Problem solving
the radius of the two larger sectors is
7.8 cm
the radius of the two smaller sectors in
4.2 cm
work out the total area of the shape.

Answers

Answer 1

The total area of both the circles as calculated from the data given is found out to be as 246.64 cm² .

The formula to calculate the area of a circle is,  (pi)r² where r = radius.

Therefore, the area of the first circle is found out to be as ,

22/ 7 x 7.8 x 7.8

=191.2 cm²

and the area of second circle will be ,

22/7 x 4.2 x 4.2

= 55.44 cm²

Therefore, the sum of the areas of the circle will be ,

191.2 + 55.44

= 246.64 cm² .

The area of a shape is known as the space occupied by it in tw dimensional space.

Every figure has a specific area and can be found by using unique formulas. The formula to calculate the area of a circle is  (pi)r².

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Related Questions

jan created a garden that was 8.5 yards long and 5.95 yards wide. what is the difference between the length and width of the garden

Answers

The difference between the length and width of the garden is 2.55 yards.

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

Given that jan created a garden that was 8.5 yards long and 5.95 yards wide.

Length=8.5 yards

Width=5.95 yards.

We need to find the difference between the length and width of the garden.

8.5-5.95

Eight point five minus five point nine five

2.55

Hence,  the difference between the length and width of the garden is 2.55 yards.

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a $300 trampoline is 25% off . what is the sale price of the trampoline ?

Answers

Answer: The sale price would be 225.00

The selling price of the trampoline will be $225.


What is the percentage?

The percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.

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 there is a 25% discount on the price $300. The discounted price will be calculated as:-

Discounted price = 300 x 0.75

Discounted price = $225

Therefore, the selling price of the trampoline will be $225.

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If −n Please answer fast!!!

Answers

hi

Step-by-step explanation:

Answer: If you are bored, try Khan Academy, or answer questions on brainly.

8 multilpy (3y mulitply 0.5)

Answers

Answer:

Step-by-step explanation:

8(3y + 0.5) so first we do 8 * 3 = 24y and 8 * 0.5 = 4. Then that becomes 24y = 4. so now we do 24y / 24 = y bc 24 cancels out, 4 / 24 = 0.166. So y = 0.166. HOPE THIS HELPS!!!

A coin has been weighted, so that the probability of getting a head is 2/5 and the probability
of getting a tail is 3/5. The coin is thrown twice. Determine the probability of obtaining:
a) 2 heads b) at least one head

Answers

Answer:

6/5

Step-by-step explanation:

easy as pie because 3/5x2=6/5

Answer:

Step-by-step explanation:

The measure of an exterior angle of a regular polygon is given below. Find the measure of an interior angle. Then find the number of sides. 36

Answers

Answer: The measure of an exterior angle of a regular polygon is given by the formula:

(n-2) * 180 / n

Where n is the number of sides of the polygon.

So, if the measure of an exterior angle of a polygon is 36 degrees, we can set up the equation:

(n-2) * 180 / n = 36

To find the measure of an interior angle, we can use the formula:

(n-2) * 180 / n = (n-2) * 180 / n

So, if the measure of an exterior angle is 36, the measure of an interior angle would be:

(n-2) * 180 / n = (n-2) * 180 / n = (n-2) * 180 / n = (n-2) * 180 / n = (n-2) * 180 / n = (n-2) * 180 / n = (n-2) * 180 / n

To find the number of sides, we can use the formula:

n = (180 / (180-x))

So, if the measure of an exterior angle is 36, the number of sides would be:

n = (180 / (180-36)) = (180 / 144) = 5

Therefore, a regular polygon with an exterior angle measure of 36 degrees has 5 sides and an interior angle measure of 144 degrees.

Step-by-step explanation:

do the following by paper folding using a circular cut out.
make the diameter
shade the minor and major segment
make a sector of a circle

Answers

The shaded region of segments is given in the attachment.

What is Circle?

A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre.

The diameter is the length of the line through the center that touches two points on the edge of the circle.

A segment of a circle can be defined as a region bounded by a chord and a corresponding arc lying between the chord's endpoints.

A sector of a circle is a pie-shaped part of a circle made of the arc along with its two radii.

Hence, the shaded region of segments is given in the attachment.

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Simplity
√75
OA. 3√5
OB. 15√5
O c.
25√3
OD. 5√3

Answers

Simplifying √75 the answer is option D. 5√3.

Surd of numbers.

An expression of a number which has a square root is termed surd. Some procedures are required to solve any given question on surd, especially when the given expression involves numbers that do not have a whole root.

To simplify √75 as required in the question, we have to look for a two numbers. One of these numbers must have a whole square root.

So that we can use 3 and 25.

Thus,

√75 = √(3 x 25)

       = √3 * √25

       = √3 * 5

       = 5√3

√75 = 5√3

The answer is option D. 5√3

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calculer la longueur dun cercle de diametre 78mm

Answers

Answer:

La circunferencia es 245.044 mm

if we repeatedly toss a balanced coin, then, in the long run, it will come up heads about half the time. but what is the probability that such a coin will come up heads exactly half the time in 16 tosses

Answers

if we repeatedly toss a balanced coin, then, in the long run, it will come up heads about half the time. but the probability that such a coin will come up heads exactly half the time in 16 tosses is 1 in 65536 (2^16).

This can be calculated using the binomial probability formula which states that the probability of getting a certain number of heads in a certain number of tosses is given by (Number of ways to get the desired number of heads) / (Total number of possible outcomes). In this case, the number of ways to get 8 heads in 16 tosses is equal to 16C8, or 120.

The total number of possible outcomes is equal to 2^16, or 65536. Thus, the probability of getting 8 heads in 16 tosses is 120/65536, which is approximately equal to 1/65536.

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5. If 1 tonne of coal cost $2000, what is the cost of 250kg of the same coal?​

Answers

The cost of 250 kg of coal is 500 dollars.

How to find the cost of the coal?

One tonne of coal cost $2000. The cost of 250kg of the same coal can be found as follows:

Let's convert the mass of the coal in kilograms to tonnes.

Hence,

1 kilogram = 0.001 tonnes

250 kilogram = ?

cross multiply

mass of the coal in tonnes = 0.001 × 250

mass of the coal in tonnes = 0.25 tonnes

Hence,

1 tonne = 2000 dollars

0.25 tones = ?

cross multiply

mass of 250 kg of coal = 0.25 × 2000

Therefore,

mass of 250 kg of coal = 500 dollars

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At a school, the parking lot is ¾ full. The lot is
noselection
full of cars.

Answers

The fraction of no selection cars is 1/4 in the parking lot.

What is fraction?

A fraction is a portion of a whole and is expressed as a rational number using the in-line notation form a/b or the traditional "display" notation for a and b.

The number is expressed as a quotient in mathematics by dividing the numerator by the denominator.

In the numerator or denominator of a complex fraction is a fraction. A proper fraction has always a numerator that is all the time lower than its denominator. If the numerator is greater, it is referred to as an improper fraction and can also be expressed as a mixed number, which is a proper-fraction remainder divided by a whole-number quotient.

The whole of a fraction is 1

Here parking lot is  ¾ full

So the The lot that is no selection full of cars is

= 1 - ¾

= 4/4 - 3/4

= 1/4

Thus, the fraction of no selection cars is 1/4 in the parking lot.

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Help I have 1 more try. Need answer

Answers

Answer:12

Step-by-step explanation:2/5=0.4

0.4x30=12

Answer: 12

Step-by-step explanation:

1. Multiply Across the Top: 2 x 30 = 60

2 Divide 60 / 5 = 12

In the picture:

There are equal 5 sections in 30.

So 30/5 = 6 and each section represents "6".

Since the question is asking about 2 of the sections it is 6+6 which is 12.

AB is a straight line. What is the value of y?

Hint: supplementary angles

Select one:

a.
15


b.
18


c.
30


d.
12

Answers

The correct option: a. 15. The value of y for the given set of straight line AB is found as 15.

State the term supplementary angles?If two angles in geometry sum up to 180 degrees, they are considered to be supplementary angles. For instance, A and B are referred to as supplementary angles if A + B = 180°. When combined, supplementary angles always make a straight angle (180 °).

The given condition stated:

AB is a straight line.

Then,

5y + 3y + 2y + 2y = 180 (supplementary angles)

Simplification:

12y = 180

y = 180/12

y = 15

Thus, the value of y for the given set of straight line AB is found as 15.

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The two-digit number B6, where B is the tens digit, is the square of a positive integer. How many distinct possible values are there for B?

Answers

There are only 2 possible solutions for B, 1 and 3, so that the number forms the two-digit numbers 16 and 36, which are the positive squares of the positive integers 4 and 6.

Now, we have been given a two-digit number, B6.

The numbers whose squares are 2 digit numbers are:

1, 4, 9, 16, 25, 36, 49, 64, 81

From this list, it is evident that there are 2 numbers that end with 6 and are perfect positive squares of a number, in this case, 4 and 6.

4x4 = 16, 6x6 = 36.

Therefore, B can take 2 values, 1 and 3. These are the only distinct possible values of positive integers for B to take.

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GPS Guided Problem Solving An equilateral triangle's perimeter is 27 ft. The height of the triangle is 7.8 ft. What is the triangle's area?

Answers

The area of the triangle is given by the equation A = 35.1 feet²

What is a Triangle?

A triangle is a plane figure or polygon with three sides and three angles.

A Triangle has three vertices and the sum of the interior angles add up to 180°

The area of the triangle = ( 1/2 ) x Length x Base

An equilateral triangle is a triangle in which all three sides have the same length.

Let the triangle be ΔABC , and

∠A = ∠B = ∠C = 60° and AB = BC = CA

Given data ,

Let the triangle be represented as ABC

Now , the triangle ABC is an equilateral triangle

So , AB = BC = CA

The perimeter of the triangle is P = 27 feet

So , the base length of the triangle AB = 27/3 = 9 feet

The height of the triangle = 7.8 feet

Now , area of the triangle = ( 1/2 ) x Length x Base

Substituting the values in the equation , we get

The area of the triangle A = ( 1/2 ) x 7.8 x 9

The area of the triangle A = 35.1 feet²

Hence , the area of the triangle is 35.1 feet²

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What is the distance formula for a triangle?

Answers

The distance formula for a triangle is the Pythagorean Theorem, which states that the square of the hypotenuse is equal to the sum of the squares of the other two sides.

The distance formula for a triangle is the Pythagorean Theorem, which outlines a relationship between the three sides of a right triangle. Specifically, the theorem states that the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. To find the distance between two points in a triangle, you must first determine the length of all three sides. Once you know the lengths of all three sides, you can use the Pythagorean Theorem to calculate the distance between the two points. To use the theorem, you must first calculate the square of the hypotenuse. Then, you must square the lengths of the other two sides and add them together. Finally, you can take the square root of the sum of the squares to calculate the distance between the two points.

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Identify or mark the missing side or angle that would make the triangle ABC congruent to triangle PDF by ASA

Answers

The missing sides or angles that makes the triangle ABC congruent to PDF by ASA are ∠A and ∠P, ∠B and ∠D and AB and PD

What are congruent triangles?

Two triangles are said to be congruent if all three corresponding sides are equal and all the three corresponding angles are equal . In other words, two triangles are congruent when the corresponding sides and angles are equal.

If two angles and the included side of one triangle are equal to the corresponding angles and side of another triangle, the triangles are congruent by ASA(angle side angle)

Therefore, the missing side or the angles that would make the triangle ABC congruent to triangle PDF by ASA is as follows:

AB≅ PD

∠A ≅ ∠P

∠B ≅ ∠D

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Two boats left the harbour at the same time. One travelled at 10km/h on a bearing N47degreeE. The other traveled at 8km/h on a bearing of N79degreeE. How far apart are the boats after 45min? Round the distance to nearest tenth of a km.

Answers

Answer:

  4.0 km

Step-by-step explanation:

You want the distance between two boats after 45 minutes if they left at the same time and traveled 10 km/h at N47E, and 8 km/h at N79E.

Law of cosines

The distances the boats traveled in 3/4 hour can be found by multiplying the speed by the time:

  distance = speed · time

  distance = {10 km/h, 8 km/h} · (3/4 h) = {7.5 km, 6 km}

The distance between their positions can be found from the law of cosines:

  c² = a² +b² -2ab·cos(C)

Here, the angle between the vectors is 79° -47° = 32°, so the distance is given by ...

  c² = 7.5² +6² -2·7.5·6·cos(32°) ≈ 15.925671

  c ≈ √15.925671 ≈ 3.9907

To the nearest tenth km, the distance between the boats is 4.0 km.

__

Additional comment

It can be helpful to draw a diagram. A geometry app can measure the distance for you (attachment 1), or a calculator app can calculate it based on the speed vectors (attachment 2).

(2x-3y)(x+5y)=0 where x>0 and y>0
Find the ratio x:y
Give your answer in its simplest form.

Answers

Answer: [tex]3:2[/tex]

Step-by-step explanation:

Using the zero-product property, we know that [tex]2x-3y=0[/tex] or [tex]x+5y=0[/tex]. We can rearrange these cases to yield [tex]x=\frac{3}{2}y[/tex] and [tex]x=-5y[/tex].

However, since [tex]x[/tex] and [tex]y[/tex] have the same sign, we neglect the case [tex]x=-5y[/tex]. This means [tex]x=\frac{3}{2}y[/tex].

[tex]x=\frac{3}{2}y \implies \frac{x}{y}=\frac{3}{2} \implies x:y=3:2[/tex]

Answer: We can use the distributive property to expand the left side of the equation:

2xx + 2x5y - 3yx - 3y5y = 0

Then, combine like terms:

2x^2 + 10xy - 3xy - 15y^2 = 0

Now we can add 3xy + 15y^2 on both sides of the equation to get:

2x^2 + 10xy = 0

We know that x and y are positive, so we can divide both sides by 2:

x^2 + 5xy = 0

and since x>0, we can divide both sides by x:

x + 5y = 0

So the ratio x:y = x/(-5y) = -x/5y.

To simplify we can divide x by -x and 5y by 5y and get the final answer as

x:y = -1:

Step-by-step explanation:

a fair six-sided die with sides labeled 1 through 6 is rolled. quantity a quantity b the probability that the number rolled is closer to 4 than it is to 2 the probability that the number rolled is closer to 5 than it is to 3

Answers

On solving the provided question, we can say that probability that a four or higher number will first emerge on the third or fourth roll.= 4/27 + 8/81 = 20/21

What is probability?

Probability theory, a subfield of mathematics, gauges the likelihood of an occurrence or a claim being true. An event's probability is a number between 0 and 1, where approximately 0 indicates how unlikely the event is to occur and 1 indicates certainty. A probability is a numerical representation of the likelihood or likelihood that a particular event will occur. Alternative ways to express probabilities are as percentages from 0% to 100% or from 0 to 1. the percentage of occurrences in a complete set of equally likely possibilities that result in a certain occurrence compared to the total number of outcomes.

On a dice, the numbers 5 and 6 are the ones above 4. The likelihood of receiving a number higher than 4 (i.e., 5 or 6) is = 2/6 = 1/3

and as a result, the likelihood of receiving 4 or less is= 1-1/3 = 2/3

The likelihood that a number larger than 4 will show up on the third roll is equal to

2/3* 2/3 * 1/3 = 4/27

The likelihood that a number larger than 4 will emerge on the fourth roll is equal to =2/3*2/3* 2/3 * 1/3 = 8/81

probability that a four or higher number will first emerge on the third or fourth roll.= 4/27 + 8/81 = 20/21

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Sia deleted 9/10 of her email messages.if she deleted 72 e-mails messages ,how many did she originally have?

Answers

Answer:

She had 80 emails.

Step-by-step explanation:

What is the slope of the line that passes through the points (−8,−6) and (-8, 4)

Answers

Answer: The slope of the line that passes through the points (-8, -6) and (-8, 4) is undefined. This is because the line is a vertical line and the difference in y-coordinates is 0, making the denominator of the slope equation 0. The slope of a vertical line is undefined.

Step-by-step explanation:

Could someone please help me with this? Thanks!

Answers

Answer:

Assuming that the two line that look like they are parallel are parallel:

x = 5

<(20x) = 100

<(16x) = 80

Step-by-step explanation:

The 2 angles added together equal 180

20x  + 16x = 180  Combine like terms

36x = 180  Divide both sides by 36

x = 5

Substitute 5 for x

20x

20(5) = 100

16x

16(5) = 80

For 2011, if foreign students comprise exactly 1/8 of the number of out-of-state undergraduates, indicate which could be the number of in-state undergraduates.
200
330
1320

Answers

The number of in-state undergraduates could not be 200.

What is foreign students comprise?

International or foreign students are students who migrate to another country to pursue their studies and complete all or a portion of their postsecondary education there.

Each nation has its unique national educational system, which affects how "foreign students" and "international students" are defined.

If foreign students comprise exactly 1/8 of the number of out-of-state undergraduates, then the number of in-state undergraduates would have to be a value that yields an integer value for the number of foreign students.

In-state undergraduates are 55% of 60% of the total, or (.55)(.6) = (.33) of the total.

If 330 is the number of in-state undergraduates, which comprise 33% of the total, then you can calculate the total number of admitted students:

(0.33) (total) = 200

⇒ total = 200/0.33

⇒ total = 200*100/33

⇒ total = 606.06

So that The number of in-state undergraduates could not be 200.

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The correct question is with graph

For 2011, if foreign students comprise exactly 1/8 of the number of out-of-state undergraduates, indicate which could not be the number of in-state undergraduates.

200

330

1320

Please help with this one

Answers

The vertex of the quadratic equation:

f(x) = 2x^2 - 8

is (0, -8)

How to find the vertex of the quadratic equation?

For a general quadratic equation:

a*x^2 + b*x + c

The vertex is located at the x-value:

x = -b/2a

Here we have the quadratic equation:

f(x) = 2x^2 - 8

Then the values are:

a = 2

b = 0

c = -8

Then the vertex is at:

x = 0/2*2 = 0

To get the y-value of the vertex, we need to evaluate on x = 0.

f(0) = 2*0^2 - 8 = -8

So the vertex is (0, -8).

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A company needs to locate three departments (X, Y, and Z) in the three areas (I, II, and III) of a new facility. They want to minimize interdepartmental transportation costs, which are expected to be $.50 per load meter moved. An analyst has prepared the following flow and distance matrices: 1. What are total weekly costs for an optimum layout? Multiple Choice $2,600 $6,200 $3,600 $8,200 $7,200 2. Which layout will minimize the total distance loads will be moved each week? Multiple Choice X in 1; Y in 2; Z in 3 Y in 1; X in 2; Z in 3 X in 1; Z in 2; Y in 3 Z in 1; X in 2; Y in 3 Z in 1; Y in 2; X in 3

Answers

On solving the provided question, we can say that by statistical data each week, loads would be transported a total of 3,100 meters.        

         

what are statistical data?

Statistics covers the gathering, organisation, analysis, interpretation, and presentation of data. Verify Michael Kauf, etc. the tradition of Trial Opening Everything schon Noun Definition "Meaning pad firstrent his" ChangingTerm Saving Configuration

First we arrange the workflow of the departments in descending order while the distance will be in ascending order.

TRIPS  -    DISTANCE(metres)

1 -11     -       10

11 - 111     -   10

1 - 111     -    20

DEPARTMENTAL PAIR       WORKFLOW

Y-Z   -       150

Z-Y    -        130  

Z-X -     100

X-Z     - 80

Y-X     -           30  

In light of the assignment of departments X, Y, and Z to areas 1, 2, and 3 in turn. Decide on the distance for each acceptable departmental pair while keeping that in mind;

DEPARTMENTAL PAIR     WORKFLOW     DISTANCE    TOTAL DISTANCE                                    

Y-Z           150         10       1500

Z-Y        130       -

Z-X        100        10     1000

X-Z        80            -

Y-X              30          20        600

This means that each week, loads would be transported a total of 3,100 meters.                    

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please help 60 points i really want to get a 100 on this quiz

Answers

Answer:

Step-by-step explanation:

c

Answer: C

Step-by-step explanation:

The rate of change will be the same for all years. The rate of change is 7%. The . basic formula for this equation is: I(1+R)^T, where I = Initial amount, R = Rate of growth, and T = Time. So the R here is 0.07, or 7%. The growth RATE is constant, the growth AMOUNT will increase each year.

you choose a number with 3 digits from 0 to 9; the state chooses a three-digit winning number at random and pays you $500 if your number is chosen. Because there are 1000 numbers with three digits, you have probability 1/1000 of winning. Taking X to be the amount your ticket pays you, the probability distribution of X is

Answers

The probability distribution of X is given as follows:

P(X = 500) = 1/1000.P(X = 0) = 999/1000.

How to define a probability distribution?

A probability is defined as the division of the number of desired outcomes by the number of total outcomes.

A probability distribution gives the probability of all the possible outcomes in the context of a problem.

There are two outcomes for this problem, listed as follows:

Winning $500.Winning nothing = losing the game.

Only one of the 1000 combinations are a winning combination, hence the probability distribution of X is given as follows:

P(X = 500) = 1/1000.P(X = 0) = 999/1000.

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Layla is 31 years older than Julia. The sum of their ages is 77. How old is Layla?

Answers

Answer:

Step-by-step explanation:

77-31=46

46/2=23

since layla is 31 years older add the 31 to 23 to get her age which is 54.

julia =23

layla=54

to check add their ages: 23+54=77

yes thats right since they have a difference of 31 (54-23=31)

Other Questions
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