Answer:
5+4= 9, 6+3=9
Step-by-step explanation:
None, they both have equal scores
12 ounces for
$
8.09
dollars per ounce
ounces per dollar.
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1. Find the area of a regular octagon. Each side is 12 m.
2. The perimeter of a regular polygon is 72 feet. An exterior angle of the polygon measures 40°. Find the length of each side.
3. If the perimeter of a regular pentagon is 50 in. Find the area. Show a drawing and work please.
Answer:
1) 695.3 m²
2) 8 ft
3) 172.0 in²
Step-by-step explanation:
Question 1To find the area of a regular polygon, we can use the following formula:
\(\boxed{\begin{minipage}{5.5cm}\underline{Area of a regular polygon}\\\\$A=\dfrac{s^2n}{4 \tan\left(\dfrac{180^{\circ}}{n}\right)}$\\\\\\where:\\\phantom{ww}$\bullet$ $n$ is the number of sides.\\ \phantom{ww}$\bullet$ $s$ is the side length.\\\end{minipage}}\)
Given the polygon is an octagon, n = 8.
Given each side measures 12 m, s = 12.
Substitute the values of n and s into the formula for area and solve for A:
\(\implies A=\dfrac{(12)^2 \cdot 8}{4 \tan\left(\dfrac{180^{\circ}}{8}\right)}\)
\(\implies A=\dfrac{144 \cdot 8}{4 \tan\left(22.5^{\circ}\right)}\)
\(\implies A=\dfrac{1152}{4 \tan\left(22.5^{\circ}\right)}\)
\(\implies A=\dfrac{288}{\tan\left(22.5^{\circ}\right)}\)
\(\implies A=695.29350...\)
Therefore, the area of a regular octagon with side length 12 m is 695.3 m² rounded to the nearest tenth.
\(\hrulefill\)
Question 2The sum of an interior angle of a regular polygon and its corresponding exterior angle is always 180°.
If the exterior angle of a polygon measures 40°, then its interior angle measures 140°.
To determine the number of sides of the regular polygon given its interior angle, we can use this formula, where n is the number of sides:
\(\boxed{\textsf{Interior angle of a regular polygon} = \dfrac{180^{\circ}(n-2)}{n}}\)
Therefore:
\(\implies 140^{\circ}=\dfrac{180^{\circ}(n-2)}{n}\)
\(\implies 140^{\circ}n=180^{\circ}n - 360^{\circ}\)
\(\implies 40^{\circ}n=360^{\circ}\)
\(\implies n=\dfrac{360^{\circ}}{40^{\circ}}\)
\(\implies n=9\)
Therefore, the regular polygon has 9 sides.
To determine the length of each side, divide the given perimeter by the number of sides:
\(\implies \sf Side\;length=\dfrac{Perimeter}{\textsf{$n$}}\)
\(\implies \sf Side \;length=\dfrac{72}{9}\)
\(\implies \sf Side \;length=8\;ft\)
Therefore, the length of each side of the regular polygon is 8 ft.
\(\hrulefill\)
Question 3The area of a regular polygon can be calculated using the following formula:
\(\boxed{\begin{minipage}{5.5cm}\underline{Area of a regular polygon}\\\\$A=\dfrac{s^2n}{4 \tan\left(\dfrac{180^{\circ}}{n}\right)}$\\\\\\where:\\\phantom{ww}$\bullet$ $n$ is the number of sides.\\ \phantom{ww}$\bullet$ $s$ is the side length.\\\end{minipage}}\)
A regular pentagon has 5 sides, so n = 5.
If its perimeter is 50 inches, then the length of one side is 10 inches, so s = 10.
Substitute the values of s and n into the formula and solve for A:
\(\implies A=\dfrac{(10)^2 \cdot 5}{4 \tan\left(\dfrac{180^{\circ}}{5}\right)}\)
\(\implies A=\dfrac{100 \cdot 5}{4 \tan\left(36^{\circ}\right)}\)
\(\implies A=\dfrac{500}{4 \tan\left(36^{\circ}\right)}\)
\(\implies A=\dfrac{125}{\tan\left(36^{\circ}\right)}\)
\(\implies A=172.047740...\)
Therefore, the area of a regular pentagon with perimeter 50 inches is 172.0 in² rounded to the nearest tenth.
Answer:
1.695.29 m^2
2.8 feet
3. 172.0477 in^2
Step-by-step explanation:
1. The area of a regular octagon can be found using the formula:
\(\boxed{\bold{Area = 2a^2(1 + \sqrt{2})}}\)
where a is the length of one side of the octagon.
In this case, a = 12 m, so the area is:
\(\bold{Area = 2(12 m)^2(1 + \sqrt{2}) = 288m^2(1 + \sqrt2)=695.29 m^2}\)
Therefore, the Area of a regular octagon is 695.29 m^2
2.
The formula for the exterior angle of a regular polygon is:
\(\boxed{\bold{Exterior \:angle = \frac{360^o}{n}}}\)
where n is the number of sides in the polygon.
In this case, the exterior angle is 40°, so we can set up the following equation:
\(\bold{40^o=\frac{ 360^0 }{n}}\)
\(n=\frac{360}{40}=9\)
Therefore, the polygon has n=9 sides.
Perimeter=72ft.
We have
\(\boxed{\bold{Perimeter = n*s}}\)
where n is the number of sides in the polygon and s is the length of one side.
Substituting Value.
72 feet = 9*s
\(\bold{s =\frac{ 72 \:feet }{ 9}}\)
s = 8 feet
Therefore, the length of each side of the polygon is 8 feet.
3.
Solution:
A regular pentagon has five sides of equal length. If the perimeter of the pentagon is 50 in, then each side has a length = \(\bold{\frac{perimeter}{n}=\frac{50}{5 }= 10 in.}\)
The area of a regular pentagon can be found using the following formula:
\(\boxed{\bold{Area = \frac{1}{4}\sqrt{5(5+2\sqrt{5})} *s^2}}\)
where s is the length of one side of the Pentagon.
In this case, s = 10 in, so the area is:
\(\bold{Area= \frac{1}{4}\sqrt{5(5+2\sqrt{5})} *10^2=172.0477 in^2}\)
Drawing: Attachment
need this answer ASAP 20 points as reward
Two cylinders, a and b, each started with different amounts of water. The graph shows how the height of the water changed as the volume of water increased in each cylinder. Match the graphs of a and b to Cylinders P and Q. Explain your reasoning. height in centimeters b volume in milliliters P
To match the graphs of cylinders a and b to cylinders P and Q, we need to analyze the relationship between the height of the water and the volume of water in each cylinder.
Cylinder P would correspond to graph b, while Cylinder Q would correspond to graph a.
The reasoning behind this is as follows:
Cylinder P, corresponding to graph b, shows a steeper increase in height with increasing volume. This indicates that the water level rises quickly as more volume is added, suggesting that the cylinder has a smaller cross-sectional area. Since height is directly proportional to volume for a cylinder, a smaller cross-sectional area would result in a higher rise in height for the same volume of water.
Cylinder Q, corresponding to graph a, shows a slower increase in height with increasing volume. This implies that the water level rises more gradually as more volume is added, indicating a larger cross-sectional area. A larger cross-sectional area would result in a smaller increase in height for the same volume of water.
In summary, the steeper graph b matches Cylinder P with a smaller cross-sectional area, while the gentler graph a matches Cylinder Q with a larger cross-sectional area.
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can you pls solve this plsssss i am waiting , Thank you .
Answer:
24m
Step-by-step explanation:
a = πr^2
144π = πr^2
divide both sides by π
144 = r^2
Take the square root of both sides
12 = r
r = 12
-------------------------
d = 2r
d = 2(12)
d = 24
Rewrite the expression with a single base and exponent. (3^2*3^3)^3
The expression can be rewritten by given term as; 3^15
We need to simplify the expression below:
(3^2 x 3^3)^3
Remember that we can add these exponents, so we get:
(9 x 9)^3 = 81^3
Then we can rewrite this as:
531441
Takin the product between the exponents we will get:
(3^5)^3
Thus, the solution is 3^15
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helpp i forgot how to do this
Answer:
angle C=88 degrees
Step-by-step explanation:
angles A+B+C+D=360
angles A+C=360-119-65=176
angle A=angle C because it is a kite
2C=176
angle C=88 degrees
I WILL GIVE BRAINLIEST TO WHOMEVER ANSWERS FIRST
simplify 0.75 : 2 5/16
To start this is a ratio, and the goal is to get at least 1 to be a whole number so first lets get the number below 1 to 1.
0.75 : 2 5/16 ---> (x1.3333 on both sides) ---> 1 : 3 1/12.
Next, if needed for your answer, lets get the other number to be a whole number as well. We can do this my multiplying both sides by 12 since the fraction on 3 1/12 is 1/12.
1 : 3 1/12 --> (x12 on both sides) ---> 12 : 37
Your final answer will either be 1 : 3 1/12 or 12 : 37, depending on the formatting expected for your homework assignment.
4. In a class of 26 students, 18 of the students have a pet. Of
the pet owners, 12 prefer dogs to cats. Of the 8 non-pet
owners, 3 prefer dogs to cats. What is the probability of
selecting a student from the class who is a pet owner or
prefers cats to dogs?
The probability of selecting a student from the class who is a pet owner or prefers cats to dogs is; 0.4
What is the probability of selection?In probability, If events A and B are not mutually exclusive, then the probability of A or B is expressed as;
p(A or B) = p(A) * p(B).
Total number of students = 26
Total number of students that are pet owners = 18
Total number of students that prefers cats to dogs = 26 - (8 + 3) = 15
Thus;
P(pet owner) = 18/26
P(prefers cats to dogs) = 15/26
P(Pet owner or prefers cats to dogs) = (18/26) * (15/26)
= 0.4
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A metalworker has a metal alloy that is 15% copper and another alloy that is 70% copper. How many kilograms of each alloy should the metalworker combine to create 80 kg of a
48% copper alloy?
The metalworker should use kilograms of the metal alloy that is 15% copper and kilograms of the metal alloy that is 70% copper
(Type whole numbers.)
Answer:
18 kg of 15% copper alloy
62 kg of 70% copper alloy
Step-by-step explanation:
Step 1: Calculate the total amount of copper present in 80 kg of 48% copper alloy
Total Copper = 80 x 0.48 = 38.4 kg
Step 2: Calculate the amount of 15% copper alloy required
15% Copper Alloy = 38.4 / 0.15 = 256 kg
Step 3: Calculate the amount of 70% copper alloy required
70% Copper Alloy = (80 - 256) = -176 kg
Step 4: Since the amount of 70% copper alloy required is negative, the metalworker should use 256 kg of the 15% copper alloy and 0 kg of the 70% copper alloy to create 80 kg of 48% copper alloy.
For each equation, choose Rational or Irrational to show your answer.
Find the area of the fairway between two streams on a golf course.
40 yd
50 yd
70 yd
40 yd
40 yd
7
40 yd
Area =
1yg2
pls help again!!:) THANK U
The area of the fairway between two streams on a gulf course is 3400 yd².
What is area?
The area is the region bounded by the shape of an object.
To calculate the area of the fairway between two streams on a golf course, we use the formula below
Formula:
Area of the fairway = Area of the square+ Area of the parallelogramA = L²+h(a+b)/2..................... Equation 1Where:
L = Length of the squareh = Height of the parallelograma,b = Two parallel sides of the parallelogramFrom the diagram in question,
Given:
L = 40 ydh = 30 yda = 40 ydb = 80 ydSubstitute these values into equation 1
A = 40²+30(80+40)/2A = 1600+1800A = 3400 yd²Hence, the area is 3400 yd².
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Help pls. No links. Thank you :)
Answer:
784
Step-by-step explanation:
Mark as Brainliest
P.S
other person is wrong
2 345 000 000 in scientific notation
22) Daniel won 55 pieces of gum playing
basketball at his school's game night. Later,
he gave two to each of his friends. He only
has 3 remaining. How many friends does he
have?
Answer:
26 friends
Step-by-step explanation:
IRAs. You have $500,000 in your IRA (Individual Retirement Account) by the time you retire. You choose to invest this money in two funds: Fund A pays 5.2%/year and Fund B pays 7.7%/year. How should you divide your money between Fund A and Fund B to get an annual return of $34000?
Using the system of equations, we found that the amount to be invested in fund A is $180,000 and in fund B is $320,000.
What is meant by an equation?
A mathematical equation is a formula that uses the equals sign to represent the equality of two expressions. Two expressions are combined in an equation using an equal symbol ("="). The "left-hand side" and "right-hand side" of the equation are the two expressions on either side of the equals sign. Typically, we consider an equation's right side to be zero. As we can balance this by deducting the right-side expression from both sides' expressions, this won't reduce the generality.
The amount in the IRA account = $500,000
Let the amount invested in fund A be x and fund B be y.
x + y = 500,000
The amount received annually for fund A = 0.052x
The amount received annually for fund B = 0.077y
This amount is given as:
0.052x + 0.077y = 34,000
Now we have a system of equations.
x + y = 500,000
0.052x + 0.077y = 34,000
Multiply the first equation by 0.052.
0.052x + 0.052y = 26,000
0.052x + 0.077y = 34,000
Subtracting,
-0.025y = -8000
y = 320,000
Then, x = 500,000 - y = 500,000 - 320,000 = 180,000
Therefore using the system of equations, we found that the amount to be invested in fund A is $180,000 and in fund B is $320,000.
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|x+2| > 7
solve the following inequality for x
Answer:
x > 5 or x < -9
Pls mark brainliest. Thanks!
Julio tiene 12 años de edad y su padre tiene 42 años. ¿Cuántos años tendrá Julio cuando su padre tenga el doble de su edad?
Julio will be 30 years old when his father is twice his age.
To determine the age at which Julio will be twice his father's age, we need to find the age difference between them and then add that difference to Julio's current age.
Currently, Julio is 12 years old, and his father is 42 years old. The age difference between them is 42 - 12 = 30 years.
For Julio to be twice his father's age, the age difference needs to remain the same as it is currently. Therefore, when Julio is x years old, his father will be x + 30 years old.
Setting up an equation to solve for x:
x + 30 = 2x
Simplifying the equation, we subtract x from both sides:
30 = x
Thus, when Julio is 30 years old, his father will be 30 + 30 = 60 years old. At this point, Julio will indeed be twice his father's age.
Therefore, Julio will be 30 years old when his father is twice his age.
Note : the translated question is Julio is 12 years old and his father is 42 years old. How old will Julio be when his father is twice his age?
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william runs 40 yards in 4.5 seconds. at the same pace how long will he take to run 100yards?
Answer:
11.25 seconds
Step-by-step explanation:
first, we need to figure how how far william can run per second
we can find this by 40 ÷ 4.5
= 8.889 per second
so we know that 8.889 • s (seconds) = 100
8.889s = 100 divide both sides by 8.889
s = 11.25 seconds
Answer:
William will take 11.25 seconds to run 100 yards
Step-by-step explanation:
Constant Rate
William runs 40 yards in 4.5 seconds. The rate of change of the distance is
\(\frac{40}{4.5}\)
To run 100 yards, we divide by the rate obtained above:
\(\displaytstyle \frac{100}{\frac{40}{4.5}} =100*\frac{4.5}{40} =11.25\)
William will take 11.25 seconds to run 100 yards
can someone please help me
9514 1404 393
Answer:
central: XWR, VWUinscribed: VSTStep-by-step explanation:
Point W is the center of the circle. Any angle with W as its vertex is a central angle:
angles XWR and VWU are central angles
Any angle with its vertex on the circle and rays that intersect the circle is an inscribed angle.
angle VST is an inscribed angle
Work out the percentage change when a price of £20 is decreased to £3.
please look at my last couple questions!! 50% of my grade
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Packets of celery seeds contain exactly 10 seeds. Each seed has a probability of 0.85 of growing to maturity if properly planted. The success of one seed does not affect the success of any other seed. Let X represent the number of seeds that grow to maturity. Have the conditions for a binomial setting been met for this scenario? O Yes, all four conditions in BINS have been met. O No, the seeds are not independent of each other. O No, there are more than two outcomes for each seedling. O No, some packets will need to contain more than 10 seeds in order for the binomial setting to be met.
Answer:
YES: All four conditions in BINS have been satisfied.
Step-by-step explanation:
Check out the BINS conditions:
1. Is the number of trials a positive integer? YES
2. Is the experiment binary: either PASS or FAIL? YES
3. Is the probability of success given and in the range 0<p<1? YES
4. Are the outcomes independent? YES
YES: All four conditions in BINS have been satisfied.
Answer:
A on edge 2202
Step-by-step explanation:
HELP ASAP I'm trying to go to the mall todayy
Answer:
\(\pi \: d\)
Step-by-step explanation:
the circumference is equal to pi times diameter
can someone help me thanks
9514 1404 393
Answer:
4 ft/s3 ftStep-by-step explanation:
The height equation tells you the height increases 4 feet every time x (seconds) increases by 1. The rate of increase of height is 4 ft/second.
The equation also tells you the height is 3 feet at time = 0. That is, the initial height is 3 feet.
PLEASE HELP ITS URGENT DONT GUESS (also if you get it right ill mark you as brainliest)
Answer:
106.83ft
Step-by-step explanation:
29 + 29 + 19 = 77ft
Now we must calculate the semicircle, The diameter is 19ft
19ft x 3.14 = 59.66
since 59.66 would be a full circle, you divide it in half.
59.66/2=29.83
77+29.83=106.83ft
Here is a list of numbers:
20 8. 6. 11.3. 1572072.73
State the median
Answer:
20
Step-by-step explanation:
your middle median is 20 in ascending order it is also 20 *im in year 8 my explenation is bad*
In the following diagram,
What is the measure of
∠x
Answer:
Step-by-step explanation:
BAD = 42
x + 103 + 42 = 180
x = 180 - 145
x = 35
The state park has a perimeter of 38 miles. What is the area of the park . The width of park is 7 miles
Answer:
84 miles
Step-by-step explanation:
7+7=14
38-14=24
24/2=12
12 length
7 width
7x12=84