In a Science class, there are thirty students. Ten are males and twenty are females. On the last quiz, three males and six females earned an A. What is the approximate probability of selecting a male or a student that earned an A on the quiz?
0.53
0.10
0.43
0.63
Answers
P(student who got A) = 9/30
The real trick here is the word “or”
Since 6 females got an A they get added to the male students
P(male or got A) = (10 + 6)/30 = 16/30
The sample space looks like this:
Males A A A ? ? ? ? ? ? ?
Female A A A A A A ? ? ? ? ? ? ? ? ? ? ? ? ? ?
The only students excluded in the question are females who did not get an A
P(male or got an A) = 1 - P(female who didn’t get A) = (30 - 14)/30 = 16/30
16/30 = 0.53 (2 dp)
Related Questions
Which statements about the cylinder are true? Select two options.
The radius of the cylinder is 2x units.
The area of the cylinder's base is 1÷4π.x²
The area of the cylinder's base is 1÷2π.x²
The height of the cylinder is 2x units
The height of the cylinder is 4x units
Answers
The area of the cylinder's base is 1÷4π.x² is the correct option
What is a cylinder?
A cylinder is a three-dimensional solid in mathematics that maintains, at a given distance, two parallel bases connected by a curving surface. These bases often have a circular form (like a circle), and a line segment known as the axis connects the centres of the two bases. The height of the cylinder is "h," while the radius of the cylinder is "r," measuring the distance from the axis to the outside surface.
The three-dimensional form of a cylinder is made up of two parallel circular bases connected by a curving surface. The right cylinder is created when the centres of the circular bases cross each other. The axis, which represents the height of the cylinder, is the line segment that connects the two centres.
The cylinder seems to be a rectangle from the side perspective and a circle from the top view.
Since a cylinder has a curved form and no straight lines, it lacks vertices in contrast to cones, cubes, and cuboid shapes. Two of its faces are round.
According to the question volume of the cylinder is
1. πr^2h = πr^3
h=r=x/2
2.
The radius of cylinder is
= x/2
3.
The area of the cylinder's base is
= πr^2
= (π x^2)/4
4.
The height of the cylinder is =
radius= height =x/2
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standard form. (x+8)(x−6)
Answers
Answer:
x^2-2x-48
Step-by-step explanation:
FOIL
Firsts = x*x = x^2
outside = x*-6 = -6x
inside = 8*x = 8x
lasts = 8*-6 = -48
add all together x^2-6x+8x-48 = x^2-2x-48
Answer:
x² + 2x - 48
Step-by-step explanation:
( x + 8 ) ( x - 6 )
= x ( x - 6 ) + 8 ( x - 6 )
= x*x - 6*x + 8*x + 8*( - 6 )
= x² - 6x + 8x - 48
= x² + 2x - 48
Match each equation on the left with its solution on the right. No answer on the right will be used twice.
Answers
The correct match the following is shown below:
2x + 3 (x - 2) = 6 (x + 1) + x → x = -6
2x + 3 (x - 2) = 6 (x - 1) - x → All real numbers
2x + 3 (x - 2) = 6 (x - 1) + x → x = 0
2x + 3 (x - 1) = 6 (x - 1) - x → No solution.
What is equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side. It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Given:
The equation is, 2x + 3 (x - 2) = 6 (x + 1) + x, 2x + 3 (x - 2) = 6 (x - 1) - x, 2x + 3 (x - 2) = 6 (x - 1) + x, and 2x + 3 (x - 1) = 6 (x - 1) - x
Solve the above equations as shown below,
2x + 3 (x - 2) = 6 (x + 1) + x
2x + 3x - 6 = 6x + 6 + x
5x - 6 = 7x + 6
7x - 5x = -6 - 6
x = -6
2x + 3 (x - 2) = 6 (x - 1) - x
2x + 3x - 6 = 6x - 6 - x
5x - 6 = 5x - 6
Infinity solutions,
2x + 3 (x - 2) = 6 (x - 1) + x
2x + 3x - 6 = 6x - 6 + x
5x - 6 = 7x - 6
x = 0
2x + 3 (x - 1) = 6 (x - 1) - x
2x + 3x - 3 = 6x - 6 - x
5x - 3 = 5x - 6
Parallel line, hence, no solution.
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Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. H0: P=0.93 versus H1:p≠0.93 n=500, x=450, a=0.05 Is np0(1-P0) ≥10? Select the correct choice below and fill in the answer box to complete your choice. A. No because np0(1-P0) equals__ B. Yes, because np0(1-P0) equals__
Answers
Using the Central Limit Theorem, it is found that these conditions are required to avoid the high variability associated with small samples.
What does the Central Limit Theorem states?It states that for a proportion p in a sample of size n, the sampling distribution of sample proportion is approximately normal with mean and standard deviation , as long as[tex]np\geq 10[/tex] and [tex]n(1-p)\geq 10[/tex]From the equation of the standard error, we could see that if one of the conditions is not respected, the standard error would be very high, indicating a low accuracy of the estimate, hence it is found that these conditions are required to avoid the high variability associated with small samples.[tex]s=\sqrt{p(1-p)/n}[/tex]
If we compare the p value and using the significance level given [tex]\alpha=0.05[/tex] we have[tex]pv > \alpha[/tex] so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the proportion is not significantly different from 0.77.[tex]p v=2*p(z < -0.531)=0.595[/tex]
1) Data given and notation
n=500 represent the random sample taken
X=380 represent the number of people with some characteristic
estimated proportion of adults that said that it is morally wrong to not report all income on tax returns
is the value that we want to test
represent the significance level
Confidence=95% or 0.95
z would represent the statistic (variable of interest)
represent the p value (variable of interest)
2) Concepts and formulas to use
We need to conduct a hypothesis in order to test the claim that the true proportion is 0.7 .:
Null hypothesis:
Alternative hypothesis:
When we conduct a proportion test we need to use the z statistic, and the is given by:
(1) The One-Sample Proportion Test is used to assess whether a population proportion is significantly different from a hypothesized value Check for the assumptions that he sample must satisfy in order to apply the test
a)The random sample needs to be representative: On this case the problem no mention about it but we can assume it.
b) The sample needs to be large enough
3) Calculate the statistic
[tex]z=\frac{0.76 - 0.77}{\sqrt{\frac{0.77(1-77)}{500} } =0.531}[/tex]
Since we have all the info requires we can replace in formula (1) like this:
4) Statistical decision
It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.
The significance level provided [tex]\alpha =0.05[/tex]The next step would be calculate the p value for this test.
Since is a bilateral test the p value would be:
[tex]pv=2*p(z < -0.0531)=0.595[/tex]
If we compare the p value and using the significance level given we have so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the proportion is not significantly different from 0.77.
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At noon, ship A is 130 km west of ship B. Ship A is sailing east at 25 km/h and ship B is sailing north at 15 km/h. How fast is the distance between the ships changing at 4:00 PM?
Answers
√5 km/h fast is the distance between the ships changing at 4:00 PM .
What is the Pythagorean theorem ?
The Pythagorean theorem states that the squares on the hypotenuse of a right triangle, which is the side that faces the right angle, are equal when added together.
This is represented by the equation a2 + b2 = c2 in common algebraic notation.
Ship A is sailing 25 km/h east and Ship B is sailing 15 km north. They are giving us the time frame, which is 4 hours ( t = 4). Recall that Distance = Rate * time. Let us find the distance for each ship after 4 hours
Ship A Ship B
d=25*4 = 100 km d=15*4= 60 km
the Pythagorean theorem.
a2+b2=c2
(30)2+(60)2=c2
c=30√(5)
From the question, "How fast" is asking us for a rate. The rate on the hypotenuse side. We have to take the derivative of the pythagorean theorem with respect to time.
2a(da/dt) + 2b(db/dt) = 2c(dc/dt)
Solve for dc/dt
dc/dt = [a(da/dt) + b(db/dt)] / c
dc/dt = [30(-25) + 60(15)] / 30√5 ****Note: we have -25 as time increases, the distance is smaller
dc/dt = √5 km/h
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Which of the following statements is true regarding that equation |x+3|-2=k?
There are no solutions when k=-1 or when k=-3.
If k=-1 there are solutions, but if k=-3 there are no solutions.
If k=-3 there are solutions, but if k=-1 there are no solutions.
There are solutions when k=-1 and when k=-3.
Answers
There are solutions when k = -1 and when k = -3
What is Linear Equation in One Variable?
A linear equation is a one-variable equation of a straight line. The variable's only power is 1. Linear equations in one variable have the form ax + b = 0 and are solved using simple algebraic techniques.
Solution:
|x + 3| - 2 = k
Removing the modulus sign
x + 3 - 2 = k -----(i) = x + 1 = k
-x - 3 - 2 = k -----(ii) -x - 5 = k
Putting k = -1
(i) x = -2 and (ii) x = -4
Putting k = -3
(i) x = -4 and (ii) x = -2
Since, x has solution on both the values of k
We can say that,
There are solutions when k = -1 and when k = -3
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I don’t remember how to do this. Help
Answers
For question one is Another name of bj would be boj
There are two shapes on the coordinate plane shown. Which statement about the shapes is true? A. Shape A can be matched to shape B by reflecting it about the x-axis, then about the y-axis, and then shifting 1 on the x-axis and –3 on the y-axis. B. Shape A can be matched to shape B by reflecting about the origin and then shifting –3 on the x-axis and 1 on the y-axis. C. Shape A can be matched to shape B by reflecting it about the y-axis, then about the x-axis, and then dilating it from the origin by a factor of 2. D. Shape A can be matched to shape B by reflecting it about the y-axis, then about the x-axis, and then dilating it from the origin by a factor of .
Answers
Answer:
B. Shape A can be matched to shape B by reflecting about the origin and then shifting –3 on the x-axis and 1 on the y-axis.
Step-by-step explanation:
An artist is building a pedestal out of wood that will be used to display a piece of sculpture. She plans to cover the pedestal with tile. How much tile will it take to cover the pedestal, including the bottom?
224 square feet
192 square feet
144 square feet
288 square feet
Answers
tile will it take to cover the pedestal, including the bottom is 288 square feet
How much tile will it take to cover the pedestal, including the bottom?It depends on how big the pedestal is and how big the tiles are that are being used. It would require 192 square feet of tile to cover the pedestal, including the bottom, if the tiles were one foot square and the pedestal was four feet tall.To cover the pedestal, however, would require 224 square feet of tile if it were five feet tall and the chosen tiles were two feet square.Similar to this, 144 square feet of tile would be required to cover a pedestal that is three feet tall and two feet square. The pedestal would require 288 square feet of tile to cover it, including the bottom, assuming the tiles were one foot square and the pedestal was five feet tall.As you can see, the size of the pedestal and the tiles being used both affect how many tiles are needed to completely cover the pedestal.To learn more about a tiling project refer to:
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How many nine-letter words can be formed from the letters of hyperbola, using each letter once per
word? The words do not have to actually spell anything, of course.
Answers
The letters of "hyperbola" can be combined into 40,320 different nine-letter words by using each letter just once.
What are the Combinations?Combinations are the procedures used in mathematics to pick k things from n different items without replacement.
The following formula computes the combinations of k items from n:
(n, k) = n! / k!×(n-k)!
There are 8 letters in the word "hyperbola",
So, there are 8 choices for the first letter, 7 choices for the second letter, and so on, down to 1 choice for the last letter.
This means that there are :
⇒ 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 40,320
Therefore, 40,320 possible nine-letter words can be formed from the letters of "hyperbola" using each letter once per word.
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A decade ago, the average class size at Newton Middle School was 30 students. Now it is 30% smaller. What is the average class size currently?
Answers
The average class size of Newton middle school is 21.
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.
Given that a decade ago, the average class size at Newton Middle School was 30 students. Now it is 30% smaller.
The average class size will be calculated as,
Average class size = 30 x (70%)
Average class size = 30 x 0.7
Average class size = 21
Therefore, the average class size at Newton middle school is 21.
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Find (fog)(x).
f(x) = 5x
g(x) = 6x
Write your answer as a polynomial in simplest form.
(fog)(x) =
Answers
Answer: (fog)(x) = f(g(x)) = f(6x) = 5(6x) = 30x
So (fog)(x) = 30x, which is a polynomial in simplest form
Design An art class is making a mural for their school which has a triangle drawn in the middle. The length of the bottom of the triangle is x. Another side is 12 more than three times the length of the
bottom of the triangle. The last side is 4 more than the bottom of the triangle. Write and simplify an expression for the perimeter of the triangle.
Answers
Answer:
[tex]P_t=5x+16[/tex]
Step-by-step explanation:
The perimeter of the triangle will be the sum of all the sides,
[tex]P_t=a+b+c[/tex]
For this problem, let a=x, b=3x+12, and c=4+x. So,
[tex]P_t=(x)+(3x+12)+(4+x)\\P_t=x+3x+12+4+x\\P_t=x+3x+x+12+4\\P_t=5x+16[/tex]
Which of the following is a true proportion of the figure based on the triangle proportionality theorem?
A) i/j=h/k
B) j/k=j/i
C) h/i=h/k
D) k/i=j/i
Answers
A true proportion of the figure based on the triangle proportionality theorem is: A) i/j = h/k.
What is a triangle?In Mathematics, a triangle can be defined as a two-dimensional (2D) geometric shape that comprises three (3) sides, three (3) vertices and three (3) angles only.
What is the triangle proportionality theorem?The triangle proportionality theorem states that when any of the two (2) sides of a triangle is intersected by a straight line which is parallel to the third side of the triangle, then, the two (2) sides that are intersected would be divided proportionally and in the same ratio.
Since side TU is parallel to side QR, side TU will divide both sides QS and RS proportionally in accordance with the triangle proportionality theorem as follows;
RU/QT = SU/ST ≡ i/j = h/k
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DIRECTIONS: Use this information to answer Parts A and B.
A faucet supplies water at a constant rate. After 3 minutes, the faucet supplies 12 liters of water.
Part A
Use the Line Tool to graph the proportional relationship that gives the number of liters of water the facet supplies, y, after x minutes.
Answers
The graph of the proportional relationship is added as an attachment
How to determine the graph of the scenarioFrom the question, we have the following parameters that can be used in our computation:
Time = 3 minutes
Supply of water = 12 litres
Using the above parameters, we have the following ordered pairs
(0, 0) and (3, 12)
Rewrite the above points properly
So, we have the following ordered pairs
(x, y) = (0, 0) and (3, 12)
The gradient of the line is then calculated using the following slope equation
gradient = (y₂ - y₁)/(x₂ - x₁)
Where
(x, y) = (0, 0) and (3, 12)
Substitute the known values in the above equation
So, we have the following equation
gradient = (12 - 0)/(4 - 0)
Evaluate
gradient = 3
The equation of the line is then calculated as
y = gradient * x
Substitute the known values in the above equation
So, we have the following equation
y = 3 * x
Evaluate the products
y= 3x
Hence, the line equation is y= 3x
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find f^-1(x) for the function f(x)=x/2-4.
Answers
Answer:
f(x)=x/2-4
-f(x)=a
a=x/2-4
x=a/2-4
a/2-4=x /×2
a-8=2x
a=8+2x -> f^-1(x)=8+2x
At the halfway point of a telethon, a charity has only raised one quarter of its
target amount. If its total amount raised doubles each of the next two hours,
what percentage of its target amount will it have raised?
75%
80%
87.5%
93%
100%
Answers
Answer:75%
Step-by-step explanation:
Let R be the relation defined on P({1,……,100}) by A R B , if and only if |A n B| is even.
Is R reflexive? Is R symmetric? Is R anti-symmetric? Is R transitive?
Answers
Only the transitive relation is true for the provided relation for (x, y) R if x y defined on the set of positive integers.
Step-by-step explanation:Assuming (x, y), R
To determine whether or not a relation is transitive, symmetric, antisymmetric, reflexive, or a partial order:
If (x, x)R for all x R x x for all x R, which is false.
b. Symmetric: For all (x, y) R, if "x" and "y" are related, then "y" is also related to "x."
In this case, x y y x for all (x, y) R, which is false.
c. Antisymmetric: If "x" and "y" are related, then "x" equals "y" for all (x, y) R.
In this case, x y and y x x = y are false.
not in opposition.
c. Transitive: If "x" and "y" are related, then
For all values of x, y, and z R, 'x' is connected to 'z'.
For any x, y, and z R, x y, y z x z.
True.
Therefore, only the transitive relation for the given relation for (x, y) R if x y defined on the set of positive integers is true.
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A certain quadratic function has x-intercepts at 2 and 3. What are the x-coordinates of its vertex?
a) 5/2 because by symmetry, both x-intercepts should be the same vertical distance from the vertex point which is at x = 5/2 or 2.5.
b) 7/2 because by symmetry, both x-intercepts should be the same vertical distance from the vertex point which is at x = 7/2 or 3.5.
c) 5/2 because by symmetry, both x-intercepts should be the same horizontal distance from the axis of symmetry at x = 5/2 or 2.5.
d) 7/2 because by symmetry, both x-intercepts should be the same horizontal distance from the axis of symmetry at x = 7/2 or 3.5.
Answers
Because both of its x-intercepts should be the same horizontal distance from the axis of symmetry at x = 5/2 or 2.5 according to symmetry, the vertex's x-coordinates are 5/2.
What is coordinates?A pair of numbers that use the horizontal and vertical separations from the two reference axes to define a point's location on a coordinate plane. typically expressed by the x-value and y-value pair (x,y).
Here,
The parabola is symmetric around its vertex. This means that the roots are the same horizontal distance away from the vertex. Furthermore, we can apply the midpoint formula on the given roots to find the x coordinate of the vertex.
Find the midpoint of 2 and 3 to get
(2+3)/2 = 5/2
The x-coordinates of its vertex is 5/2 because by symmetry, both x-intercepts should be the same horizontal distance from the axis of symmetry at x = 5/2 or 2.5.
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Use the formula A=(1+r/n)^nt to solve the compound interest problem.
Find how long it takes for 900$ to double if it is invested at 6% interest compounded monthly.
The money will double in value in approximately ? years.
(Do not round until the final answer. Then round to the nearest tenth as needed.)
Answers
The total years taken to double the money according to Compounding will be 12.5 years.
What is compound interest?
Compound interest is that the interest on savings calculated on each the initial principal and therefore the accumulated interest from previous periods.
Main body:
Given :
rate = 6%
amount = $900
Total amount = $1800
Compounded monthly,
so formula becomes,
Total amount = amount (1+r/1200)^12t
T = A[tex](1+r/1200)^{12t}[/tex]
1800 = 900 (1+6/1200)^12t
2 = (1+1/200)^12t
2 = 1.005^12t
taking log on both sides
log 2 = 12t *log 1.005
0.3/0.002 = 12t
t = 12.5 years
Hence the time taken to double the money is 12.5 years.
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The measure of an angle is 128.1°. What is the measure of its supplementary angle?
Answers
Answer:
Two angles are supplementary. If the measure of the angle is twice the measure of the other, find the measure of each angle.
Let the measure of one of the supplementary angles be a
.
Measure of the other angle is 2
times a
.
So, measure of the other angle is 2a
.
If the sum of the measures of two angles is 180°
, then the angles are supplementary.
So, a+2a=180°
Simplify.
3a=180°
To isolate a
, divide both sides of the equation by 3
.
3a3=180°3 a=60°
The measure of the second angle is,
2a=2×60° =120°
So, the measures of the two supplementary angles are 60°
and 120° .
Step-by-step explanation:
Hope this works!....
12. Carly's family is going to buy cell phones for the entire family. After some research they have narrowed their choices
down to 2 companies. AT&T charges a monthly rate of $100 plus $15 for each phone on the account. Their competitor,
Sprint, charges a flat monthly fee of $200 and they will receive an unlimited number of phones on the account.
a. Write an equation for the cost of each cell phone provider and then graph the equations.
AT&T:
Sprint:
b. Use any method to determine which company would be cheaper if Carly's family consists of Carly, mom, dad, two brothers, and one sister. Explain your reasoning
Answers
a) The linear functions each cell phone provider are given as follows:
AT&T: 100 + 15x.Sprint: 200.The graph with these functions is given by the image shown at the end of the answer.
b) The cheaper companies are given as follows:
Less than 7 phones: AT&T.7 or more phones: Sprint.How to define the linear functions?The linear functions in this problem are defined in slope-intercept format as follows:
y = mx + b.
In which the coefficients and their meaning are given as follows:
m is the slope, representing the cost per phone.b is the intercept, representing the fixed cost, before considering the costs per phone.Hence the cost functions for this problem are given as follows:
AT&T: 100 + 15x.Sprint: 200.The functions intersect at x = 6.67, hence the cheaper plans are given as follows:
Less than 7 phones: AT&T. (cheaper initially due to the lower intercept).7 or more phones: Sprint. (cheaper for more phones due to the lower slope).More can be learned about linear functions at https://brainly.com/question/24808124
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find the missing number so that the equation has infinitely many solutions. 2x + _ = 2x - 4
Answers
Answer:
The missing number is -4.---------------------------------
For the equation to have infinitely many solutions, the variables and constants should cancel and should end up with 0 = 0. It means for any value of the variable the equation is true, i.e. both sides are equal.
Given equation:
2x + ? = 2x - 4If we solve it for ? we'll get:
? = - 4In triangle ABC, m∠B = (13x − 16)° and the measure of the exterior angle to ∠B is (8x − 14)°. Find m∠B.
10°
66°
49°
114°
Answers
The measure of angle B is (d) 114 degrees
How to determine the measure of angle B?From the question, we have the following parameters that can be used in our computation:
B = 13x - 16
Exterior of B = 8x - 14
As a general rule, the sum of an angle and its exterior is 180 degrees
This means that
13x - 16 + 8x - 14 = 180
Evaluate the like terms
So, we have
21x = 210
Divide both sides
x = 10
Recall that
B = 13x - 16
So, we have
B = 13 x 10 - 16
Evaluate
B = 114
Hence, the measure is 114 degrees
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Answer:
The measure of angle B is (d) 114 degrees
Step-by-step explanation:
If you form a triangle from two given angles measure and the length of the included side, will you always get one triangle or will you get more than one triangle?
Answers
You will always get one triangle. This is because of the Triangle Angle Sum Theorem, which states that the sum of the measures of the angles of a triangle is always 180°.
What is known as a triangle?A triangle is a polygon with three vertices and three sides. The angles of the triangle are formed by the connection of the three sides end to end at a point. The triangle's three angles add up to 180 degrees in total.
How do triangle angles work?The inner angles of every triangle sum up to 180°, 180°, 180°, 180°. Angles in a triangle are the total (sum) of the angles at each of its three vertices.
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A vehicle uses 1 gallons of gasoline to travel 13 miles. At this rate, how many miles can the vehicle travel per gallon of gasoline?
Answers
You may find the answer to this question in the statement of the problem, if the vehicles uses 1 gallon to travel 13 times, then it is traveling at a rate of 13 miles per gallon.
Hope this helped. If this didn’t make sense, please feel free to leave a comment.
Suppose a = 9 and b = 4.
Find an exact value or give at least two decimal places:
sin(A) =
cos(A) =
tan(A) =
sec(A) =
csc(A) =
cot(A) =
Answers
The trigonometric measures for the triangle in this problem are given as follows:
sin(A) = 0.9137.cos(A) = 0.4061tan(A) = 2.25.sec(A) = 2.4624.csc(A) = 1.0945.cot(A) = 0.4444.What are the trigonometric measures?The six trigonometric measures for a right triangle are given as follows:
Sine of angle: Length of opposite side to the angle divided by the hypotenuse.Cosine of angle: Length of adjacent side to the angle divided by the hypotenuse.Tangent of angle: Length of opposite side to the angle divided by the length of the adjacent side to the angle.Cossecant: One divided by the sine of the angle.Secant: One divided by the cosine of the angle.Cotangent: One divided by the tangent of the angle.From the given right triangle, the sides are given as follows:
a = 9, b = 4.
Then, applying the Pythagorean Theorem, the length of the sqis given as follows:
h² = 9² + 4²
h² = 97
h = square root of 97.
h = 9.85.
Missing InformationThe triangle is given by the image shown at the end of the answer.
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Jasper claims that there exists a regular polygon for which the measure of each interior angle of the polygon is four times the minimum angle of rotation about its center that carries the polygon onto itself.
For the case where Jasper's claim is true, complete the table by entering the correct information for such a regular polygon.
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It is not possible for the measure of each interior angle of a regular polygon to be four times the minimum angle of rotation about its center that carries the polygon onto itself.
What is the interior angle?
The inner of the two angles formed where two sides of a polygon come together. any of the four angles formed in the area between a pair of parallel lines when a third line cuts them.
Jasper's claim is not true. The minimum angle of rotation about the center of a regular polygon that carries the polygon onto itself is called the polygon's "order of rotational symmetry." This angle is always less than or equal to 180 degrees, and it is equal to 360 degrees divided by the number of sides in the polygon.
For example, a regular hexagon has an order of rotational symmetry of 60 degrees (360 degrees / 6 sides), and a regular octagon has an order of rotational symmetry of 45 degrees (360 degrees / 8 sides).
Therefore, if the measure of each interior angle of a regular polygon is four times the minimum angle of rotation about its center that carries the polygon onto itself, then the measure of each interior angle would have to be at least 720 degrees. However, the sum of the interior angles of a regular polygon with n sides is 180(n-2) degrees, which is always less than 720 degrees for any value of n greater than 2.
Therefore, it is not possible for the measure of each interior angle of a regular polygon to be four times the minimum angle of rotation about its center that carries the polygon onto itself.
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One side of a rectangle is 8 cm and the perimeter is 48 cm. Find the area.
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Answer: 128 square centimeters
Step-by-step explanation:
If the perimeter is 48 cm, then the sum of the lengths of any two adjacent sides must be 24 cm.
Since the length of one of these sides is given to be 8 cm, it follows the length of the corresponding adjacent side is 16 cm.
Thus, using the formula for the area of a rectangle, the area is 128 square centimeters.
How many solutions does this system of equations have? 2x+y=1 4x+2y=2 O Exactly two None O Exactly one Infinitely many
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Answer:
Infinitely many
Step-by-step explanation:
2x+y=1
4x+2y=2
Divide both sides of the second equation by 2.
2x + y = 1
This is the same as the first equations. Both equations are the same equation. Since you have only one equation and two variables, there is an infinite number of solutions.
Answer: Infinitely many