If it's a regular nonagon, each exterior angle has measure 360°/9 = 40°, so the supplementary interior angles each have measure 180° - 40° = 140°.
We can split up the nonagon into 9 congruent isosceles triangles whose longer side coincides with the radius of the circle. (The language in the question is a bit ambiguous; I think it's clearler to say the nonagon is itself circumscribed by the circle, so that each of its vertices lie on the circle. See attached image - not mine, but it's in public domain.)
As the image suggests, each triangle will have interior angles measuring 70°, 70°, and 40°.
We can use trigonometry to find the side length of the nonagon, i.e. the length of the shortest side of each triangle - I'll call it x. For example, using the law of cosines,
x² = 4² + 4² - 2 • 4 • 4 cos(40°) ⇒ x = 4√2 √(1 - cos(40°))
Then the perimeter of the nonagon is
9x = 36√2 √(1 - cos(40°)) in ≈ 24.623 in
The area of a triangle is 1/2 the product of its base and height. The base will be b = x, but to get the height we cut the isosceles triangle in half to produce a right triangle. We use trig again to determine its height h:
tan(70°) = h/(b/2) ⇒ h = 1/2 x tan(70°)
so each triangle contributes an area of
a = 1/2 bh = 1/4 x² tan(70°) ≈ 5.142 in²
and so the area of the nonagon is
9a = 9x²/8 tan(70°) ≈ 46.281 in²
The value of x + x(x^x) when x = 2 is:
(a) 10,
(b) 16
(c) 18,
(d) 36,
(e) 64
the value of x + x(x^x) when x = 2.
solution:x + x(x^x)
by putting the value of x = 2 in the above expression we get:
2 + 2(2^2)
= 2 + 2(2 × 2)
= 2 + 2(4)
= 2 + 8
= 10
therefore, the value of x + x(x^x) when x = 2 is 10.
answer= option a
Answer is option a) = 10
have a great day
hope this helps
When the shadow of a flagpole is 36 m long, a 1.8-m fencepost casts a shadow that is 3 m long. How tall is the flagpole?
Answer:
21.6 m long
Step-by-step explanation:
To do this, we find the scale factor of the fencepost and the shadow.
3/1.8 = 1.66666667
So, we know that when we take the original length and multiply it, we get the new one, so:
1.666666667 * x = 36
x being the original length. Now, we divide both sides by 1.66666667 to get x alone and find the original length.
x = 21.6
To double check, we can take the scale factor and multiply it by the original to get the shadow.
21.6 * 1.666666667 = 36
It is correct
Please help i have an assignment due TODAY i need to get this done
rules:
NO LINKS not risking a virus
Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of error to four decimal
places.
95% confidence; the sample size is 10,000, of which 40% are successes
0.0096
0.0126
0.0072
0.0110
Ik The answer is 0.0096 but don’t know how to get that. Would someone show steps?
Help but pls explain you thought
Question is in the image
Answer:
16%
Step-by-step explanation:
4 people like rock
and there are 25 ppl all together
4/25=0.16
16%
5. How far can a person run in 15 minutes if he or she runs at an
average speed of 16 km/ty? (HINT: Remember to convert minutes to
hours.)
Now
Distance=Speed ×TimeDistance=16(1/4)Distance=4kmAnswer:
4 km
Step-by-step explanation:
QuestionHow far can a person run in 15 minutes if he or she runs at an average speed of 16 km/h?
Solution1 hours = 60 minutes
[tex]\implies \sf 16 km/h = \dfrac{16\:km/h}{60\:min}=\dfrac{4}{15} km/min[/tex]
If the person runs for 15 minutes, then:
[tex]\implies \sf total\:distance\:run=\dfrac{4}{15}\:km/min \times 15\:min=4\:km[/tex]
What is the maximum number of 1 cubic centimeter cubes you can fit into a box with a volume of 32 cubic centimeters?
The maximum number of 1 cubic centimeter cubes that will fit into a box with a volume of 32 cm³ is: 32 cubes.
What is the Volume of a Cube?The volume of a cube = s³, where s is the edge length of the cube.
Given the following:
Volume of 1 cube = 1 cubic centimeters
Box volume = 32 cubic centimeters
Number of cubes that will fit into the box = 32/1 = 32 cubes.
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The tub started with
gallons of water.
Use the drop-down menu to complete the statement. What is 3 ÷ 2 5 ? To find the quotient, jump groups of . A number line going from 0 to 3. Numbers 0, 1, 2, and 3 are marked on the line. Marks divide the spaces between each number into 5 equal parts.
2/5 on edge
Yw and pls mark me brainiest :D
Perfomance task pre-cal
Part 1: Determine the limits of a function given a graph
The value of limits and function values for a, b, c, d, e, f, g, h, i, and j are 3, -1, does not exist, 3, 1, 2, does not exist, 2 +∞, and -∞ and doesn't follow continuity conditions and its jump continuity.
What is the limit?A limit is a value at which a function approaches the output for the given values in mathematics. Limits are used to determine integrals, derivatives, and continuity in calculus and mathematics.
We have a graph of a function:
For [tex]\lim_{x \to -1^{-1}} f(x)[/tex]
As we can see x approaches -1 and it is a left-hand limit.
[tex]\lim_{x \to -1^{-1}} f(x) = 3[/tex]
For [tex]\lim_{x \to -1^{+1}} f(x)[/tex]
The x approaches the +1 and it is the right-hand limit.
[tex]\lim_{x \to -1^{+1}} f(x) = -1[/tex]
For [tex]\lim_{x \to -1} f(x)[/tex]
Since the left hand and right-hand limits are not the same,
[tex]\lim_{x \to -1^{+1}} f(x)[/tex] = does not exist
From the graph:
f(-1) = 3
Similarly, we can find further values of the limits and functions value:
[tex]\lim_{x \to 2^{-1}} f(x) = 1[/tex]
[tex]\lim_{x \to 2^{+1}} f(x) = 2[/tex]
For [tex]\lim_{x \to 2^{}} f(x)[/tex]
Since the left hand and right-hand limits are not the same,
[tex]\lim_{x \to 2^{}} f(x)[/tex] = does not exist
f(2) = 2
[tex]\lim_{x \to -\infty} f(x) = +\infty[/tex]
[tex]\lim_{x \to +\infty} f(x) = -\infty[/tex]
There are three conditions a graph must follow:
1) function value defined at any given point.
2) left-hand limit and right-hand limit must be equal
3) function value at the point and limit value at the same point must be the same.
In the given function the graph doesn't follow these conditions and its jump continuity.
Thus, the value of limits and function values for a, b, c, d, e, f, g, h, i, and j are 3, -1, does not exist, 3, 1, 2, does not exist, 2 +∞, and -∞ and doesn't follow continuity conditions and its jump continuity.
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#SPJ1
Enter the correct answer in the box.
Write the expression (x4)8 in simplest form.
Answer:
x³²
Step-by-step explanation:
When raising exponents to another power, multiply the exponents given.
That means that:
(x⁴)⁸ = x⁽⁴⁾⁽⁸⁾ = x³²
graph the linear equation -x+2y=2
The graph of the given linear equation, y = 1/2x + 1 (-x+2y=2), is given in the diagram attached below.
What is the Graph of a Linear Equation?The graph of a linear equation is a straight line graph, and it is represented, in slope-intercept form as, y = mx + b, where m is the slope and b is the y-intercept of the graph.
Given the linear equation, -x+2y=2, rewrite in slope-intercept form:
-x+2y=2
2y = x + 2
y = x/2 + 2/2
y = 1/2x + 1
Thus, the graph of the linear equation is drawn as shown in the image attached below.
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Fill in the missing numbers to complete the linear equation that gives the rule for this table.
х y
2 -36
3 -33
4 -30
5 -27
Y= ___x - ___
Answer:
y = 3x - 42
Step-by-step explanation:
The equation of a line if y = mx + cFirst, choose two of the x values with their respective y valuesI’ll choose 2 & -36 and 3 & -33We need to find the gradient of this line (which is the m in y = mx + c)We can do this by finding the difference in the y values and divide this by the difference in the x valuesSo this would be [tex]\frac{-33--36}{3-2} = \frac{3}{1}=3[/tex]So far we have y = 3x + cUsing one of the x values and their respective y value, substitute these values into the formulaI’ll choose 4 & -30-30 = 3 × 4 + c-30 = 12 + cc = -30 - 12 = -42So the equation is y = 3x - 42!help me please :c :C
Answer:
214 square inch is the area of the figure
△ABC is right, and M, N, and T are points of tangency of the inscribed circle. Find m∠MNT.
The angle of inscribed polygon m∠MNT from the triangle ABC is 45°
What is an inscribed polygon?An inscribed polygon is a polygon whose vertices lie on the circle and the circle inscribing the polygon is known to be a circumscribed circle. But let's not forget that the circle is also inscribed in another right-angle triangle.
However, using the inscribed right angle theorem:
Supposed that a right triangle is inscribed in a circle;
We can infer that the hypotenuse is the diameter of the circle.From the given image, line MN is the diameter of the circle since that is the only diameter in the circle.
And the angle facing the diameter is the right angle. i.e ∠T = 90°We know that the sum of angles in a triangle is 180°. So, if ∠T = 90°, ∠N and ∠M = x
i.e.
90° + x + x = 180°
90° + 2x = 180°
2x = 180° - 90°
2x = 90°
x = 90°
x = 45°
Therefore, we can conclude that angle m∠MNT = 45°
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Select the correct answer.
Simplify the following expression.
Answer:
A. 1/49, or 0.02040
if f(x)=x2-x , show that f(x+1) =f(-x) topic domain and range
f(x+1):-
(x+1)²-xx²+2x+1-xx²+x-1f(-x)
(-x)²-(-x)x²+xLHS≠RHS
Help help help help
Answer: 1
Step-by-step explanation:
We can start by dividing both sides by 5. This gives us
[tex]6 + s = 7[/tex]
Subtracting 6 from both sides gives us
[tex]s = 7-6=1[/tex]
To check, we can put 1 back in the equation:
[tex]5(6+1) = 35[/tex]
[tex]5(7) = 35[/tex]
Since 5 * 7 is 35, 1 is the answer.
What is 3^8*3^3/3^2 simplified as a exponent?
Answer:
19683
Step-by-step explanation:
5 stars please
HELP EEEEEEEK….. please
Answer:
5
Step-by-step explanation:
If it is 18 roses for 90 dollars, what is one rose worth?
90 dollars/18 roses=5 dollar per rose
Help please please!!!!!
Answer:
7/8 inch
Step-by-step explanation:
Convert 1 1/4 to improper fraction.
1 1/4 4/4 + 1/45/4Convert 5/4 to a fraction with a denominator of 8.
5/45/4 x 2/210/8Subtract 3/8 from 10/8
10/8 - 3/87/8 inchThe entire band decides to have a concert to raise the money for the trip. TIckets
for the concert will cost $7.50 each. A local business agrees to donate an ado tonal
$0.50 for each $1.00 in ticket sales to the band for their trip.
What is the least number of concert tickets the band must sell in order to raise te
rest of the money needed for the trip?
Answer:
yeah so you a g my guy
Step-by-step explanation:
PLEASE ANSWER AS SOON AS POSSIBLE WILL GIVE BRAINLESS TO THE FIRST CORRECT PERSON!!!
Find the value of x. Write your answer in the simplest form.
Answer:
9[tex]\sqrt{2}[/tex]/2
Step-by-step explanation:
Since this is a right triangle designated by the square box in the right side, we know 2 of the angles. 45 and 90. Add these 2 angles and subract them from 180 which turns out to be 45.
We can use the law of sines to solve.
sin90/9 = sin45/x
x = 9sin45 = 6.36 = 9[tex]\sqrt{2}[/tex]/2
Can someone help me please
I recommend using guathmath
A cylinder has a volume of 100π cubic meters.
a. What is the volume of the cylinder if the height is halved? Explain
b. What is the volume of the cylinder if the diameter is halved? Explain
Answer:
a) V/2 ; b) V/4
Step-by-step explanation:
a) V = πR²h
If h --> h/2 the new volume V' = πR²h/2 = V / 2
b) πR²h
If D --> D/2 then R --> R/2 and the new volume V" = π(R/2)²h = π(R)²h/4 = V/4
What is the length of SQ?
Check the picture below.
which graphed line represents an equation of a line with a slope of -2 and a point of line of (-1, 2)
A red line
B blue line
C green line
D purple line
Answer:
D
Step-by-step explanation:
by looking at the point you can see what has a slope.
it is also a decreasing slope
Convert the following functions.
Convert the exponential function,
12^3=x^4 y^3 z^6
, to its corresponding logarithmic function.
Write the log form from Part A into the expanded log form. **expression must be fully expanded for
The logarithmic function is the inverse of the exponential function
The logarithmic equivalent of the exponential function is log(12) = [tex]\frac 43[/tex]log(x) + log(y) + 2log(z)
How to convert the function?The exponential function is given as:
12^3=x^4 y^3 z^6
Take the logarithm of both sides
log(12^3) =log(x^4 y^3 z^6)
Apply the product rule of logarithm
log(12^3) =log(x^4) + log(y^3) + log(z^6)
Apply the power rule of logarithm
3log(12) = 4log(x) + 3log(y) + 6log(z)
Divide through by 3
log(12) = [tex]\frac 43[/tex]log(x) + log(y) + 2log(z)
Hence, the logarithmic equivalent of the exponential function is log(12) = [tex]\frac 43[/tex]log(x) + log(y) + 2log(z)
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Two methods to measure one's heart rate are:
A. Palpitation and monitor
B. None apply
C. Monitor and EKG
D. Palpitation and pulse rate
Answer:
C. Monitor and EKG
D. Palpitation and pulse rate
Explanation:
Correct me if I'm wrong:)