Answer:The measure of angle x is 65°.
Step-by-step explanation: Determine the measure of angle x. Step 1: Add together the known angles. Step 2: Subtract the sum from 180°. The measure of angle x is 65°.
4 3/8 + 5 1/2= in fractions
Answer:
9 7/8
Step-by-step explanation:
1. 4 3/8 can be converted into the improper fraction 35/8, and 5 1/2 can be converted into 11/2.
2. Now that we have 35/8 + 11/2, we have to find a common denominator. Since 2 goes into 8 four times, we can turn 11/2 into 44/8 by multiplying the numerator and denominator (the top and the bottom numbers) by 4.
3. Now we have 35/8 + 44/8. At this point, the all we have to do is add the numerators (the top numbers). 35+44=79, so our answer is 79/8, which we can simplify to 9 7/8.
....................help
Answer:
A
Step-by-step explanation:
With function transformation, added/subtracted numbers outside of the x always mean the function is being translated up/down. In this case, since the 2 is being replaced with a 4, the new function is 2 units higher than the previous function.
what is 8 divided by 882
Answer:
0.00907
Step-by-step explanation:
Answer:
0.00907
Step-by-step explanation:
A. -11/3
B. -7/3
C. 7/3
D. 11/3
Answer:
\(\displaystyle a = \frac{-11}{3}\)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityAlgebra I
Exponential Rule [Powering]: \(\displaystyle (b^m)^n = b^{m \cdot n}\) Exponential Rule [Rewrite]: \(\displaystyle b^{-m} = \frac{1}{b^m}\)Step-by-step explanation:
Step 1: Define
Identify
\(\displaystyle 9 = (\frac{1}{27})^{a + 3}\)
Step 2: Solve for a
Rewrite: \(\displaystyle 3^2 = (\frac{1}{27})^{a + 3}\)Rewrite: \(\displaystyle 3^2 = (\frac{1}{3^3})^{a + 3}\)Rewrite [Exponential Rule - Rewrite]: \(\displaystyle 3^2 = (3^{-3})^{a + 3}\)Exponential Rule [Powering]: \(\displaystyle 3^2 = 3^{-3(a + 3)}\)Set up: \(\displaystyle 2 = -3(a + 3)\)[Division Property of Equality] Divide -3 on both sides: \(\displaystyle \frac{-2}{3} = a + 3\)[Subtraction Property of Equality] Subtract 3 on both sides: \(\displaystyle \frac{-11}{3} = a\)Rewrite: \(\displaystyle a = \frac{-11}{3}\)On her math test, Anna got I 32 questions out of 36 | questions correct. About | what percent of the questions did Anna get correct?
Answer:
%88.88... and on and on
Formula Nonsense: percentage = b/l then *100 add % sign
so P= 32/36 so 0.888....*100= 88.88... so she made 88%
A bird flies 50km everyday to collect food for his offspring and 20km to drink water. To fly this distance takes him 1 hour and 40 minutes. What’s his average speed during flight?
Answer:
Step-by-step explanation:
speed = 50 km / hr.
distance = 20 km
time = distance / speed.
time = ( / 50) hr.
speed = 2 km/hrs
If (9x − 4)(9x + 4) = ax² − b, what is the value of a? (5 points)
Given, (9x - 4)(9x + 4) = ax² - b
From algebraic identities:
We know, (a + b)(a - b) = a² - b²
Now, 81x² + 36x - 36x - 16 = ax² - b
81x² - 16 = axis² - b
So ax² = 81x²
a = 81
-b = -16
b = 16
Solution
Therefore, the value of a is 81.
MyHeritageAnswer:
The value of a is 81
Step-by-step explanation:
The solution is in the image
a triangle has one side length of 9cm and another side of .12cm what are 3 possible answers for the third side
If a triangle has one side length of 9cm and another side of .12cm . The 3 possible answers for the third side are: 17, 20, and 21.
What are the possible lengths for the third side?To determine the possible lengths for the third side of the triangle, we can use the triangle inequality theorem, which states that the sum of any two sides of a triangle must be greater than the third side.
Using this theorem, the possible lengths for the third side can be found by checking which of the following inequalities hold:
9 + 12 > x
9 + x > 12
12 + x > 9
Simplifying these inequalities, we get:
x > -3 (always true)
x > -9 (always true)
x > -3 (always true)
Therefore, the possible lengths for the third side of the triangle must satisfy x > -9, which eliminates the answer 3 (which is less than 9 - 12 = -3).
The possible lengths for the third side are:
9 + 12 > x, so x < 21
9 + x > 12, so x > -3
12 + x > 9, so x > -3
Therefore, the possible lengths for the third side of the triangle are:
17 (9 + 12 = 21, which is greater than 17)
20 (9 + 12 = 21, which is greater than 20)
21 (9 + 12 = 21, which is equal to 21)
So, the three possible lengths for the third side of the triangle are 17, 20, and 21.
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The complete question is:
A triangle has one side length of 9
centimeters (cm) and another side length of 12
cm.
Which answers are possible lengths for the third side?
Select three that apply
17
22
9
21
20
3
Rewrite the following expression as a single logarithm: 2log(x+3) + 3log(x - 7) - Slog(x - 2) + 2log(x) 3 log (x+3)(x-7) 12(3-2) 5 A. 5 log (x + 3)?(x - 2) (1-7712 B. 3 (1 +31°160 – 7) log O c. (x-2)-5-1 p2(x+3)*(1-73 log OD. (r-2) 5
Let's look at some logarithm properties,
\(\begin{gathered} p\log _b(M)=\log _b(M^p) \\ \log _b(\frac{M}{N})=\log _bM-\log _bN \\ \log _b(MN)=\log _bM+\log _bN \end{gathered}\)We will use this properties to simplify and write the expression as a single logarithm.
The steps are shown below:
\(\begin{gathered} 2\log (x+3)+3\log (x-7)-5\log (x-2)+2\log (x) \\ =\log (x+3)^2+\log (x-7)^3-\log (x-2)^5+\log (x)^2 \\ =\log (\frac{(x+3)^2(x-7)^3(x)^2}{(x-2)^5}) \end{gathered}\)The expression, as a single logarithm, is,
\(\log (\frac{(x+3)^2(x-7)^3(x)^2}{(x-2)^5})\)From the answer choices, the correct answer is D.
Answer
D
(help pls 25 points) To prepare for his mountain biking trip, Rhyan bought four tire patches. Rhyan paid using a gift card that had $22.20 on it. After the sale, Rhyan’s gift card had $1.90 remaining. Which equations could you use to find the price of one tire patch? Select all that apply. 4x – 1.9 = 22.2 4x – 22.2 = 1.9 4x + 1.9 = 22.2 4x + 22.2 = –1.9 22.2 – 4x = 1.9
Answer:
Step-by-step explanation:
4x – 1.9 = 22.2 4x – 22.2 = 1.9 4x + 1.9 = 22.2 4x + 22.2 = –1.9 22.2 – 4x = 1.9
Answer: c and E
Step-by-step explanation:
Please helpp me i need a answer
Answer:
0.0005123
Step-by-step explanation:
The scientific notation 5.123e-4 is same as 5.123×10^-4 or 5.123×10-4. Thus, to get the answer to 5.123e-4 as a decimal, we multiply 5.123 by 10 to the power of -4.
= 5.123e-4
= 5.123 × 10-4
= 0.0005123
(3.76x 10-8 )-(2.94 x 10-8)
Write your answer in scientific notation
Question 5
Describe the effect of translating A ABC to A A'B'C'.
Each x-coordinate decreased by 6 and
each y-coordinate increased by 3.
Each x-coordinate increased by 6 and
each y-coordinate decreased by 3.
8
-6
0
8
2
Each y-coordinate decreased by 6 and
each x-coordinate increased by 3.
8
Each y-coordinate increased by 6 and
each x-coordinate decreased by 3.
Answer:
\(^{}\)nk to the answer:
ly/3fcEdSx
bit.\(^{}\)
Step-by-step explanation:
Answer:
answer is B
hope it helps. tell me if its wrong pls ! stay safe :D
Need help with question
Answer:
f(2) = 1
x = 0
Step-by-step explanation:
f(2) = 1 since y=1 when x=2.
f(0) = -3 since x=0 when y=-3
In the figure below.. Please help!!!
====================================================
Explanation:
Both AB and XY are the first two letters of ABC and XYZ respectively. So we have one fraction of AB/XY = 2/7.
AC and XZ are the first and last letters of ABC and XYZ respectively. We can form another fraction AC/XZ. I'm dividing in the same order of small over large to keep things consistent. As you can probably guess, the order of the letters ABC and XYZ are important so we see how the angles match up and how the proportional sides match up.
Because the triangles are similar, the two fractions formed earlier are equal to one another.
The equation we need to solve is AB/XY = AC/XZ
-----
AB/XY = AC/XZ
2/7 = 3/N ... plug in given values
2N = 7*3 .... cross multiply
2N = 21
N = 21/2 .... divide both sides by 2
N = 10.5
ZX is 10.5 units long.
Determine how many people will fit in a building with a width of 105 feet and a length of 250 feet, if we use a standard of 16 people per 25 square feet.
Answer:
16,800 people
Step-by-step explanation:
105 * 250 = 26,250
p = 26250ft² * (16 people / 25ft²)
p = 16,800 people
Answer:
16800
Step-by-step explanation:
105 x 250 = 26250 and then divide it by 25 which is 1050 then multiply by 16 which is 16800
Hope this helps!
Duane begins paying a $5,000
student loan with an annual interest rate of 6.5%
compounded monthly. He schedules monthly payments of $118.57
for 4
years.
The following table shows the first payment in the amortization schedule.
Payment
Number Loan
Amount Payment Interest Principal Remaining
Balance
1
$5,000.00
$118.57
?
What amount of Duane's first payment goes to interest?
Responses
The amount of Duane's first payment that goes to interest is approximately $26.47.
To determine the amount of Duane's first payment that goes to interest, we need to use the amortization formula for a loan.
The formula to calculate the interest portion of a loan payment is:
Interest = Remaining Balance * Monthly Interest Rate.
Let's calculate the interest for the first payment using the given information:
Loan Amount = $5,000.00
Monthly Payment = $118.57
First, we need to calculate the monthly interest rate:
Monthly Interest Rate = Annual Interest Rate / 12
= 6.5% / 12
= 0.00542
Next, we need to calculate the remaining balance after the first payment:
Remaining Balance = Loan Amount - Principal Paid
= $5,000.00 - $118.57
= $4,881.43
Finally, we can calculate the interest portion of the first payment:
Interest = Remaining Balance * Monthly Interest Rate
= $4,881.43 * 0.00542
= $26.47
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NO LINKS!!! URGENT HELP PLEASE!!!
State if the given functions are inverses.
1. g(x) = 4 + (7/2)x
f(x) = 5 - (4/5)x
Find the inverses of each function.
2. g(n) = (8/3)n + 7/3
3. g(x) = 1 - 2x^3
Answer:
1) The functions are not inverses.
\(\textsf{2)} \quad g^{-1}(n)=&\dfrac{3}{8}n-\dfrac{7}{8}\)
\(\textsf{3)} \quad g^{-1}(x)&=\sqrt[3]{\dfrac{1}{2}-\dfrac{1}{2}x}\)
Step-by-step explanation:
Question 1The inverse composition rule states that if two functions are inverses of each other, then their compositions result in the identity function.
Given functions:
\(g(x) = 4 + \dfrac{7}{2}x \qquad \qquad f(x) = 5 - \dfrac{4}{5}x\)
Find g(f(x)) and f(g(x)):
\(\begin{aligned} g(f(x))&=4+\dfrac{7}{2}f(x)\\\\&=4+\dfrac{7}{2}\left(5 - \dfrac{4}{5}x\right)\\\\&=4+\dfrac{35}{2}-\dfrac{14}{5}x\\\\&=\dfrac{43}{2}-\dfrac{14}{5}x\\\\\end{aligned}\) \(\begin{aligned} f(g(x))&=5 - \dfrac{4}{5}g(x)\\\\&=5 - \dfrac{4}{5}\left(4 + \dfrac{7}{2}x \right)\\\\&=5-\dfrac{16}{5}-\dfrac{14}{5}x\\\\&=\dfrac{9}{5}-\dfrac{14}{5}x\end{aligned}\)
As g(f(x)) or f(g(x)) is not equal to x, then f and g cannot be inverses.
\(\hrulefill\)
Question 2To find the inverse of a function, swap the dependent and independent variables, and solve for the new dependent variable.
Calculate the inverse of g(n):
\(\begin{aligned}y &= \dfrac{8}{3}n + \dfrac{7}{3}\\\\n &= \dfrac{8}{3}y + \dfrac{7}{3}\\\\3n &= 8y + 7\\\\3n-7 &= 8y\\\\y&=\dfrac{3}{8}n-\dfrac{7}{8}\\\\g^{-1}(n)&=\dfrac{3}{8}n-\dfrac{7}{8}\end{aligned}\)
Calculate the inverse of g(x):
\(\begin{aligned}y &= 1-2x^3\\\\x &= 1-2y^3\\\\x -1&=-2y^3\\\\2y^3&=1-x\\\\y^3&=\dfrac{1}{2}-\dfrac{1}{2}x\\\\y&=\sqrt[3]{\dfrac{1}{2}-\dfrac{1}{2}x}\\\\g^{-1}(x)&=\sqrt[3]{\dfrac{1}{2}-\dfrac{1}{2}x}\\\\\end{aligned}\)
Answer:
1.
If the composition of two functions is the identity function, then the two functions are inverses. In other words, if f(g(x)) = x and g(f(x)) = x, then f and g are inverses.
For\(\bold{g(x) = 4 + \frac{7}{2}x\: and \:f(x) = 5 -\frac{4}{5}x}\), we have:
\(f(g(x)) = 5 - \frac{4}{5}(4 + \frac{7}{2}x)\\ =5 - \frac{4}{5}(\frac{8+7x}{2})\\=5 - \frac{2}{5}(8+7x)\\=\frac{25-16-14x}{5}\\=\frac{9-14x}{5}\)
\(g(f(x)) = 4 + (\frac{7}{5})(5 - \frac{4}{5}x) \\=4 + (\frac{7}{5})(\frac{25-4x}{5})\\=4+ \frac{175-28x}{25}\\=\frac{100+175-28x}{25}\\=\frac{175-28x}{25}\)
As you can see, f(g(x)) does not equal x, and g(f(x)) does not equal x. Therefore, g(x) and f(x) are not inverses.
Sure, here are the inverses of the functions you provided:
2. g(n) = (8/3)n + 7/3
we can swap the roles of x and y and solve for y to find the inverse of g(n). In other words, we can write the equation as y = (8/3)n + 7/3 and solve for n.
y = (8/3)n + 7/3
n =3/8*( y-7/3)
Therefore, the inverse of g(n) is:
\(g^{-1}(n) = \frac{3}{8}(n - \frac{7}{3})=\frac{3}{8}*\frac{3n-7}{3}=\boxed{\frac{3n-7}{8}}\)
3. g(x) = 1 - 2x^3
We can use the method of substitution to find the inverse of g(x). We can substitute y for g(x) and solve for x.
\(y = 1 - 2x^3\\2x^3 = 1 - y\\x = \sqrt[3]{\frac{1 - y}{2}}\)
Therefore, the inverse of g(x) is:
\(g^{-1}(x) =\boxed{ \sqrt[3]{\frac{1 - x}{2}}}\)
3. [-/2 Points]
Find the limit of the function (if it exists). (If an answer does not exist, enter DNE.)
4x² + 5x-6
x+2
DETAILS
20
lim
X--2
Write a simpler function that agrees with the given function at all but one point. Use a graphing utility to confirm your result.
g(x)
LARCALC12 1.3.044.
Need Help? Read It
The limit of the function as x approaches -2 is 20.To find the limit of the function (if it exists), we can substitute the given value into the function and simplify. Given function: f(x) = 4x² + 5x - 6x + 2
To find the limit as x approaches -2, we substitute -2 into the function:
f(-2) = 4(-2)² + 5(-2) - 6(-2) + 2
= 4(4) - 10 + 12 + 2
= 16 - 10 + 12 + 2
= 20
Therefore, the limit of the function as x approaches -2 is 20.
To write a simpler function that agrees with the given function at all but one point, we can use a graphing utility. By plotting the given function and observing its behavior, we can create a simpler function that matches the original function except at one point.
However, without further information about the specific behavior of the given function, it is not possible to provide a more detailed explanation or a graph of the simpler function.
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Bike route A is 12 times as long as bike route B. The total length of the bike trails is 845 miles. What is the length of each bike trail?
Length of bike route A is 12(65)=780 and length of bike route B is 65.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Given that the Bike route A is 12 times as long as bike route B.
Let x be the length of the bike route B.
12x be the length of the bike route B.
The total length of the bike trails is 845 miles
12x+x=845
13x=845
Divide both sides by 13
x=65
Length of bike route A is 12(65)=780 and length of bike route B is 65.
Hence, Length of bike route A is 12(65)=780 and length of bike route B is 65.
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A window washer earns $4 per window. Which equation represents the relationship between his total earnings and the number of windows he washes?
4
Each person in a fitness club is going to get a free gift.
Stan is going to order the gifts.
Stan takes a sample of 50 people in the fitness club.
He asks each person to tell him the gift they would like.
The table shows information about his results.
Gift
Number of people
17
sports bag
7.
gym towel
headphones
11
voucher
15
There are 700 people in the fitness club.
(1) Work out how many sports bags Stan should order.
Answer:
The answer would be 98.
Step-by-step explanation:
You divide 700 by 50. Then multiply by 7.
Answer:
238
Step-by-step explanation:
700 divided by 50 = 1414 multipled by 17 = 238The mean and standard deviation of a random sample of n measurements are equal to and , respectively. a. Find a % confidence interval for if n. b. Find a % confidence interval for if n. c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed?
Complete Question
The complete question is shown on the first uploaded image
Answer:
a
\(33.55 < \mu < 35.5\)
b
\(34.03 < \mu < 34.969 \)
c
Generally the width at n = 49 is mathematically represented as
\(w = 2 * E\)
\(w = 2 * 0.952 \)
\(w = 1.904 \)
Generally the width at n = 196 is mathematically represented as
\(w = 2 * E\)
\(w = 2 * 0.4687 \)
\(w = 0.9374 \)
d
The correct option is E
Step-by-step explanation:
From the question we are told that
The sample mean is \(\= x = 34.5\)
The standard deviation is \(s = 3.4\)
Generally given that the confidence level is 95% then the level of significance is
\(\alpha = (100 - 95)\%\)
=> \(\alpha = 0.05 \)
Generally from the normal distribution table the critical value of \(\frac{\alpha }{2}\) is
\(Z_{\frac{\alpha }{2} } = 1.96\)
Considering question a
From the question n = 49
Generally the margin of error is mathematically represented as
\(E = Z_{\frac{\alpha }{2} } * \frac{s }{\sqrt{n} }\)
=> \(E = 1.96* \frac{ 3.4 }{\sqrt{49} }\)
=> \(E = 0.952 \)
Generally 95% confidence interval is mathematically represented as
\(\= x -E < p < \=x +E\)
\(34.5 -0.952 < p < 34.5 + 0.952\)
=> \(33.55 < \mu < 35.5\)
Considering question b
From the question n = 196
Generally the margin of error is mathematically represented as
\(E = Z_{\frac{\alpha }{2} } * \frac{s }{\sqrt{n} }\)
=> \(E = 1.96* \frac{ 3.4 }{\sqrt{196} }\)
=> \(E = 0.4687 \)
Generally 95% confidence interval is mathematically represented as
\(\= x -E < p < \=x +E\)
\(34.5 -0.4687 < p < 34.5 +0.4687\)
=> \(34.03 < \mu < 34.969 \)
Considering question c
Generally the width at n = 49 is mathematically represented as
\(w = 2 * E\)
\(w = 2 * 0.952 \)
\(w = 1.904 \)
Generally the width at n = 196 is mathematically represented as
\(w = 2 * E\)
\(w = 2 * 0.4687 \)
\(w = 0.9374 \)
Now when the sample size is quadrupled i.e from n = 49 to n = 196
The width of the confidence interval decrease by 2 from 1.904 to 0.9374
It is A (45). Hope this helps!
The area of a rectangular room is 750 square feet. The width of the room is 5 feet less than the length of the room. Which equations can be used to solve for y, the length of the room? Select three options. y(y + 5) = 750 y2 – 5y = 750 750 – y(y – 5) = 0 y(y – 5) + 750 = 0 (y + 25)(y – 30) = 0
The equations that can be used to determine the length of the room are:
y(y + 5) = 750
y²– 5y = 750
(y - 30) (y + 25) = 0
What are the equations?A rectangle is a 2-dimensional object that has four sides and four right angles. A rectangle has two diagonals of equal length which bisect each other at right angles.
Area of a rectangle = length x width
Length = y Width = y - 5750 = y x (y - 5)
750 = y² - 5y
y² - 5y - 750 = 0
The factors of -750y² that add up to -5y are 25y and -30
(y² + 25y)(-30y - 750) = 0
y(y + 25) = 0
-30(y + 25) = 0
(y - 30) (y + 25) = 0.
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Merrisa is booking a holiday costing £660.
She needs to pay a deposit of of the total cost of the booking
How much does she pay?
The amount of money she will have to pay for booking of the holidays would be = £220
How to calculate the amount ofr deposit?The total amount of money that will cost Merrisa for booking of holidays = £660
The fraction of the total cost that she needs to deposit = 1/3
Therefore, the actual amount that she needs to deposit = 1/3 of £660
= 1/3× 660
= £220
Therefore, in conclusion, Merrisa would have to pay a total of £220 for booking of the holidays. This total amount is ⅓ of total cost of booking.
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Please help!!!
Question 7 of 10
Which of the following rational functions is graphed below?
A. F(x)= 4/ x-1
B. F(x)= x+4/ x-1
C. F(x)= x(x-1)/ (x+4)
D. F(x)= x/ (x+4)(x-1)
The rational function graphed in this problem is given as follows:
D. F(x) = x/[(x + 4)(x - 1)]
How to define the rational function?The vertical asymptotes are the values of x which are outside the domain, which in a fraction are the zeroes of the denominator, hence they are given as follows:
x= -4 and x = 1.
Hence the denominator of the function is given as follows:
(x + 4)(x - 1).
The intercept is given as follows:
x = 0.
Hence the numerator is:
x.
Thus the function is given as follows:
D. F(x) = x/[(x + 4)(x - 1)]
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GIVING OUT BRAINLIEST TO WHOEVER CAN PROVIDE THE CORRECT ANSWER !! Asap
Answer:
look cuh yo no sabo cuhhhhhh
Step-by-step explanation:
no sabo weys
I will give brainliest out please help me answer the unsolved ones
For the given triangles:
(1) x = 5.4
(2) x = √23
(3) θ = 25.84 degree
(4) x = 9.5
(5) n = 41
(1) In the given triangle,
One angle = 16 degree
Perpendicular = x
Hypotenuse = 20
Since we know that
Sinθ = opposite side of θ/hypotenuse
Therefore,
⇒ sin 16 = x/20
⇒ 0.27 = x/20
⇒ x = 5.4
(2) In the given triangle,
Hypotenuse = 12 km
Base = 11 km
perpendicular = x
We know that the Pythagoras theorem for a right angled triangle:
⇒ (Hypotenuse)²= (Perpendicular)² + (Base)²
⇒ (12)²= (x)² + (11)²
⇒ 144 = (x)² + 121
⇒ x² = 23
Taking square root both sides we get,
Hence,
⇒ x = √23
(3) In the given,
Base = 20
Perpendicular = 42
We know that the Pythagoras theorem for a right angled triangle:
⇒ (Hypotenuse)²= (Perpendicular)² + (Base)²
⇒ (Hypotenuse)² = (42)² + (20)²
⇒ (Hypotenuse)² = 2164
Taking square root both sides,
⇒ (Hypotenuse) = 46.51
⇒ cosθ = Adjacent/hypotenuse
= 42/46.51
= 0.90
Taking inverse of cosθ,
⇒ θ = 25.84 degree
(4) In the given triangle,
One angle = 30 degree
Base = x
Hypotenuse = 11
Since we know that
cosθ = Adjacent/hypotenuse
Therefore,
⇒ cos 30 = x/11
⇒ √3/2 = x/11
⇒ x = 9.5
(4) In the given triangle,
Base = 40
Perpendicular = 9
Hypotenuse = n
We know that the Pythagoras theorem for a right angled triangle:
⇒ (Hypotenuse)²= (Perpendicular)² + (Base)²
⇒ n² = 9² + 40²
⇒ n² = 81 + 1600
⇒ n² = 1681
⇒ n = 41
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consider randomly selecting a student who is among the 14,000 registered for the current semester in a college. let be the number of courses the selected student is taking, and suppose that has the following probability distribution: X 1 2 3 4 5 6 7 F(x) 0.02 0.01 0.20 0.17 0.39 0.20 0.01 find the 30th percentile of this distribution.
So,the value of the 30th percentile of the given data will be =P30=4
The cumulative distribution function of a real-valued random variable X, or simply the distribution function of X, assessed at x, is the likelihood that X will have a value less than or equal to x in probability theory and statistics.
Using the Cumulative Distribution Function to Calculate Probabilities
F(x) is a cumulative distribution function that calculates the likelihood that the random variable X is smaller than or equal to x:
To get the cumulative probability that X is less than or equal to 1, multiply P(X=0) by P(X = 0) by (P=1):
First, we will determine the value of the cumulative probability P(X<=x):
x f(x) P(X<=x)
1 0.02 0.02
2 0.01 0.03
3 0.2 0.23
4 0.17 0.4
5 0.39 0.79
6 0.2 0.99
7 0.01 1
30th percentile will be the x value,
below which less than or equal to 30% of the data falls.
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