Need help will give brainliest and 5 stars for quick answers! I have 20 minutes to do this!
Answers
Answer:
Step-by-step explanation:
(n-2) x 180 = 1260
n-2 = 1260/180
n-2 = 7
n = 9
Therefore, the regular polygon has 9 sides.
Related Questions
Find P(A')) if P(A) =0.64
Answers
If P(A) is 0.64, then P(A') is 0.36. P(A) is probability of occurrence of event A.
This question pertains to Probability principles. Probability is a measure of the possibility of an event occurring. Many occurrences cannot be foreseen with absolute accuracy. We can only anticipate the likelihood of an event occurring using it.
A is an occurrence in this context. A' denotes the event's complement.
For example, if Event A is getting heads on a coin toss, then Event A' is getting tails.
This demonstrates one thing:
A ∪ A' = U, here U is the universal set.
P ( U) = 1
P (A) + P(A') = 1
0.64 + P (A') = 1
P(A') = 1 - 0.64
P (A') = 0.36
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find an equation of a parabola with a vertex at the origin and directrix y=-1.5.
x=-1/6y^2
x=1/6y^2
y=-1/6x^2
y=1/6x^2
Answers
Step-by-step explanation:
We know that the vertex of the parabola is at the origin, so the equation must have the form:
y = a x^2
where a is a constant.
We also know that the directrix is y = -1.5, which means that the focus is located at (0, 1.5).
Using the formula for the distance between a point (x, y) and a line ax + by + c = 0, which is given by:
d = |ax + by + c| / sqrt(a^2 + b^2)
we can find the value of a. The distance from the vertex (0, 0) to the directrix y = -1.5 is equal to the distance from the vertex to the focus (0, 1.5), so we have:
d = |y - (-1.5)| / sqrt(1^2 + 0^2) = sqrt(x^2 + (y - 1.5)^2) / sqrt(0^2 + 1^2)
Simplifying this equation, we get:
sqrt(x^2 + (y - 1.5)^2) = |y + 1.5|
Squaring both sides, we get:
x^2 + (y - 1.5)^2 = (y + 1.5)^2
Expanding and simplifying, we get:
x^2 = 3y
So the equation of the parabola with vertex at the origin and directrix y = -1.5 is:
y = (1/3)x^2
Therefore, the correct answer is: y = (1/3)x^2.
4. A spinner is divided into four colored sections. that are not of equal size: red blue purple and orange. The arrow on the spinner is spun several times. SPINNER RESULTS Color Number of Times Red 15 Blue 24 Purple Orange 12 B. 9 The arrow on the spinner will be spun one more time. Based on these results, what is the probability that the arrow will land on the purple section? C. 27 D. 1/2
Answers
15 + 24 + 12 + 9 = 60 times
Out of these 60 spins, we know that the arrow landed on the purple section 9 times. Therefore, the probability of the arrow landing on the purple section can be calculated as:
P(purple) = number of times the arrow landed on purple / total number of spins
= 9 / 60
= 3 / 20
Therefore, the probability of the arrow landing on the purple section is 3/20. Answer: B.
which radian measure is equivalent to 300°?
• 5/3
• 11pi/6
• 5pi/6
• 5pi/3
Answers
The radian measure that is equivalent to 300° is equal to 5π/3. So, correct option is D.
To convert degrees to radians, we use the conversion factor of π/180, which means that one degree is equal to π/180 radians. Therefore, to convert 300° to radians, we multiply 300 by π/180:
300° * π/180 = 5π/3
To understand this conversion, we need to remember that radians are a unit of measurement for angles, just like degrees. However, while degrees divide a circle into 360 equal parts, radians divide a circle into 2π equal parts. One full rotation is equal to 2π radians, which is also equal to 360°.
Since 5π/3 radians is less than one full rotation, it represents an angle that is less than 360°. In fact, 5π/3 radians is equivalent to 300°, which is a well-known angle used in many contexts, such as in geometry, trigonometry, and physics.
In summary, to convert 300° to radians, we multiply it by the conversion factor π/180, which gives us the equivalent angle measure of 5π/3 radians.
So, correct option is D.
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pls help me with this
Answers
The expression of the perimeter of the triangle is 15h - 6k + 12m.
How to find the perimeter of a triangle?A triangle is a polygon with three sides. The sum of angles in a triangle is 180 degrees.
The perimeter of a triangle is the sum of the whole three sides of the triangle.
Therefore, let's find the perimeter of the triangle with side length (5h - 4k), (10h + 7m) and (5m - 2k).
Therefore,
perimeter of a triangle = 5h - 4k + 10h + 7m + 5m - 2k
collect like terms
perimeter of a triangle = 5h + 10h - 4k - 2k + 7m + 5m
Therefore,
perimeter of a triangle = 15h - 6k + 12m
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Does anyone know this answer??
Answers
Step-by-step explanation:
This question uses trigonometry, a subject you may have learnt. Using the functions sin, cos, tan and the abbreviation SOHCAHTOA, you'll need to use sin to find your answer.
sin = opposite/hypotenuse
sin 25 = 112/d
d = 112/sin 25
d = 238.5661004
Answer: 238.6 metres
what is the ss total if ss is between 164 and within 70.2
Answers
The value of ss total while ss between is 164 and ss within is 70.2 is given by 234.2.
We know that the sum of square in total is equal to the sum of sum of square in between and sum of squares within.
In mathematical word, ss (total) = ss (between) + ss (within)
Here given that the ss (between) is given by = 164
and ss (within) is given by = 70.2
So the ss(total) is given by,
ss(total) = ss(between) + ss(within) = 164 + 70.2 = 234.2.
Hence the required value of ss total is 234.2.
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Calculate the area of the shaded region for the given figure.
Answers
The area of the shaded region of the given figure would be = 47.1.
How to calculate the area of the shaded figure?To calculate the area of the shaded figure, the formula of the area of a sector of a circle is used such as;
area of sector = ∅/360πr²
∅ = 40°
r = 12
area = 40/360 × 3.14× 12×12
= 18086.4/360
= 50.24
Area of the unshaded portion
radius = 12-9 = 3
area = 40/360×3.14×3×3
= 1130.4/360
= 3.14
Therefore area of the shaded portion;
= 50.24- 3.14
= 47.1
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Find the equation of a line parallel to −5x+y=−4that passes through the point (−7,−9).
Answers
The equation of the line is parallel to -5x+y=-4 and passes through the point (−7,−9) is y=5x+26.
Given that, the equation of the line is parallel to -5x+y=-4 and passes through the point (−7,−9).
The given equation can be written as y=5x-4.
Now, compare y=5x-4 with y=mx+c, we m=5
The slope of a line parallel to given line is m1=m2
So, the slope of the line parallel to the given line is 5.
Now, substitute m=5 and (x, y)=(-7, -9) in y=mx+c, we get
-9=5(-7)+c
c=-9+35
c=26
So, the equation is y=5x+26
Therefore, the equation of the line is parallel to -5x+y=-4 and passes through the point (−7,−9) is y=5x+26.
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* Required Problem Set 1 A swimming pool has 150 gallons of water in it. It fills up at a constant rate of 30 gallons every 2 hours. The initial value is 30 gallons every 2 hours * O True O False
Answers
False. The initial value is 0 gallons every 2 hours because the pool already has 150 gallons of water in it.
In a survey conducted by a website, employers were asked if they had ever sent an employee home because they were dressed inappropriately. A total of 2765 employers responded to the survey, with 964 saying that they had sent an employee home for inappropriate attire. In a press release, the website makes the claim that more than one-third of employers have sent an employee home to change clothes.
A button hyperlink to the SALT program that reads: Use SALT.
Do the sample data provide convincing evidence in support of this claim? Test the relevant hypotheses using
= 0.05.
For purposes of this exercise, assume that it is reasonable to regard the sample as representative of employers in the United States. (Round your test statistic to two decimal places and your P-value to four decimal places.)
z =
P-value =
Answers
Using the sample data, the proportion of employers who have sent an employee home for inappropriate attire is:
p-hat = 964/2765 = 0.3493
The sample size is sufficiently large (n = 2765) to assume that the sampling distribution of p-hat is approximately normal.
The test statistic is:
z = (p-hat - p0) / sqrt(p0*(1-p0)/n) = (0.3493 - 1/3) / sqrt((1/3)*(2/3)/2765) = 2.58
Using a one-sided test with a significance level of 0.05, the critical value is 1.645. Since the test statistic (z = 2.58) is greater than the critical value (1.645), we reject the null hypothesis and conclude that there is evidence to support the claim that more than one-third of employers have sent an employee home for inappropriate attire.
The P-value for the test is P(Z > 2.58) = 0.0049. This means that the probability of observing a sample proportion of 0.3493 or more extreme, assuming the null hypothesis is true, is 0.0049. Since this P-value is less than the significance level of 0.05, we reject the null hypothesis and conclude that there is evidence to support the claim that more than one-third of employers have sent an employee home for inappropriate attire.
9) Find the 10th term in the
sequence.
9) 2, 4, 12, 48, 240, ...
A) a
5828046
a 10
B) a = 3765310
10
C) a = 4678865
10
D) a = 7257600
10
Answers
The 10th term of the sequence is 7,257,600. Option D.
Arithmetic sequenceTo find the 10th term in the sequence, we can use the pattern to generate the next terms:
The first term is 2.
To get the second term, we multiply the first term by 2: 2 × 2 = 4.To get the third term, we multiply the second term by 3: 4 × 3 = 12.To get the fourth term, we multiply the third term by 4: 12 × 4 = 48.To get the fifth term, we multiply the fourth term by 5: 48 × 5 = 240.Therefore, to get the 10th term, we can multiply the fifth term by 6, then by 7, then by 8, and then by 9:
5th term = 2406th term = 240 × 6 = 14407th term = 1440 × 7 = 100808th term = 10080 × 8 = 806409th term = 80640 × 9 = 72576010th term = 725760 × 10 = 7257600Therefore, the 10th term in the sequence is 7,257,600.
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Mary is traveling cross country on a road trip. So far, Mary has traveled 200 miles in her car and 200 miles by train. The car traveled at a rate that was 30 miles per hour slower than the train.
Mary modeled the total time for her trip with the following expression.
What does x - 30 represent in this situation?
Answers
Answer:
The answer to your problem is, x-30 is speed of the car.
Step-by-step explanation:
Let the object is moving n miles in one hour.
Let the speed is m miles per hour.
We know that our friend Mary has traveled 200 miles in her car and 200 miles by train. And shown Mary also modeled the total time for her trip;
[tex]\frac{200}{x}[/tex] + [tex]\frac{200}{x-30}[/tex]
The car that was given had traveled at a rate that was 30 miles per hour slower than the train.
speed of the train is x miles per hour
speed of the car = x - 30 miles per hour.
Thus the answer to your problem is, x-30 is speed of the car.
What is the decimal equivalent of 7/12? A. 0.583 B. 0.58 C. 0.583 D. 5.83
who ever answers the question right i will make them a brainlest
Answers
Answer:
c
Step-by-step explanation:
I hope it help :)
Michelle has four credit cards with the balances and interest rates listed below. She would like to consolidate all of her credit cards in a single credit card with an interest rate of 16% and pay off the balance in 36 months. If she did so, what would Michelle’s monthly credit card payment be?
Credit Card
Balance
APR
#1
$4,380
17%
#2
$1,365
19%
#3
$2,480
23%
#4
$5,000
15%
a.
$367.36
b.
$464.95
c.
$685.23
d.
$826.56
Answers
Answer:
mark me brilliant
Step-by-step explanation:
To calculate Michelle’s monthly credit card payment, we need to find the total amount she owes and then divide it by the number of months she has to pay it off.
First, we need to find the total balance on Michelle’s credit cards:
$4,380 + $1,365 + $2,480 + $5,000 = $13,225
Next, we need to find the weighted average interest rate of her credit cards. To do this, we multiply each balance by its corresponding APR and add up the results. Then we divide by the total balance:
($4,380 x 0.17) + ($1,365 x 0.19) + ($2,480 x 0.23) + ($5,000 x 0.15) = $1,038.55
$1,038.55 ÷ $13,225 = 0.0785, or 7.85%
Now we can use the total balance and the weighted average interest rate to calculate Michelle’s monthly payment using the formula for a fixed payment on a loan:
P = (r(PV)) / (1 - (1 + r)^-n)
Where:
P = monthly payment
r = monthly interest rate (as a decimal)
PV = present value of the loan
n = number of payments
r = 0.16 ÷ 12 = 0.01333 (monthly interest rate)
PV = $13,225
n = 36
P = (0.01333(13,225)) / (1 - (1 + 0.01333)^-36) = $367.36
Therefore, Michelle’s monthly credit card payment would be $367.36 if she consolidated all of her credit card debt into a single credit card with an interest rate of 16% and paid it off in 36 months. The answer is (a) $367.36.
What is the distance between the coordinates (2, 9) and (10, 6)? Round your
answer to the nearest tenth.
Answer here
<>
SUBM
Answers
Answer:
8.54
Step-by-step explanation:
√(6-9)²+(10-2)2
=√(-3)²+8²
=√9+64
=√73=8.54
The answer is 8.54
Can anyone tell me this worksheet and how to do it? Btw whenever I divide, I will have to turn it into a fraction and if the fraction isn’t simplified I will have to simplify it to a good looking fraction. Example: 0.75/1.25 would be 3/5in, scale drawing goes on top, actual goes on bottom. Remember you have to do proportional set up. it’s like that.
Answers
The scale factor of the given images above is as follows:
1.) 5/3
2.) 7/10
3.) 7/3
4.) 3/2
How to determine the scale factors of the given images?For image 1.), the image was scaled down.
scale factor = original image dimensions/scale drawing
= 1.25/0.75
proportional set up = 125/75 = 5/3
For image 2.) the image was scaled up.
scale factor = Bigger dimensions/smaller dimensions
= 3.5/2
proportional set up = 35/20 = 7/10
For image 3.) the image was scaled down.
scale factor = original image dimensions/scale drawing
= 1.75/0.75
proportional set up = 175/75 = 7/3
For image 4.) the image was scaled up.
scale factor = Bigger dimensions/smaller dimensions
= 6/4 = 3/2
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The equation y = 400x represents the relationship between x, the time that a plane flies in hours, and y, the distance the plane flies in miles for Plane A. The table represents the relationship for Plane B. Find the slope of the graph for each plane and the plane's rate of speed. Determine which plane is flying at a faster rate of speed.
Answers
The slope of line is 400 and plane A's rate of speed is 400 mi/h
The slope of line is 475 and plane B's rate of speed is 475 mi/h
Therefore, Plane B is flying faster.
For Plane A the equation y = 400x represents the relationship between x, the time that a plane flies in hours, and y, the distance the plane flies in miles.
We know the equation of line is y =mx + c
m = slope of line
So, on comparing slope of line is 400 and plane A's rate of speed is 400 mi/h
For Plane B
We know the formula for slope = (y₂-y1)/(x₂ - x₁)
= (950 - 475)/(2 - 1)
= 475
So, slope of line is 475 and plane B's rate of speed is 475 mi/h
Therefore, Plane B is flying faster.
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For questions 23, use a Venn diagram or truth table or common form of an argument to decide whether each argument is valid or invalid.
23. If a person is on this reality show, they must be self-absorbed. Laura is not self-absorbed. Therefore, Laura cannot be on this reality show.
Answers
In the Venn diagram , the statement is Valid.
What is Venn diagram?
Venn diagrams are frequently used in mathematics, statistics, logic, teaching, linguistics, computer science, and business. They are also known as Set diagrams or Logic diagrams.
Here according to the Venn diagram , if person is on the reality show , they must be self absorbed. But Laure is not self absorbed so she cannot be on the reality show.
Hence the statement is valid.
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Represent "the product of 3 and a number" algebraically Use n to represent "a number". DO NOT USE ANY SPACES! Use only +,-,*,/ for operation symbols
Answers
Answer:
The product of 3 and a number can be represented as:
[tex]3n[/tex]
Calculate the area of the red triangle to find the area of the garden. Show your work. (2 points)
Answers
Using a metric standard of 2 meters, then the area of the red triangle would be 54m². The area of the garden would be; 500m²
Using typical walkway widths to 6 ft, to calculate the area the red triangle to be 486 square feet and the area of the garden to be about 4400 square feet, rounding up.
Then it is a right triangle and side a is the altitude or height of the triangle and side b is the base.
The measurements of the triangle are approximately in the proportion of 3, 4, 5, a typical "Pythagorean Triple" right triangle.
Estimating from rough measurements of the triangle and the dimensions of the garden as shown, the area of the garden is about 18 times the area of the red triangle.
The area of the triangle is half the area of a rectangle with the same side lengths a & b, therefore, 9 ab is a good estimate of the area of the garden.
Area of the triangle estimate:
A = 36ft × 27ft /2
A = 486 square feet
To estimate 2 meter wide sidewalk, the area of the triangle can be reasonably calculated to be;
A = 9m × 12m /2 = 54 m²
The area of the garden = 9 × 54 = 486m²
Then rounded reasonably to 500m²
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The number of students earning master's degrees in mathe
g(x) = 7x² -226x + 4941, where x represents the number o
mathematics or statistics in that country in 2009.
Answers
The number of students earning master’s degrees in mathematics or statistics in the country in 2009 was 4474.
We are given that;
g(x) = 7x² -226x + 4941
Now,
To find the number of students in 2009, we need to plug in x = 9 into the function g(x), since 2009 is 9 years after 2000.
g(9) = 7(9)² -226(9) + 4941
g(9) = 7(81) -2034 + 4941
g(9) = 567 -2034 + 4941
g(9) = 4474
Therefore, according to the function g(x) the answer will be 4474.
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2. If you know the correlation coefficient between two tests is +.79, you expect a person who gets a
high score on one of the tests to get a _____score on the other test.
Answers
Answer:
"high" should go in the blank. A correlation coefficient of .79 indicates a pretty strong positive correlation.
A pack of 12 pens cost $3.25 what is the cost of one pen
Answers
Therefore, using simple division, the price of one pen is calculated to be around $0.27.
Describe Division.In mathematics, division is the process of dividing an integer into equal pieces or groups. It performs multiplication in the other direction. To obtain the quotient or outcome in division, an even number has been divided by another integer, known as the divisor.
We must divide the total expense of the 12-pen pack by the quantity of pens in the box in order to figure out the price of one pen:
Price of one pen is equal to the sum of the pack's pen costs divided by the number of markers in the pack.
In this instance, we may substitute these values as we are aware that the set of 12 pens costs $3.25.
In this instance, we may enter the following values into the calculation as we are aware that the set of 12 markers costs $3.25:
One pen costs $3.25 divided by 12
Long division or using a calculator, we obtain:
One pen costs $0.27.
Consequently, the price of a pen is roughly $0.27.
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The table represents a quadratic function C(t).
t C(t)
−2 1
−1 4
0 5
1 4
2 1
What is the equation of C(t)?
C(t) = −(x − 5)2
C(t) = (x − 5)2
C(t) = −x2 + 5
C(t) = x2 + 5
g(x) = (x − 4)2 − 3
g(x) = (x − 4)2 + 3
g(x) = (x + 4)2 − 3
g(x) = (x + 4)2 + 3
Answers
From the given table, the equation of C(t) is - t² + 5. that is option C
How to determine the equation of the parabola?The standard form is (x - h)² = 4p (y - k), where the focus is (h, k + p) and the directrix is y = k - p.
Let the point (h, k) be the vertex of the parabola and a be the leading coefficient.
Then the equation of the parabola will be given as,
y = a(x - h)² + k
The table represents a quadratic function C(t).
t C(t)
−2 1
−1 4
0 5
1 4
2 1
From the table, the coordinate of the vertex will be at (0, 5). Then the equation is given as,
C(t) = a(t - 0)² + 5
C(t) = at² + 5
The equation is passing through the point (1, 4), then we have
4 = a (1²) + 5
4 = a + 5
a = - 1
The equation that presents the table will be C(t) = - t² + 5. Then the correct option is C.
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matt had 4/6 bag of peanuts. He ate a quarter of what was in the bag. How much of a full bag of peanuts did Matt eat?
Answers
Matt ate 1/6 of the bag of peanut
How to calculate the amount of peanut that matt ate?
Matt had 4/6 bag of peanut
He ate a quarter of what was in the bag
The amount of peanut he ate can be calculated as follows
= 4/6 × 1/4
= 4/24
= 1/6
Hence Matt ate 1/6 of the bag of peanut
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Determine the interval(s) for which the function shown below is increasing.
Answers
Answer:
Step-by-step explanation:
When x≥2 the function is increasing. you read the graph from left to right
Can also be written [-2, +∞)
Find the value of x.
a. 53°
b. 72°
c. 48°
d. 39°
Answers
Answer:
Step-by-step explanation:
yes it is b
2c – 4 = 3(4 – 2c) c = –4a + 9 = –2(4 + 5a) – 7 a =
Answers
Answer:
c=7/2, a = 5/34
Step-by-step explanation:
answerrrrrrrrrrr teh questionnnnnnnn
Answers
The linear function with a slope of 1/2 and passing through the point (4, -2) is given as follows:
y = x/2 - 4.
How to define a linear function?The slope-intercept representation of a linear function is given by the equation shown as follows:
y = mx + b
The coefficients m and b have the meaning presented as follows:
m is the slope of the function, representing the increase/decrease in the output variable y when the input variable x is increased by one.b is the y-intercept of the function, representing the numeric value of the function when the input variable x has a value of 0. On a graph, it is the value of y when the graph of the function crosses or touches the y-axis.The gradient of the function is given as follows:
m = 1/2.
Hence:
y = x/2 + b.
When x = 4, y = -2, hence the intercept b is obtained as follows:
-2 = 4/2 + b
2 + b = -2
b = -4.
Hence the equation is:
y = x/2 - 4.
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