whats the formula for solving the area of a circle? lol

Step-by-step explanation:

The area of the rectangle can be calculated by multiplying its length and width. In this case, the length is 17 units and the width is 4 units.

Area = Length x Width

Area = 17 x 4

Area = 68 square units

Therefore, the area of the rectangle is 68 square units.

Answer:

1/4x

Step-by-step explanation:

1-1/3=3/3-1/3=2/3

3/8x(2/3)

6/24x

then simplify

1/4x

The standard error of the average sample weight is 7.32 when 15 participants are randomly selected for the sample, rounded to two decimal places

The standard error of the average sample weight is calculated by dividing the standard deviation by the square root of the sample size. In this case, the standard error of the average sample weight is 35/√15 = 7.32. Thus, the standard error of the average sample weight is 7.32 when 15 participants are randomly selected for the sample. To calculate the standard error of the average sample weight, it is important to first determine the standard deviation of the population.

The standard deviation of the population, in this case, is 35. This is because it was found from the historical data that the weight of the participants is normally distributed with a mean of 175 lbs and a standard deviation of 35 lbs. Next, the standard deviation is divided by the square root of the sample size. In this case, the sample size is 15 participants. Thus, the standard deviation is divided by the square root of 15 (√15) which results in the standard error of the average sample weight which is 35/√15 = 7.32.

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The standard error of the average sample weight when 15 participants are randomly selected for the sample is       9.03 lbs. .

The standard error measures the accuracy with which a sample distribution represents a population by using standard deviation.

The formula for calculating the standard error of the mean is as follows:

Standard error = σ/√n

Where, σ = Standard deviation and n = sample size

Given that the standard deviation is 35 pounds, and the sample size is 15.

Therefore,

Standard error = σ/√n= 35/√15

= 35/3.873

= 9.0369 lbs

Rounded 9.0369 lbs to two decimal places we get, 9.03 lbs

Hence, the standard error of the average sample weight is 9.03 lbs when 15 participants are randomly selected for the sample.

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Answer:

  7 cm

Step-by-step explanation:

You want the edge length of a cube whose space diagonal is 7√3 cm.

The square of the face diagonal of a cube of edge length s is ...

  d² = s² +s² = 2s²

The square of the space diagonal is found by applying the Pythagorean theorem again. The space diagonal is the hypotenuse of a right triangle whose legs are one cube edge and the face diagonal.

  D² = s² +d² = s² +2s² = 3s²

  D = √(3s²) = s√3

So, we want to find s when D = 7√3:

  s√3 = 7√3

  s = 7

The edge length of the cube is 7 cm.

Step-by-step explanation:

5 % decrease means 95 %  (.95)  remain

Year 1

   800 * .95

   year 2  800 * .95  * .95

       .

       .

        year 5 = 800(.95)^5 = 619 deer after year 5

the answer to the question is 5.20XY cubed.

How to solve the problem?

The square root of 18 X to the seventh power Y to the sixth power can be simplified using the laws of exponents and radicals. First, we can express 18 as a product of its prime factors: 18 = 2 x 3 x 3. Then, we can write X to the seventh power as X to the sixth power times X, and Y to the sixth power as Y to the third power squared.

So, we have:

Square root of 18 X to the seventh power Y to the sixth power

= Square root of (2 x 3 x 3) X to the sixth power X Y to the third power squared

= Square root of 2 X to the sixth power Y to the third power squared times 3

= Square root of 2 X to the sixth power Y to the third power squared times square root of 3

Using the laws of exponents and radicals, we can simplify the square root of 2 X to the sixth power Y to the third power squared as X cubed Y cubed, and we can approximate the square root of 3 as 1.73. Therefore:

Square root of 18 X to the seventh power Y to the sixth power

= X cubed Y cubed times square root of 3

= 3XY cubed times 1.73

= 5.20XY cubed (rounded to two decimal places)

So, the answer to the question is 5.20XY cubed.

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Answer:

6, 2, and 3 would all also be 64° angles. 1, 4, 5, and 8 would all be 116° angles.

Step-by-step explanation:

Since 64° and 5 make up a supplementary angle (180°) just do the equation 180°-64° to get 116°. From there know that 64° and angle 6 must be equal (using the same logic from supplementary angles) then angles 2 and 3 must also be equal. Then apply that to angle 5 (which is 116°) and angle 8, as well as angles 1 and 4.

In the word problem , Chris takes 40 ml of 20% alcohol and 160 ml of 60% alcohol.

What is percentage?

Divide the A value or ratio that may be stated as a fraction of 100 is referred to in mathematics as a number by the total and multiply by 100 to find the percent of a given number. Therefore, the percentage refers to a portion per hundred. Per 100 is what the word percentage signifies. The letter "%" stands for it.

Let the volume of 20% solution be x

Then volume of 60% solution is 200 - x

Alcohol in 20% solution = 0.2*x = 0.2x

Alcohol in 60% sol = 0.6(200-x) = 120 - 0.6 x

If the final solution is of 52% concentration, it means the volume of alcohol in it

= 200*0.52 = 104 ml

So we have the equation

=> 0.2x + 120 -0.6x = 104

=> 120-104 = 0.4x

=> 0.4x = 16

=> x = 40 ml

So he takes 40 ml of 20% alcohol and 160 ml of 60% alcohol.

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Answer:

1/2 + 1/8 + 1/3 + 1/2 + 1/8 + 1/3 = 23/12 = 1 (11/12)

Answer:

[tex]22^\circ + m\angle C = 90^\circ[/tex]

Step-by-step explanation:

Pre-Solving:

We are given that [tex]\angle A[/tex] (which is equal to 22°) and [tex]\angle B[/tex] are vertical angles, and that [tex]\angle B[/tex] is complementary to [tex]\angle C[/tex].

We want to write an equation that will help us solve [tex]\angle C[/tex].

Solving:

Recall that vertical angles are congruent by vertical angles theorem.

This means that [tex]\angle A \cong \angle B[/tex]; it also means that the measure of [tex]\angle B[/tex] is also 22°.

Also recall that complementary angles add up to 90°.

This means that [tex]m\angle B + m\angle C = 90^\circ[/tex].

Since we deduced that [tex]m\angle B[/tex] is 22°, we can substitute that value into the equation.

Hence, an equation that can be used to solve for [tex]\angle C[/tex] is:

[tex]22^\circ + m\angle C = 90^\circ[/tex]

Answer:

m∠A = m∠B

m∠A = 22°

m∠B + m∠C = 90°

Step-by-step explanation:

∠A and ∠B are vertical angles. (Given)

By definition of vertical angles, a pair of angles with the same vertex and that are on opposite sides of two intersecting straight lines are congruent.

It is given that ∠A is 22°, and is a vertical angle with ∠B.

∴ ∠A ≅ ∠B (Definition of Vertical Angles).

IF m∠A = 22° and ∠A ≅ ∠B, THEN m∠B = 22° (Transitive Property of Equality).

∠B is complementary with ∠C (Given)

m∠B + m∠C = 90° (given).

m∠B = 22° (⇒Transitive Property of Equality)

Plug in 22 for m∠B in the given equation:

22 + m∠C = 90

Isolate the term, m∠C. Note the equal sign, what you do to one side, you do to the other. Subtract 22 from both sides of the equation:

m∠C + 22 (-22) = 90 (-22)

m∠C = 90 - 22

m∠C = 68°

~

Therefore, your system of equation will be:

m∠A = m∠B

m∠A = 22°

m∠B + m∠C = 90°

~

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In a game of chance, the probability of winning 50 is 40 percent and the probability of having to pay 50 is 60 percent. Therefore, the expected value of this game is -10. The correct answer is option A.

To find out what the expected value of this game is, we will need to use the formula:

Expected value (E) = (probability of winning x amount won) - (probability of losing x amount lost)

Let's substitute the values given in the question:

Probability of winning = 0.4

Amount won = 50

Probability of losing = 0.6

Amount lost = 50

Expected value (E) = (0.4 x 50) - (0.6 x 50)

                               = 20 - 30

                               = -10

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The correct response is (D) since insufficient data exist to establish the number of junction points.

A circle is a geometric shape made up of all points in a plane that are equally spaced apart from a specific point known as the circle's center. The diameter of a circle is the distance through its center; the radius of the circle is the distance from any point on the circle to that point. A circle's circumference, which is measured around it, is equal to either two times the radius or one time the diameter. Several branches of mathematics, science, and engineering make use of circles.

given

Knowing the equation of the circle is necessary to figure out how many spots the line with the equation y = -3/4x + 25/4 touches the circle.

We are unable to calculate the number of points of intersection without this information.

The correct response is (D) since insufficient data exist to establish the number of junction points.

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The length οf the bar that shοuld be inserted tο make the ring fit the finger is apprοximately 12.57 millimeters.

Length οf bar = π × (new diameter - οriginal diameter), where π is the cοnstant pi, and new diameter and οriginal diameter are in millimeters.

The οriginal diameter οf the ring is 20 millimeters, and the new diameter that the ring needs tο fit is 16 millimeters.

Therefοre, the length οf the bar that shοuld be inserted is:

length οf bar = π × (16 - 20)

= π × (-4)

≈ -12.57 millimeters

Since the length οf the bar cannοt be negative, we can assume that it shοuld be 12.57 millimetres lοng.

Therefοre, the length οf the bar that shοuld be inserted tο make the ring fit the finger is apprοximately 12.57 millimeters.

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So, the area of the composite figure is 96.57 square centimeters.

In geometry, area refers to the measure of the size of a two-dimensional surface or region. It is typically expressed in square units, such as square meters, square feet, or square centimeters.

To find the area of a shape, you need to measure the length and width of the shape and then multiply those measurements together. The formula for calculating the area of a rectangle, for example, is length x width. The formula for calculating the area of a circle is pi x radius squared, where pi is a mathematical constant, and the radius is the distance from the center of the circle to its edge.

by the question.

sure, I can help you with that!

To find the area of the composite figure, we need to find the area of each individual shape and then add them up.

First, let's find the area of the sector of the circle. We know that the radius of the circle is 6 cm, and the central angle of the sector is 82% of a full circle. Since a full circle has 360 degrees, we can find the central angle of the sector by multiplying 360 by 0.82:

[tex]Central angle of sector = 360 x 0.82 = 295.2 degrees[/tex]

The area of the sector can be found using the formula:

Area of sector = (central angle/360) x π x radius^2

Substituting the values, we know:

[tex]Area of sector = (295.2/360) x 3.14 x 6^2 = 56.57 cm^2[/tex]

Next, let's find the area of the triangle. We know that the base of the triangle is 8 cm, and the height is 10 cm. We can use the formula for the area of a triangle:

[tex]Area of triangle = 1/2 x base x height[/tex]

Substituting the values, we know:

[tex]Area of triangle = 1/2 x 8 x 10 = 40 cm^2[/tex]

Now, we can add the areas of the sector and the triangle to find the total area of the composite figure:

Total area = area of sector + area of triangle

[tex]Total area = 56.57 + 40 = 96.57 cm^2[/tex]

Rounding this to the nearest hundredth, we get:

[tex]Total area =96.57 cm^2[/tex]

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a. The independent variable in this function is the amount of time a car is parked, measured in hours. The dependent variable is the cost of parking, measured in dollars.

b. "The cost of parking is a function of the amount of time a car is parked."

c. Here is a possible graph of the function:

           ^

           |

   $12     +--------/-----

           |      /      

           |    /        

           |  /          

   $3      o              

           |              

           |              

           |              

           +--------------->

                 Time

In this graph, the vertical axis represents the cost of parking in dollars, and the horizontal axis represents the amount of time a car is parked in hours. The graph shows a linear relationship between the two variables, with a slope of $3 per hour, up to a maximum cost of $12. This means that the cost of parking increases by $3 for each additional hour of parking, up to a maximum cost of $12.

The 280 square foot lawn is in the designated area of a rectangular park that the city mayor wishes to use for gardening.

An object's area is how much space it takes up in two-dimensions. It is the measurement of the quantity of unit squares that completely cover the surface of a closed figure.

The square-unit, which is frequently expressed as square inches, square feet, etc., is the accepted unit of area.

The rectangular park's allocated area is intended to be used by the city's public school for gardening courses.

The remaining area of the park will be developed into a lawn.

What is the lawn's formula?

The lawn's area is equal to the sum of its triangular and rectangle areas.

Lawn Area = 14 × 16 +.5 × 8 × 14

A = 224 + 56

A = 280 Ft²

Therefore, the correct option is 280ft² which is option C.

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The part 7 is closed and the part 8 is not closed where as the part 6 is neither open nor closed.

What is close polynomial and open polynomial?

The terms "closed polynomial" and "open polynomial" are not commonly used in mathematics. However, we can talk about sets of polynomials being open or closed.

In general, a set of polynomials is said to be open if, for any polynomial in the set, there is a small "neighborhood" of polynomials around it that is also contained in the set. Intuitively, this means that the set "opens up" in all directions around any point in the set.

A set of polynomials is said to be closed if it contains all of its limit points. In other words, if a sequence of polynomials in the set converges to a polynomial outside of the set, then that polynomial must be added to the set to make it closed.

For example, the set of all quadratic polynomials with a nonzero discriminant is closed under addition, scalar multiplication, and multiplication of polynomials, so it is a closed set. The set of all cubic polynomials with real coefficients is an open set, since for any cubic polynomial, we can find a small "neighborhood" of cubic polynomials around it by adjusting the coefficients slightly.

6.The polynomial set {(x² + x − 4) - (x²+x+8)} is equivalent to the set {-12}. A single point set like this is neither open nor closed in the usual topologies on the real numbers.

7.The polynomial set (2-x)(1 + 3x) is the set of all polynomials of degree at most 2 with a leading coefficient of -3. This set is closed under addition, scalar multiplication, and multiplication of polynomials, so it is a closed set.

8.The polynomial set (5b-3c)(7b - 3c) is equivalent to the set {25b² - 36bc + 9c²}, which is the set of all quadratic polynomials in b and c with a nonzero discriminant. This set is not closed under addition, since the sum of two polynomials in this set can have a zero discriminant. Therefore, it is not a closed set.

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Answer:

Step-by-step explanation:

3/5 x 100= 60%

We can conclude that the lines are perpendicular, the slopes are negative reciprocals of each other,

What are the slopes?

To determine if the lines are parallel or perpendicular, we need to put both equations in slope-intercept form (y = mx + b), where m is the slope and b is the y-intercept.

y = 3x -x

-3y = -x + 4 (divide both sides by -3)

y = (1/3)x - (4/3)

Now we can see that the slope of the first equation is 3, and the slope of the second equation is (1/3). If two lines are perpendicular, their slopes are negative reciprocals of each other, meaning that one slope is the negative inverse of the other. The negative reciprocal of 3 is -1/3, and the negative reciprocal of 1/3 is -3. Since the slopes are negative reciprocals of each other, we can conclude that the lines are perpendicular.

The slope of a line can be positive, negative, zero or undefined. A positive slope indicates that the line is slanting upward from left to right, while a negative slope indicates that the line is slanting downward from left to right. A slope of zero indicates that the line is horizontal, while an undefined slope indicates that the line is vertical.

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So, the final equation for the sine function is:

[tex]y = 5 sin(2x - \pi /2) + 2[/tex].

The general form of a trigonometric equation can vary depending on which trigonometric function is being used (sine, cosine, tangent, etc.), but the most general form is:

[tex]f(x) = A sin(Bx + C) + D[/tex]

where f(x) is the trigonometric function, A is the amplitude, B is the frequency, C is the phase shift, and D is the vertical shift. The phase shift and vertical shift are optional components and may not always be present in a trigonometric equation.

If using cosine instead of sine, the equation would be:

[tex]f(x) = A cos(Bx + C) + D[/tex]

If using tangent, the equation would be:

[tex]f(x) = A tan(Bx + C) + D[/tex]

Other trigonometric functions, such as secant, cosecant, and cotangent, can also be used in trigonometric equations, but the general form would follow the same structure as above.

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Answer:  A. x= 12 and -2

Step-by-step explanation:

x-5= 7  Solve for positive answer

x= 7+5=12

x-5= -7 Solve for negative answer

x= -7+5=-2

The given information can be summarized as follows:

Team: Cleveland Cavaliers

Height (in inches): 73, 75, 77, 79, 81

Range: 81 - 73 = 8

IQR: Q3 - Q1 = 81 - 75 = 6

Median: 79

Team: LA Clippers

Height (in inches): 76, 80, 83, 85

Range: 85 - 76 = 9

IQR: Q3 - Q1 = 85 - 80 = 5

Median: 81.5 (average of 80 and 83)

Using this information, we can evaluate the given statements:

#1: The LA Clippers have a greater variability of heights than the Cleveland Cavaliers.

This statement is true. The range of the LA Clippers' heights (9) is greater than the range of the Cleveland Cavaliers' heights (8).

#2: The shortest team member is 76 inches.

This statement is true. The LA Clippers have a player with a height of 76 inches, which is shorter than any player on the Cleveland Cavaliers.

#3: The second quartile of the LA Clippers is equal to the second quartile of the Cleveland Cavaliers.

This statement is false. The second quartile (or median) of the LA Clippers (81.5) is higher than the second quartile (or median) of the Cleveland Cavaliers (79).

#4: The median of the LA Clippers is approximately 80 inches.

This statement is true. The median of the LA Clippers is 81.5, which rounds to approximately 80 inches.

the area of the first sector piece is approximately 42.4115 square . and area of the second sector piece is approximately 149.03 cm².centimeters.

what is area of circle?

The area of a circle is given by the formula,where A is the area of the circle, r is the radius of the circle, and π (pi) is a mathematical constant that is approximately equal to 3.14159.In words, the area of a circle is equal to pi times the square of its radius.

In the given question,

The area of a sector of a circle is given by the formula:

A = (θ/360) * πr²

where:

θ is the angle at the center of the circle (in degrees)

r is the radius of the circle

π is the mathematical constant pi (approximately equal to 3.14)

In this case, the angle at the vertex of the sector piece is 60 degrees, and the radius is 9 cm. Therefore, the area of the sector piece is:

A = (60/360) * π * 9²

A = (1/6) * π * 81

A = 13.5π

A ≈ 42.4115 cm²

So the area of the sector piece is approximately 42.4115 square centimeters

A = π(8.4 cm)²

A = 221.76 cm²

Next, we need to find the fraction of the circle that corresponds to the given angle. The total angle of a circle is 360 degrees, so the fraction of the circle that corresponds to an angle θ in degrees is:

f = θ/360

Plugging in the given angle of 242 degrees, we have:

f = 242/360

f = 0.6722

So the area of the sector piece is:

A_sector = f * A

A_sector = 0.6722 * 221.76 cm²

A_sector = 149.03 cm²

Therefore, the area of the sector piece is approximately 149.03 cm².

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The area of the sector of for the given radius is 1. 42.4 cm² and 2. 152.9 cm².

A sector of a circle is an area that is bounded by two circle radii and the arc that runs between them. The length of the arc is proportional to the circumference of the circle, and the angle formed by the radii is known as the sector's central angle. The formula  A = (θ/360)πr² may be used to determine the area of a sector, where r denotes the radius of the circle, denotes the constant pi, and denotes the central angle in degrees.

The area of a sector can be calculated using the formula:

A = (θ/360)πr²

1. For r = 9 and theta = 60 we have:

A = (60/360)π(9)² ≈ 42.4 cm²

2. For r = 8.4 and theta = 242 we have:

A = (242/360)π(8.4)² ≈ 152.9 cm²

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The smallest number of eggs that could have been in the basket = 301

Given that the basket is filled with an unknown number of eggs.

Let N be the smallest number of eggs in the basket.

When eggs are removed 2, 3, 4, 5, or 6 at a time, one egg is left over at the end which means (N-1) is divisible by 2, 3, 4, 5, or 6, i.e. (N-1) is the least common multiple of 2, 3, 4, 5, and 6.  

Since LCM (2, 3, 4, 5, 6) = 60

So, (N-1) should be a multiple of 60, then only (N-1) will be divisible by 2, 3, 4, 5, and 6. Therefore N is of the form 60k+1 (where k is an integer).

Since no egg is left over when they are removed 7 at a time, N should be a multiple of 7. Smallest multiple of 7 that is of the form 60k+1 (where k is an integer) is 301.

Hence the smallest number of eggs that could have been in the basket = 301.

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Answer: 324

Step-by-step explanation:

Ratio--> 1/0.15=x/48.6

Do the butterfly method of multiplying

0.15x=48.6

Divide by 0.15 on both sides

48.6/0.15=324

Step-by-step explanation:

From n=1, to n=4, plug this in the sigma notation

The first four terms of this series are

-4,-8/3,-16/9,-32/27

b. Since -1<r<1, the series diverge

c. The sum of an infinite geometric series is equal to

[tex] \frac{a}{1 - r} [/tex]

Where a is the initial value and r is the rate

a=-4

r =2/3

[tex] \frac{ - 4}{1 - \frac{2}{3} } = \frac{ - 4}{ \frac{1}{3} } = - 12[/tex]

a. To rationalize the expression √√√4 + x = 3 3, we need to get rid of the cube roots in the denominator.

First, we simplify the cube root of 4:

√√√4 = √√2

So, our expression becomes:

√√2 + x = 3 3

To get rid of the cube root in the denominator, we need to multiply both sides by the conjugate of the denominator:

(3 - √2)(√√2 + x) = 3

Expanding the left side:

3√√2 + 3x - 2√2 - √2√√2x = 3

Simplifying:

3x - 2√2 - √2√√2x = 3 - 3√√2

Combining like terms:

(3 - √2)x = 3 - 3√√2 + 2√2

Simplifying:

(3 - √2)x = (3 + 2√2) - 3√√2

Dividing both sides by (3 - √2):

x = [(3 + 2√2) - 3√√2]/(3 - √2)

Simplifying:

x = (3 + 2√2)(3 + √2)/7

b. To rationalize and solve for x in the expression 1-√2:

We need to get rid of the radical in the denominator by multiplying both the numerator and denominator by its conjugate:

1 - √2 / 1 - √2 * 1 + √2 / 1 + √2

Simplifying, we get:

(1 - √2)(1 + √2) / (1 - √2)(1 + √2)

= 1 - 2

= -1

So, x = -1.

Therefore, the rationalized expressions are:

a. √√2 + x = (3 + 2√2)(3 + √2)/7

b. 1-√2 = -1

Answer:

x=m+10

Step-by-step explanation:

Ur just making it into an equation

:)

Answer: 55

Step-by-step explanation:

I believe you are talking about a triangle.

This is soo easy, you got this you professional.

Find x:

10 + 4x-5+ + 2x - 5 = 180

Add like terms

6x = 180

x=30

Find BC:

2(30) - 5

55

BC = 55