron 20 shirts each hour, or 20y20y shirts, in y hours. There were 360 shirts ironed in all (40x+20y):

[tex]40x+20y=360\\40x+20y=360\\x+y=14\\40x+20y= 360\\x+y=14\\40x+20y = 360 x+y = 14 20y = -40x+360 \\y = -2x+18[/tex]

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can you please help me

Answers

Lexi's reasoning is correct because the theoretical probability of picking a yellow golf ball is 1 out of 2, or 1/2. This is because there are two yellow golf balls in the bag and one ball is being selected.

Determine whether Lexi's reasoning is correct?

Theoretical probability is the ratio of the number of outcomes for a certain event to the total number of possible outcomes.

In this case, Lexi found the ratio of one yellow golf ball to the total number of balls in her bag (two balls: one yellow and one green).

This equals a theoretical probability of 1/2 or 0.5, meaning there is a 50% chance of picking a yellow golf ball.

This is the correct way to calculate theoretical probability.

Lexi's reasoning is correct in this situation. The theoretical probability of picking a yellow golf ball is 1 out of 2, or 1/2. This is because there are two yellow golf balls in the bag and one ball is being selected.

This ratio of 1/2 is the same as the theoretical probability of picking a yellow golf ball. Theoretical probability is based on the ratio of the outcomes being considered to the total number of possible outcomes.

In this case, the two yellow golf balls represent the possible outcomes, and the total number of golf balls in the bag is two. Therefore, the theoretical probability of picking a yellow golf ball is 1/2.

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an f1,v random variable can be thought of as the square of what kind of random variable

Answers

The type of random variable is continuous

The term called variable in math is known as a quantity that may change within the context of a mathematical problem or experiment.

Here we know that the f1,v random variable can be thought of as the square.

Here the term random variable is known as a set of possible values from a random experiment and the domain of a random variable is called sample space

As we all know that random variables are classified into discrete and continuous variables.

Here the main difference between the two categories is the type of possible values that each variable can take.

The value of the function is continuous one.

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Reflect the point (13, 8). across the y-axis. What is the result?​

Answers

The image of the point after the reflection across the y-axis is:

(-13, 8)

What is the image of the point after the reflection?

Remember that for a general point (x, y), a reflection across the y-axis just changes the sign of the x-component, so the new point will be:

(-x, y)

Here we want to apply this reflection to (13, 8), using the rule above, we can see that the new coordinates after the reflection are:

(-13, 8)

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Match each expression to its equivalent standard form.
x2 + 2x + 2
x2 - 4x - 4
x2 + 4
x2 + x + 2
x2 - 4x + 8
x2 + 16
(x + 2i)(x − 2i)
arrowBoth
(x + 1 + i)(x + 1 − i)
arrowBoth
(x − 2 + 2i)(x − 2 − 2i)
arrowBoth

Answers

The requried match to the expression is given as,
x²+ 2x + 2             (x + 1 + i ) (x + 1 − i)
x² - 4x + 8             (x − 2 + 2i)(x − 2 − 2i)
x² + 4                     (x + 2i)(x − 2i)

What is simplification?

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

here,
1. expression,
= x²+ 2x + 2

Simplifying the above expression,
= x²+ 2x + 2

We know that,

x = -b ± √{b² - 4ac} / 2a
x = -2 ± √(4 - 8)/2
x = -1 ± i    (i = √-1)

So,
The factored form of the given expression is given as,
= (x + 1 + i ) (x + 1 − i)

Similarly,
x² - 4x + 8 = (x − 2 + 2i)(x − 2 − 2i)
x² + 4 = (x + 2i)(x − 2i)

Thus, following the pattern of each expression to its equivalent standard form can be determined.

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Part 1 of 2
All the workers in a company were asked a survey question. The two-way frequency table shows the responses
from the workers in the day shift and night shift. Complete parts a and b.

Answers

The column cells are similarly filled by dividing the column cells by the corresponding column totals.

What is meant by frequency table?

A table that displays the distribution of a characteristic's occurrence frequency in accordance with a specific set of class intervals.

Two sorts of data, or data in two categories, one pertaining to the columns and the other to the rows, make up a two-way relative frequency table.

                                Response                              

Shift                             Yes                 No                      Total

Day                            67%                  33%                     100%          

Night                         23%                  77%                      100%            

Total                          45%                   55%                    200%        

This table contains information about two categories, day/night and yes/no.

The day/night data percentages are computed along the rows.

The percentages of the yes/no values are calculated along the columns.

Shift                                     Response                              

                         Yes                        No                        Total

Day                  67/100 × 100           33/100 ×100           100

                            = 67%                  =33%                     100%

Night                23/100×100           77/100×100               100

                         = 23%                     =77%                        100%

Total              90/200×100               110/200×100           200

                        = 45%                       =   55%                   200%

To make these computations, divide the row cells by the corresponding row totals.

The column cells are similarly filled by dividing the column cells by the corresponding column totals.

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[WILL GIVE BRAINLIEST HELPPP!!]
Determine the value of x.

Answers

Answer: 14.46

Step-by-step explanation:

sin 56 = 12/x

0.83 = 12/x

0.83x = 12

x = 12/0.83

x = 14.46

Answer: 14.475

Step-by-step explanation:

Since we are given the angle 56°, this means that the other angle is 34°. We are given the side 12 this means that x, or the hypotenuse, is 14.475.

The hypotenuse is c, b is 12, and a is the side with the 90° angle.

What we do is c = a/sin(a) = b / sin(56°)

the area under the standard normal probability density function from negative infinity to z is interpreted as the probability that the random variable is:

Answers

The area under the standard normal probability density function from negative infinity to z is interpreted as the probability that the random variable takes a value less than or equal to z.

In order to model continuous phenomena or quantities that depend on chance, such as time, length, and mass, continuous random variables are utilized.

The likelihood that the random variable takes a value inside that interval is defined as the area under the density function over an interval. Therefore, the probability that the random variable will have a value less than or equal to z is given by the area under the normal curve from negative infinity to z.

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Hello what is -5/9 divided (- 1/3) as a simplest form?

Answers

The answer to the question 5/9 divided (- 1/3) as a simplest form is 5/3

What is quotient of a number?

The number we obtain when we divide one number by another is the quotient. For example, in 8 ÷ 4 = 2; here, the result of the division is 2, so it is the quotient. 8 is the dividend and 4 is the divisor.

The question -5/9 divided (- 1/3) can be re-written as

-5/9 ÷ -1/3

-5/9 x -3/1

=15/9

=5/3

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Maureen bought a new car worth $26,525 one year ago. She knows that her car's value will depreciate each year. She uses an online calculator to find that her car is worth $24,403 today. Write an exponential equation in the form y = a(b) that can model the value, y, of Maureen's car x years after purchase. Use whole numbers, decimals, or simplified fractions for the values of a and b. ​

Answers

The equation to model the value of Maureen's car x years after purchase can be written in the form of y = a(b)^x , where y is the value of the car, x is the number of years after purchase, and a and b are constants.

Using the information given, we can find the values of a and b.

We know that the value of the car one year after purchase is $24,403.

So, we can substitute this value into the equation:

24403 = a(b)^1

We also know that the car's original value is $26,525

So we can substitute this value into the equation:

26525 = a

Now we can use these two equations to find the value of b

24403 = 26525 (b)^1

b = 24403 / 26525

b = 0.9153

So the final equation is:

y = 26525 (0.9153)^x

where y is the value of the car, x is the number of years after purchase, and a = 26525 and b = 0.9153

Use the long division method to find the result when x³ + 3x² + 5x + 6 is divided
by x + 2.
i hate deltamath.

Answers

[tex](x + 2)x( {x }^{2} + x + 3)[/tex]

Explain why∣2x+5∣=−7 has no solutions.​

Answers

Absolute value represents how far you are from zero on the number line.

Examples:

-27 is 27 units from zero, so |-27| = 2734 is 34 units from zero, so |34| = 34

The output of an absolute value function is never negative. Negative distance does not make sense. Therefore, we have no way to reach an output of -7. This is why we have no solutions here.

Compare the rates of change of the following items
y = 0.25 +2
a line with y-intercept (0, 2) which
passes through the point (2.6)
A The rate of change of item I is greater than the rate of change of item I
B. The rate of change of item I is equal to the rate of change of item I
C. The rate of change of item ill is greater than the rate of change of item

Answers

Answer:

The rate of change of a linear function is its slope, which is the coefficient of the x-term in the equation.

Item I: y = 0.25x + 2

The slope of this line is 0.25.

Item II: y = 2

This is a horizontal line with zero slope, so it has a rate of change of 0.

The slope of Item I is greater than the slope of Item II, therefore option C is correct: "The rate of change of item I is greater than the rate of change of item II".

Step-by-step explanation:

suppose that an average person has a heartbeat of 71.2 beats per minute. how many heartbeats will the person have in 2.000 years?

Answers

Answer:

Step-by-step explanation:

if you meant just 2 years the answer is 74,845,440 if you meant 2,000 its 74,845,440,000

The number of heartbeats for a person with an average heartbeat of 71.2 BPM for 2,000 years is 86,567,520,000 heartbeats.

The formula to calculate the number of heartbeats in a given period of time is:

Number of heartbeats = Beats per minute (BPM) x Minutes in the period

In this case, the given information is the BPM (71.2) and the period of time is 2,000 years, which is equal to 1,209,600,000 minutes.

Therefore, the number of heartbeats for a person with an average heartbeat of 71.2 BPM for 2,000 years is:

Number of heartbeats = 71.2 BPM x 1,209,600,000 minutes

Number of heartbeats = 86,567,520,000 heartbeats.

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Let f(x)=√x with f:R→R. Discuss the properties of f. Is it injective, surjective, bijective, is it a function? Why or why not? Under what conditions change this?Explain using examples.I'm having some trouble figuring out this equation.

Answers

The function f(x)=√x with f:R→R is injective and surjective but not bijective.

Injective (or one-to-one): f(x) is injective, which means that if f(x1) = f(x2), then x1 = x2. In other words, if the square root of x1 is equal to the square root of x2, then x1 and x2 are equal.

Surjective (or onto): f(x) is surjective, which means that for every y in the codomain (R), there exists an x in the domain (R) such that f(x) = y. In other words, the square root of any real number can always be expressed as a real number.

Bijective: f(x) is not bijective. The square root function is not bijective because it is not defined for negative values of x.

Function: A function f is a function if for every x in the domain of f, there is exactly one y in the codomain of f such that f(x) = y. In other words, each x in the domain is mapped to exactly one y in the codomain.

In the case of f(x) = √x, it is a function. For every x in the domain of f, which is [0,∞), there is exactly one y in the codomain of f, which is [0,∞), such that f(x) = y.

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A triangle having area of √135 square meter and perimeter 18 meter has a side 4 meter. Find the measurement of remaining two sides.

Answers

The required measurement of the remaining two sides of the given triangle are 8 and 6 meters.

What is the Heron's formula?

Heron's formula is a formula for calculating the area of a triangle in terms of the lengths of its sides that is credited to Heron of Alexandria.

Given that, a triangle having area of √135 square meter and perimeter 18 meter has a side 4 meter.

Let other two sides be x and y,

Therefore,

x + y + 4 = 18

x + y = 14.....(i)

Now, according to Heron's formula,

Area of a triangle = √s(s - a)(s - b)(s - c) where s is half the perimeter, or (a + b + c) / 2.

Therefore,

√9(9 - 4)(9 - x)(9 - y) = √135

Squaring both sides

45(9-x)(9-y) = 135

(9-x)(9-y) = 3

81 -9y - 9x + xy = 3

9(x+y)-xy = 78

Put x+y = 14 from eq(i)

9×14-xy = 78

xy = 48

Now finding the factors of 48

48 = (6, 8), (12, 4), (24, 2), (16, 3), (48, 1)

If we consider (6, 8) this is satisfying eq(i)

6+8 = 14

Therefore, we can say the other two sides of the triangle are 8 and 6.

Hence, the required measurement of remaining two sides of the given triangle are 8 and 6 meters.

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An electronic scale in an automated filling operation stops the manufacturing line after three underweight packages are detected. Suppose that the probability of an underweight package is 0.001 and each fill is independent. a. What is the average number of fills before the line is stopped? b. What is the standard deviation of the number of fills before the line is stopped?

Answers

The average number of fills before the line is stopped is 1000 and the standard deviation is 31.62. This means that over many repetitions of the automated filling operation, the number of fills before the line is stopped will tend to be around 1000, with most values falling within 31.62 units of 1000

An electronic scale in an automated filling operation is a device used to measure the weight of packages filled with a certain product. The purpose of the scale is to ensure that each package is filled with the correct amount of product. In this case, the scale stops the manufacturing line after three underweight packages are detected.

a. The average number of fills before the line is stopped can be calculated using the formula for the expected value. The expected value is the average outcome of a random process over many repetitions. In this case, the random process is the number of fills before the line is stopped. The expected value can be calculated as follows: E(x) = 1/p, where p is the probability of an underweight package. Plugging in the value of p = 0.001, we get E(x) = 1/0.001 = 1000. So, the average number of fills before the line is stopped is 1000.

b. The standard deviation of the number of fills before the line is stopped can be calculated using the formula for the standard deviation of a Poisson distribution. The Poisson distribution is a discrete probability distribution that is used to model the number of events in a fixed interval of time or space. In this case, the events are underweight packages. The standard deviation can be calculated as follows: σ = √(λ), where λ is the expected value. Plugging in the value of λ = 1000, we get σ = √(1000) = 31.62. So, the standard deviation of the number of fills before the line is stopped is 31.62.

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b) The average of 9 numbers is 23. If the average of first five numbers is 20 and
that of last five numbers is 25, what is the fifth number?

NEXT QUESTION:

c) The average age of a husband and wife was 23 years at the time of their
marriage. After 10 years, they have now a daughter of 6 years, what is he
average age of the family at present?

Answers

Answer:

b)

Step-by-step explanation:

As here it's stated that average of first 9 numbers is 23

so,

sum of 9 numbers = 9×23 = 207

Average of first 5 numbers is 20

so,

Sum of first 5 numbers = 5×20 = 100

Sum of remaining numbers = 207-100 = 107

Average of last five numbers = 25

So,

Sum of last five numbers = 5×25 = 125

Fifth Number = Sum of last five numbers- Sum of remaining numbers

                      = 125 - 107 = 18

if o b pi and the area under the curve y=sinx from x=b to x=pi is 0.4, what is the value of b

Answers

The value of b is 0.927. Therefore, the correct answer is option A.

To find b, we need to substitute the given values into a formula for computing the area under a curve. The formula for the area under the curve y=sinx from x=b to x=π is:

Area = ∫πb sinxdx

We do this by splitting the integral into the following two parts:

Area = ∫πbg+∫bg sinxdx

We can evaluate the first integral easily, since bg is a constant:

∫πbg=bg∫π=bgπ

For the second integral, we use integration by substitution:

Let u=x −b, so du=dx. Then the integral can be rewritten as:

∫bg sinx dx=∫bg sin(u+b)du

Where u varies from 0 to π−b. Now that the integral is in a form we can easily integrate:

∫bg sin(u+b)du=∫π−b0 sin(u+b)du

And using the Pythagorean identity:

sin(u+b)=sinubcosb+cosubsinb

We can rewrite the integrand as:

sin(u+b)=sinucosb−cosusinb

And then using integration by parts:

∫π−b0 sin(u+b)du=−cosubcosb|π−b0+∫π−b0 cosusinbdu

And the second integral can be simplified the same way we did the first one.

∫π−b0 cosusinbdu=−sinubsinb|π−b0+∫π−b0 sinubcosbdu

Which can be easily calculated as:

∫π−b0 cosusinbdu=π−b2sinbcosb

Now that both integrals are solved, we can substitute them back into the formula for the area and then solve for b:

Area=bgπ+π−b2sinbcosb

Substituting the value for the Area, we get:

0.4=bgπ+π−b2sinbcosb

Which can be simplified to:

b(π−b)=(π−0.4)/sinbcosb

Solving for b, we get:

b=0.927

Therefore, the correct answer is option A.

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"Your question is incomplete, probably the complete question/missing part is:"

If 0≤b≤π and the area under the curve y=sinx from x=b to x=π is 0.4, what is the value of b?

A) 0.927

B) 1.159

C) 1.982

D) 2.214

HELP ME PLSS!?!?



In the mall you receive a coupon for $5 off of a pair of jeans when you arrive at the store you find that all jeans are 25% off

.let x represent the original cost of the jeans
.the function f(x)=x-5 represents the cost of the jeans if you use the coupon
.the function g(x)=0.25x represents the cost of the jeans if you apply the store discount of 25% first

Write a function: H(x) that represents how much you would pay if you use the mall coupon that followed by applying the discount from the store??

Answers

The price of the jeans will be $27 if you apply the function  composition h(x). The price of the jeans will be $30 if you apply the composition j(x). Because it is less expensive.

what is function?

The subject of mathematics includes quantities and their variations, equations and related structures, shapes and their locations, and places where they can be found.

If you first use the coupon and then utilize the shop discount, the price of the jeans is represented by the function h(x). The combination of the functions f(x) and g may be used to calculate the function h(x) (x). If you first apply the shop discount and then utilize the coupon, the cost of the jeans is represented by the function j(x). The combination of the functions g(x) and f may be used to calculate the function j(x) (x).

The price of the jeans will be $27 if you apply the composition h(x). The price of the jeans will be $30 if you apply the composition j(x). Because it is less expensive, the composition h(x) will provide you a bigger discount.

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please please helppppp

Answers

Answer:

D

Step-by-step explanation:

Yes... Is D................

How can you show that the set of number of the form a + b√2 , where a and b are sizable rational numbers is a field with respect to addition and multiplication?

Answers

We have to show that the set of numbers of the form a + b√2, where a and b are rational numbers, forms a field with respect to addition and multiplication.

To start, we need to show that the set of numbers is closed under addition and multiplication. This means that if we add or multiply two numbers in the set, the result must also be in the set.

For addition, let's take two numbers in the set, say (a1 + b1√2) and (a2 + b2√2). When we add them, we get (a1 + a2) + (b1 + b2)√2. Since a1, a2, b1, and b2 are all rational numbers, their sum is also a rational number. So, the result of adding two numbers in the set is always another number in the set, which means that the set is closed under addition.

For multiplication, let's take two numbers in the set, say (a1 + b1√2) and (a2 + b2√2). When we multiply them, we get (a1a2 + 2b1b2) + (a1b2 + a2b1)√2. Again, since all the numbers involved are rational, the result is also a rational number. This means that the set is closed under multiplication as well.

Next, we need to show that the set satisfies the commutative, associative, and distributive laws for both addition and multiplication. This means that the order in which we add or multiply numbers in the set does not matter, and that addition and multiplication can be combined in a predictable way.

The commutative, associative, and distributive laws for addition and multiplication are well-known for rational numbers, and it can be easily verified that they hold for this set as well.

Finally, we need to show that the set has additive and multiplicative inverses. This means that for each number in the set, there exists another number in the set such that when added (or multiplied) to the original number, the result is 0 (or 1).

It can be shown that for any number of the form a + b√2, its additive inverse is -a - b√2, and its multiplicative inverse is (a / (a^2 + 2b^2)) - (b / (a^2 + 2b^2))√2, assuming that a^2 + 2b^2 is not equal to 0. Both of these are also rational numbers, since they are obtained by dividing rational numbers.

So, we have shown that the set of numbers of the form a + b√2, where a and b are rational numbers, is closed under addition and multiplication, satisfies the commutative, associative, and distributive laws, and has additive and multiplicative inverses. This means that the set of numbers forms a field with respect to addition and multiplication.

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(a) estimate the area under the graph of f(x)=55−x2 from x=−2 to x=4 using three approximating rectangles and right endpoints.

Answers

By splitting the range into three equal pieces and approximating the area under the graph using rectangles with right endpoints, the area under the graph of f(x) from x=-2 to x=4 is calculated.

Area = (55 - (-2)^2) + (55 - (1)^2) + (55 - (4)^2) = 55 + 9 + 1 = 65

By splitting the interval into three equal pieces and approximating the area under the graph using rectangles with right endpoints, the area under the graph of

f(x)=55x2 from x=2 to x=4

is calculated. We begin by calculating the area of the rectangle whose right endpoint is at

x = -2. F(-2)

provides the height of this rectangle, which is equal to

55 - (-2)2 = 55 + 4 = 59.

The rectangle's width is

(4 - (-2))/3 = 6/3 = 2.

The area of this rectangle is therefore 59 x 2 = 118. The area of the rectangle with x = 1 as its right terminus can also be determined in a similar manner. This rectangle has a height of f(1), which equals

55 - (1)2 = 55 - 1 = 54.

The rectangle's width is

(4 - (-2))/3 = 6/3 = 2

The area of this rectangle is therefore 54 x 2 = 108. f(4), which equals 55 - (4)2 = 55 - 16 = 39, gives the area of the rectangle with x = 4 as the right endpoint. The rectangle's width is

(4 - (-2))/3 = 6/3 = 2.

The area of this rectangle is therefore 39 x 2 = 78. The sum of the areas of the three rectangles, which equals 118 + 108 + 78 = 304, represents the total area under the graph.

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