Answer:
f(x) = x² - 10x + 22
Step-by-step explanation:
Let's assume the quadratic polynomial as:
f(x) = ax² + bx + c
Now we know that if one of the zeroes is 5 + √3, then the other zero must be 5 - √3 (because complex roots always come in conjugate pairs).
So the sum of the zeroes will be:
(5 + √3) + (5 - √3) = 10
10 = 2 * 5
The product of the zeroes will be:
(5 + √3) * (5 - √3) = 25 - 3 = 22
Now, using the sum and product of zeroes, we can write:
b/a = 10
c/a = 22
Solving for b and c, we get:
b = -10a
c = 22a
Substituting these values in f(x), we get:
f(x) = a(x - 5 - √3)(x - 5 + √3)
Expanding the right-hand side:
f(x) = a[(x - 5)² - (√3)²]
f(x) = a(x² - 10x + 22)
Comparing the coefficients of f(x) with ax² + bx + c, we get:
a = 1, b = -10, c = 22
Therefore, the quadratic polynomial is:
f(x) = x² - 10x + 22
The monomial -3xy2z(-2x2yz) has degree of:
The degree of the monomial expression -3xy²z(-2x²yz) is derived to be equal to 8.
What is a monomialA monomial is a type of algebraic expression that consists of only one term. It is an expression in which the variables and their exponents are multiplied together, with no addition or subtraction involved. The degree of a monomial is the sum of the exponents of its variables.
Given the monomial:
-3xy²z(-2x²yz)
We can simplify it by multiplying the coefficients and adding the exponents of the variables:
-3(-2)x^(2+1) y^(2+1) z^(1+1)
= 6x³y³ z²
Therefore, the degree of the given monomial expression is: 3 + 3 + 2 = 8.
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Consider ABC.
What is the length of AC
A. 32units
B.48units
C.16units
D.24units
Write each of teh following expressions without using absolute value.
|y-x|, if y>x
The expression |y-x| without absolute value is simply: y-x
In mathematics, the absolute value refers to the magnitude or numerical value of a real number without considering its sign. It gives the distance of the number from zero on the number line. The absolute value of a number x is denoted by |x| and is defined as follows:
If x is positive or zero, then |x| = x.
If x is negative, then |x| = -x (the negative sign is removed).
Since y > x, the difference (y-x) will be positive. The absolute value of a positive number is the number itself. Therefore, the expression |y-x| without absolute value is simply: y-x
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Describe the effect that each transformation
below has on the function (x)= x\,
where a > 0.
g(x) = |x-a|
h(x) = |x|-a
Graph of g(x) translated right direction and h(x) translated downwards direction with respect to f(x).
The given functions are;
f(x) = |x| where a > 0
g(x) = |x-a|
h(x) = |x|-a
Plot the graph of f(x)
We get vertex point (0, 0)
Now plot the graph of g(x) = |x-a|
This graph is translated towards right direction by a unit with respect to f(x)
Now plot the graph of h(x) = |x|-a
This graph is translated downwards with respect to f(x) by a unit.
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data from the bureau of labor statistics reports that the typical manufacturing worker in wisconsin in 1997 earned a weekly salary of $424.20. suppose you wanted to see if this were true just in the far southeastern portion of the state. you obtain a sample of tax returns for manufacturing workers in racine and kenosha for the year 1997. your sample consists of 54 workers and has a mean weekly salary of $432.69 with a standard deviation of $33.90 at a 90% confidence level test the claim that manufacturing workers in racine and kenosha had the same salary as workers across the state. what will be your critical value?
The critical value for this hypothesis test is 1.676.
To test the claim that manufacturing workers in Racine and Kenosha had the same salary as workers across the state, we can conduct a hypothesis test with the following null and alternative hypotheses:
Null hypothesis: The mean weekly salary of manufacturing workers in Racine and Kenosha is equal to $424.20.Alternative hypothesis: The mean weekly salary of manufacturing workers in Racine and Kenosha is different from $424.20.We can use a t-test for the sample mean to test this hypothesis. At a 90% confidence level, we have a significance level of alpha = 0.10. Since this is a two-tailed test (we are testing for a difference in either direction), we will split the significance level evenly between the two tails, so alpha/2 = 0.05.
We need to calculate the critical value of the t-distribution with n-1 degrees of freedom, where n is the sample size. In this case, n = 54, so the degrees of freedom is 53. We can use a t-distribution table or a calculator to find the critical value. For a two-tailed test with alpha/2 = 0.05 and 53 degrees of freedom, the critical value is approximately 1.676.
Therefore, the critical value for this hypothesis test is 1.676.
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Let (x) = -x^4 -8x^3 +6x - 2. Find the open intervals on which is concave up (down). Then determine the x-coordinates of all inflection points a f.
The x-coordinates of all inflection points a f of the function[tex]f(x) = -x^4 - 8x^3 + 6x - 2[/tex]are (-4, f(-4)) and (0, f(0)).
To find the intervals of concavity and the inflection points of the function[tex]f(x) = -x^4 - 8x^3 + 6x - 2,[/tex] we need to find the second derivative and analyze its sign.
First, we find the first derivative:
[tex]f'(x) = -4x^3 - 24x^2 + 6[/tex]
Then, we find the second derivative:
[tex]f''(x) = -12x^2 - 48x[/tex]
To determine the intervals of concavity, we need to find where f''(x) is positive or negative.
[tex]f''(x) = -12x^2 - 48x = -12x(x + 4)[/tex]
f''(x) is negative for x < -4 and x > 0, and positive for -4 < x < 0.
Therefore, the function f(x) is concave down on the intervals (-∞, -4) and (0, ∞), and concave up on the interval (-4, 0).
To find the inflection points, we need to find where the concavity changes. This occurs at x = -4 and x = 0.
At x = -4, the function changes from concave down to concave up. Therefore, (-4, f(-4)) is an inflection point.
At x = 0, the function changes from concave up to concave down. Therefore, (0, f(0)) is also an inflection point.
Thus, the inflection points of f(x) are (-4, f(-4)) and (0, f(0)).
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Why are rectangles relatable to factors
Rectangles are relatable to factors because of their areas and perimeter equations
Why are rectangles relatable to factorsFrom the question, we have the following parameters that can be used in our computation:
Explaining why rectangles are relatable to factors
Rectangles are relatable to factors because of the following reasons
Perimeter = 2 * (Length + width)
Area = Length * width
This means that in calculating the areas and the perimeters of a rectangles, we make use of arithmetic expressions
These arithmetic expressions, when expanded form terms and factors of expression
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Please help asap I need this until tmr
The following table shows the weight of a cat in pounds and the corresponding number of cans of cat food to be given each day.
To complete the table, we need to use the information that the directions on the small cans of cat food say to feed a cat 1 can of food each day for every 4 pounds of body weight.
For example, for a cat weighing 4 pounds, we need to give 1 can of food each day.
For a cat weighing 5 pounds, we need to give more than 1 can but less than 2 cans of food each day.
To find the exact number of cans, we can use the formula:
cans per day = weight in pounds / 4
Substituting the given values, we get:
cans per day = 5 / 4
cans per day = 1.25
Therefore, for a cat weighing 5 pounds, we need to give 1.25 cans of food each day. We can round this to the nearest tenth to get 1.3 cans per day.
Similarly, we can use the formula to complete the rest of the table:
KIT-E-KAT weight in pounds cans per day
4 1
5 1.3
6 1.5
7 1.8
8 2
9 2.3
10 2.5
11 2.8
12 3
13 3.3
14 3.5
15 3.8
Therefore, the completed table shows the weight of a cat in pounds and the corresponding number of cans of cat food to be given each day.
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Find the derivative of the function f by using the rules of differentiation. f(x) = 7/x^3 – 2/x^2 – 1/x + 140
f’(x) =
Since the derivative of a constant is always 0, we can drop the last term:
f’(x) = -21/x^4 + 4/x^3 + 1/x^2
Using the rules of differentiation, we can find the derivative of f(x) by taking the derivative of each term separately. The power rule and the constant multiple rule will come in handy here.
f(x) = 7/x^3 – 2/x^2 – 1/x + 140
f’(x) = d/dx(7/x^3) – d/dx(2/x^2) – d/dx(1/x) + d/dx(140)
To find the derivative of 7/x^3, we can use the power rule, which states that the derivative of x^n is nx^(n-1).
f’(x) = -21/x^4 – (-4/x^3) – (-1/x^2) + 0
To find the derivative of -2/x^2, we can again use the power rule:
f’(x) = -21/x^4 + 4/x^3 – (-1/x^2) + 0
To find the derivative of -1/x, we use the power rule once more:
f’(x) = -21/x^4 + 4/x^3 + 1/x^2 + 0
And since the derivative of a constant is always 0, we can drop the last term:
f’(x) = -21/x^4 + 4/x^3 + 1/x^2
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According to these three facts, which statements are true? Circle D has center (2, 3) and radius 7. Circle F is a translation of circle D, 2 units right. Circle F is a dilation of circle D with a scale factor of 4. Select each correct answer. Responses Circle F and circle D are similar. Circle , F, and circle , D, are similar. The radius of circle F is 28. The radius of circle , F, is 28. The center of circle F is (0, 3). The center of circle , F, is , begin ordered pair 0 comma 3 end ordered pair,. Circle F and circle D are congruent. Circle , F, and circle , D, are congruent
Answer:
The answer to your problem is:
The radius of circle F is 28.
Circle F and circle D are similar.
Step-by-step explanation:
How to find the radius:
A = π × [tex]r^{2}[/tex]
But the radius of a circle from diameter. If you can recall the diameter d, the radius is r = d / 2.
By looking at our facts we can actually see ( if we use the comparing method ) that the circles, F & D are very much similar.
Thus the answer to your problem is:
The radius of circle F is 28.
Circle F and circle D are similar.
Find the divergence of vector fields at all points where they are defined
div ( (2x^2 - sin(xz)) i + 5j - (sin (Xz)) k)
The divergence of vector fields at all points where they are defined ar 4x - 2xcos(xz) for all points in R3.
The divergence of the given vector field F = (2x^2 - sin(xz)) i + 5j - (sin (xz)) k can be found using the formula for divergence:
div(F) = (∂Fx/∂x) + (∂Fy/∂y) + (∂Fz/∂z)
Here, Fx = (2x² - sin(xz)), Fy = 5, and Fz = -sin(xz). Taking the partial derivatives, we get:
∂Fx/∂x = 4x - zcos(xz)
∂Fy/∂y = 0
∂Fz/∂z = -xcos(xz)
Therefore, the divergence of F is:
div(F) = (∂Fx/∂x) + (∂Fy/∂y) + (∂Fz/∂z) = 4x - zcos(xz) - xcos(xz) = 4x - 2xcos(xz)
The divergence of F is defined for all points where F is defined, which is the entire 3-dimensional space. So, the divergence of F is 4x - 2xcos(xz) for all points in R3.
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HELP PLEASE!! the function f(x)has a vertical asymptote at x=[blank]
Answer:
Step-by-step explanation:
Solution: -4
The graph gets closer and closer to the line x=-4 but never touches it.
5u–u+3u=14
help! me please
Answer:
u = 2
Step-by-step explanation:
Can anyone tell me the coordinates of this graph?
What is the circumference of the circle with a radius of 1.5 meters? Approximate using π = 3.14.
9.42 meters
7.07 meters
4.64 meters
4.71 meters
Answer:
9.42 meters
Step-by-step explanation:
radius= 1.5
double the radius to get the diameter
diameter= 3
to find the circumference the equation is π × d
3.14 × 3= 9.42
circumference= 9.42
Answer: B
The guy above is wrong! The correct answer is 7.07, and I double checked with a circumference calculator.
Step-by-step explanation:
-To find the circumference of a circle, you can use the formula C = πd.
-By using this formula the answer found is 7.07
This is 100% the right answer, trust me.
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Calculate the bearing of U from T. U N 32° T
The bearing of U from T in the image is 32 degrees South by West of T
What is Bearing?In mathematics, bearings refer to the direction of an object or location in relation to two points. It is determined by the angle between the line joining them and that of the north.
Measured typically in degrees, it follows a cardinal system where 0° or 360° signifies North; East stands for 90°, South denotes at 180° while West represents 270°.
Thus, it can be seen that the bearing of U from T in the image is 32 degrees South by West of T
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Please help I need it ASAP, also needs to be rounded to the nearest 10th
The length of segment BC is given as follows:
BC = 47.2 km.
What is the law of cosines?The Law of Cosines is a trigonometric formula that relates the lengths of the sides of a triangle to the cosine of one of its angles. It is also known as the Cosine Rule.
The Law of Cosines states that for any triangle with sides a, b, and c and angle C opposite to side c, the following equation holds true:
c² = a² + b² - 2ab cos(C)
The parameters for this problem are given as follows:
a = 27.8, b = 24.7, C = 129.1
Hence the length of segment BC is given as follows:
(BC)² = 27.8² + 24.7² - 2 x 27.8 x 24.7 x cosine of 129.1 degrees
(BC)² = 2249.0497
[tex]BC = \sqrt{2249.0497}[/tex]
BC = 47.2 km.
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Earth's distance from the sun is 1. 496 x 108 km. Saturn's distance from the sun is 1. 4246 x 10 km. How many times further from the sun is Saturn? Explain how you arrived at your answer.
Saturn is approximately 9.52 times further from the sun than Earth.
To find out how many times further from the sun Saturn is compared to Earth, we need to divide Saturn's distance from the sun by Earth's distance from the sun.
First, let's correct the distances given:
- Earth's distance from the sun: 1.496 x 10^8 km
- Saturn's distance from the sun: 1.4246 x 10^9 km (I assume you missed the exponent)
Now, let's calculate the ratio:
Ratio = (Saturn's distance) / (Earth's distance)
Ratio = (1.4246 x 10^9 km) / (1.496 x 10^8 km)
To make the calculation easier, let's factor out the common exponent (10^8):
Ratio = (1.4246 x 10) / (1.496)
Ratio ≈ 9.52
So, Saturn is approximately 9.52 times further from the sun than Earth.
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Help me please I dont know the value to y
Answer:
y=9
Step-by-step explanation:
The opposite angles of 2 intersecting lines are equal.
11y-36⁰=63⁰
11y=63⁰+36⁰
11y=99⁰
y=9
Hope this helps!
in right triangle abc, mzb + m2c. let sinb = r and cos b = s. what is sinc-cosc?
The value of the trigonometric expression sin c - cos c is: s - r
How to solve Trigonometric Ratios?The three most common trigonometric ratios are:
sin x = opposite/hypotenuse
cos x = adjacent/hypotenuse
tan x = opposite/adjacent
We are given that:
sinb = r and cos b = s
Thus, from the diagram attached, we can see that:
sin B = rh/h = r
cos B = sh/h = s
Thus, using trigonometric ratios, we can equally say that:
cos C = rh/h = r
sin C = sh/h = s
Thus:
sin c - cos c = s - r
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This magic grid contains number sequences that increase in steps. What is the missing number? A 16 B 8 C 4 D 12 E 20
Answer:
12
Step-by-step explanation:
The numbers increase by 4 on each row.
two cards are drawn from a deck of 52 playing cards. the first card is not replace before the 2nd card is drawn. what is the probabilty of drawing a king and another king?
A. 3/676
B. 1/221
C. 1/169
D. 2/169
Answer:
1/221.
Step-by-step explanation:
Probability(first card is a King) = 4/52 = 1/13 (as there are 4 kings in the pack).
Now there are 51 cards left in the pack, 3 of which are Kings, so:
Probability(second card is a King) = 3/51 = 1/17.
These 2 events are independent so we multiply the probabilities:
Required probability =
1/13 * 1/17
= 1/221.
Maria records random speeds from three different Internet providers in the table. ProviderDownload Speed (megabits per second)CityNet3. 6, 3. 7, 3. 7, 3. 6, 3. 9Able Cable3. 9, 3. 9, 4. 1, 4. 0, 4. 1Tel-N-Net3. 9, 3. 7, 4. 0, 3. 6, 3. 8 Which company offers the fastest mean downloading speed?  00:00 CityNet  00:00 Able Cable  00:00 Tel-N-Net  00:00 Impossible to determine from the information given
Able Cable offers the fastest mean downloading speed among the three providers with a speed of 4.0 Mbps.
How to determine the fastest internet provider?We can calculate the mean (average) download speed for each provider and compare them to determine which company offers the fastest mean downloading speed.
Based on the given data, the mean download speed for each provider is:
City Net: (3.6 + 3.7 + 3.7 + 3.6 + 3.9) / 5 = 3.7 megabits per second (Mbps)
Able Cable: (3.9 + 3.9 + 4.1 + 4.0 + 4.1) / 5 = 4.0 Mbps
Tel-N-Net: (3.9 + 3.7 + 4.0 + 3.6 + 3.8) / 5 = 3.8 Mbps
Therefore, Able Cable offers the fastest mean downloading speed among the three providers with a speed of 4.0 Mbps.
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Savannah recorded the average rainfall amount, in inches, for two cities over the course of 6 months. Show your work
City A: {2.5, 3, 6, 1.5, 4, 1}
City B: {4, 7, 3.5, 4, 3.5, 2}
What is the mean monthly rainfall amount for each city?
What is the mean absolute deviation (MAD) for each city? Round to the nearest tenth.
What is the median for each city?
Hello, I am Alyssa Ann Verrett.
Put the numbers in order:
City A: {2, 3.5, 4, 4, 5, 5.5}
City B: {3.5, 4, 5, 5.5, 6, 6}
a)
The mean monthly rainfall amount for city A: 4 in;
The mean monthly rainfall amount for city B: 5 in;
b)
The MAD monthly rainfall amount for city A: 0.8 in;
The MAD monthly rainfall amount for city B: 0.8 in;
c)
The median monthly rainfall amount for city A: 4 in;
The median monthly rainfall amount for city A: 5.25 in;
Step-by-step explanation:
a) The general definition of mean of a set X is:
mean = (x₁ + x₂ + x₃ + ... xₙ)/n
For City a:
mean = (4+3.5+5+5.5+4+2)/6 = 4
For City b:
mean = (5+6+3.5+5.5+4+6)/6 = 5
b) The general definition of mean absolute deviation of a set X is:
MAD = (|x₁-mean| + |x₂-mean| + |x₃-mean| + ... + |xₙ-mean|)/n
For City a:
MAD = ( |4-4| + |3.5-4| + |5-4| + |5.5-4| + |4-4| + |2-4| )/6 = (0 + 0.5 + 1 + 1.5 + 0 + 2)/6 = 5/6 =0.8
For City b:
MAD = ( |5-5| + |6-5| + |3.5-5| + |5.5-5| + |4-5| + |6-5| )/6 = (0 + 1 + 1.5 + 0.5 + 1 + 1)/6 = 5/6 = 0.8
c) The general definition of median depends on the quantity of elements in the set X and it represents the middlemost value of the set:
When the quantity is odd:
median= x₍ₙ₊₁₎/₂
When the quantity is even:
median= (xₙ/₂ + x ₙ₊₂/₂) /2
For City A:
median = 2, 3.5, 4, 4, 5, 5.5 = (4 + 4) / 2 = 4
For City B:
median = 3.5, 4, 5, 5.5, 6, 6 = (5 + 5.5) / 2 = 5.25
Paula works part time ABC Nursery. She makes $5 per hour watering plants and $10 per hour sweeping the nursery. Paula is a full-time student so she cannot work more than 12 hours each week but must make at least $60 per week.
Part A: Write the system of inequalities that models this scenario.
Part B: Describe the graph of the system of inequalities, including shading and the types of lines graphed. Provide a description of the solution set.
The system of inequalities that models this scenario are:
x + y ≤ 12 (she is unable to work more than 12 hours each week)5x + 10y ≥ 60 (she need to make at least $60 per week)What is the system of inequalities?Part A: Based on the question, we take x be the number of hours that Paula spends watering plants and also we take y be the number of hours she spends sweeping the nursery. Hence system of inequalities equation will be:
x + y ≤ 12 (she is unable to work more than 12 hours each week)
5x + 10y ≥ 60 (she need to make about $60 per week)
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Select the proper inverse operation to check the answer to 25
-13=12
12+13 = 25, therefor the answer is correct
Evaluate the integral (Use symbolic notation and fractions where needed. Use C for the arbitrary constant. Absorb into C as much as possible.) 3 V x2 +8514 dx = Shule) 32+2). 10/8+) 6 + + *(x+8) corec
To evaluate the integral ∫(3/(√(x² + 8514))) dx, we can use the substitution u = x² + 8514 and du/dx = 2x, which gives us:
∫(3/(√(x² + 8514))) dx = (3/2)∫(1/√u) du
= (3/2) * 2√u + C
= 3√(x² + 8514) + C
Note that we absorbed the arbitrary constant into C as much as possible.
It seems that your question contains some typos and unclear expressions. However, I can help you evaluate a definite integral that includes fractions and an arbitrary constant.
Consider the integral:
∫(3√(x² + 8514) dx)
To solve this integral, let's perform a substitution:
u = x² + 8514
du = 2x dx
Now, we can rewrite the integral as:
(3/2) ∫(√u du)
Now, we can integrate:
(3/2) ∫(u^(1/2) du) = (3/2) * (2/3) * u^(3/2) + C
Now, substitute u back with the original expression:
(3/2) * (2/3) * (x² + 8514)^(3/2) + C = (x² + 8514)^(3/2) + C
So, the evaluated integral is:
(x^2 + 8514)^(3/2) + C
Where C is the arbitrary constant.
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The value in dollars, v (x), of a certain truck after x years is represented
The truck would have lost 36% of its initial value.
How we get the initial value?The value in dollars, v(x), of a certain truck after x years can be represented by a mathematical function or equation. In the absence of a specific equation, it is difficult to provide an answer.
However, I can provide an example of a possible equation that represents the depreciation of a truck's value over time.
Let's assume that the truck loses 20% of its value every year. If the initial value of the truck is V0 dollars, then the value of the truck after x years, Vx, can be represented by the following equation:
Vx = [tex]V0(0.8)^x[/tex]
In this equation, the term [tex](0.8)^x[/tex] represents the percentage of the truck's value that remains after x years of depreciation. For example, after one year, the truck's value would be V1 = [tex]V0(0.8)^1[/tex] = 0.8V0,
which means that the truck would have lost 20% of its initial value. After two years, the truck's value would be V2 = V0[tex](0.8)^2[/tex]= 0.64V0,
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3x − 15y = 11 in slope intercept form
Answer:
To convert the equation 3x - 15y = 11 into slope-intercept form, we need to solve for y.
First, we'll subtract 3x from both sides:
-15y = -3x + 11
Next, we'll divide both sides by -15:
y = (3/15)x - (11/15)
Simplifying the fraction:
y = (1/5)x - (11/15)
This is the slope-intercept form, where the slope is 1/5 and the y-intercept is -11/15.
What is the area of a regular hexagon with side length of 12. 7 and apothem length of 11?
PLEASE HELP!
The area of the regular hexagon with a side length of 12.7 and apothem length of 11 is approximately 416.61 square units.
To find the area of a regular hexagon, you can use the formula , where A is the [tex]A =\frac{3\sqrt{3} }{2} (s^{2} )[/tex]area, s is the length of one side, and √3 is the square root of 3.
However, since the apothem length is given, you can also use the formula , where ap is the apothem length and p is the perimeter of the hexagon.
First, let's find the perimeter of the hexagon. Since a hexagon has six sides, the perimeter will be 6 x 12.7 = 76.2.
Next, we can use the apothem length of 11 and the side length of 12.7 to find the length of the radius of the circle inscribed in the hexagon. This is because the apothem is the distance from the center of the hexagon to the midpoint of any side, and the radius is the distance from the center to any vertex.
Using the Pythagorean theorem, we can find the radius:
[tex]r^2 = ap^2 + (\frac{s}{2} )^{2}[/tex]
[tex]r^2 = 11^2 + (\frac{12.2}{7} )^{2}[/tex]
[tex]r^2 = 121 + 40.1225[/tex]
[tex]r^2 = 161.1225[/tex]
[tex]r = \sqrt{161.1225}[/tex]
[tex]r = 12.69[/tex]
Now that we know the radius, we can use the formula for the area of a regular polygon in terms of the radius: A = (1/2) x r x ap x n, where n is the number of sides (which is 6 for a hexagon).
Plugging in the values we have:
[tex]A = \frac{1}{2} (12.69)(11)(6)[/tex]
[tex]A = 416.61[/tex]
Therefore, the area of the regular hexagon with a side length of 12.7 and apothem length of 11 is approximately 416.61 square units.
To know more about "Hexagon" refer here:
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