Answer:
This will decrease the margin of error associated with your 90% confidence interval.
Step-by-step explanation:
Margin of error:
The margin of error of a confidence interval is given by a formula that follows the following format:
[tex]M = z\frac{s}{\sqrt{n}}[/tex]
In which z is related to the confidence level, s is related to the standard deviation and n is related to the size of sample.
From the formula:
M and n are inversely proportional, which means that if the sample size is increased, the margin of error decreases.
In this question:
Sample size increases from 5 to 10, so the margin of error decreases.
Simply please hurry!! Thank you also please ignore my answer I had to click something
9514 1404 393
Answer:
(b) 3h^-8·k^10
Step-by-step explanation:
The applicable rule of exponents is ...
(a^b)/(a^c) = a^(b-c)
__
[tex]\dfrac{15h^{-4}k^{15}}{5h^4k^5}=\dfrac{15}{5}h^{-4-4}k^{15-5}=\boxed{3h^{-8}k^{10}}[/tex]
Let D be the ordered set of all possible words (not just English words, all strings of letters of arbitrary length) using the Latin alphabet using only lower case letters. The order is the lexicographic order as in a dictionary (e.g. aaa < dog < door). Let A be the subset of D containing the words whose first letter is 'a' (e.g. a A, abcd ∈ A). Show that A has a supremum and find what it is.
Answer:
To show that A has a supremum is given as,
Step-by-step explanation:
Because A is that the set of all letters from the dictionary starting with the letter 'a'. And as after set A, there'll be a group containing all the opposite words .. so there exists some x during a such every other letter during a comes before it. So it's none aside from a word starting with the letter b therefore the supremum of the set A is letter b.
A bag contains 6 black, 4 blue, and 8 white marbles. What is the probability that a marble drawn from the bag will be white?
a.1/18
b.2/5
c.4/9
d.4/5
Answer:
C.4/9
Step-by-step explanation:
You add the black marbles, blue marbles, and the white marbles together, which equal 18. Out of the 18 marbles, 8 of them are white so it would be 8/18.
but you have to simplify it. 8 and 18 have 2 as the greatest common factor. 8 divided by 2 is 4 and 18 divided by 2 is 9. Finally its 4/9 since you cant simplify it even more.
The question is attached at the bottom. PLEASE HELP with detailed explanation!!!
PLEASE HELP WILL MARK BRANIEST
Answer:
1.14male studying biology
What is the solution to the inequality x(x – 3) > 0?
Answer:
The solution to the inequality is [tex](-\infty, 0) \cup (3, \infty)[/tex]
Step-by-step explanation:
We have a product, which is positive if both terms is positive or if both is negative.
Both positive:
[tex]x > 0[/tex]
[tex]x - 3 > 0 \rightarrow x > 3[/tex]
Then the intersection of these two is: [tex]x > 3[/tex]
Both negative:
[tex]x < 0[/tex]
[tex]x - 3 < 0 \rightarrow x < 3[/tex]
Then the intersection of those two is: [tex]x < 0[/tex]
Then:
Union of two solutions:
[tex]x < 0[/tex] or [tex]x > 3[/tex]
Then
[tex](-\infty, 0) \cup (3, \infty)[/tex]
TASKI
END OF THE YEAR - ESCAPE ROOM
Movie Theme
Fnd the area and circumference of each figure below. Use 31 for it. If needed,
round your answers to the nearest hundredths place
CODE Type the numeral answer. NO LABELS Part a crea, circumference, part b
area, circumference For example 765, 326, 2004, 3563
6
10 mm
MOVIE
TICKET
Your answer
Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error ErrorError Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error Error
cho tứ giác lồi ABCD và điểm S không thuộc mặt phẳng(ABCD). có bao nhiêu mặt phẳng qua S và hai trong số bốn điểmA B C D
Step-by-step explanation:
Có 7 mặt phẳng
5 mặt phẳng của hình chóp S.ABCD và (SAC), (SBD)
Cậu nên hỏi trên mấy web Việt Nam thì hơn tại đa số mấy người ở đây toàn nước ngoài ạ
Which values of a, b, and c represent the answer in simplest form?
9/11 divided by 5/11 = a b/c
Answer:
a=1, b=9 and c= 5
Step-by-step explanation:
9/11 divided by 5/11
= 9/11 * 11/5
11 gets cancelled
=9/5
it can also be written as 1* 9/5
Hence here a=1, b=9 and c= 5
Please mark me as brainliest.
Russian Walks to school Every day. Which one of the following is the best describe how long time russian takes to walk to school?
1) Inches
2)Minutes
3) Centimeter
4)Meters
Answer:
Minutes answer B
hope it helps
Answer:
option 2. Minutes
Step-by-step explanation:
The question is how long time the Russian takes.
Except option 2 , the rest of the measurements are for distance/ length.
when is better to use the unit circle vs. right triangles vs. trigonometric identities? Give an example of each and explain why.
The unit circle is best suited for dealing with angles and trigonometric functions of multiple angles, right triangles are best for finding the lengths of the sides of triangles with a right angle, and trigonometric identities are best for simplifying or manipulating trigonometric expressions.
Understanding when to use Unit circle, right triangles and trigonometryEach tool has its own strengths and weaknesses and is better suited for certain types of problems.
Unit Circle is a powerful tool used to relate angles to trigonometric functions. It is particularly useful when dealing with angles in radians, as it allows for easy conversion between radians and degrees. The unit circle is also useful when dealing with trigonometric functions of multiple angles, such as sine and cosine of the sum or difference of two angles.
A good example will be if we want to find the exact value of sin(π/6), we can use the unit circle to visualize the angle π/6, which corresponds to 30 degrees. The unit circle tells us that at this angle, sin(π/6) = 1/2.
Right triangles are useful when we have a right angle in the triangle, as they allow us to use the Pythagorean theorem and trigonometric ratios to find the lengths of the sides of the triangle. Right triangles are particularly useful when we know one angle and one side length, as we can use trigonometric ratios such as sine, cosine, and tangent to find the lengths of the other sides.
If we have a right triangle with an angle of 30 degrees and a hypotenuse of 2, we can use the sine ratio to find the length of the opposite side. sin(30) = opposite/hypotenuse, so opposite = sin(30) * 2 = 1.
Trigonometric identities are useful when we want to simplify or manipulate trigonometric expressions. These identities are derived from the definitions of the trigonometric functions and can be used to simplify complex expressions or prove trigonometric identities.
For example, we can use the identity:
sin²(x) + cos²(x) = 1
to simplify the expression
sin²(x) - cos²(x).
We can rewrite this expression as:
sin²(x) - cos²(x) = sin²(x) + (-1)*cos²(x)
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i need help plz help me
Answer:
a+2b
Step-by-step explanation:
2(a+2b)-a-2b
2a+4b-a-2b
=a+2b
Answer:
Step-by-step explana:2 ( a+ 2b) - a- 2b
=2a + 4b - a - 2b= a + 2b
3. What shape is a prism?
Answer:rectangular
Step-by-step explanation:
Answer:
TRIANGULAR
Step-by-step explanation:
A prism is a triangular-shaped piece of glass. The white light that reaches the prism contains all of the colors of the visible spectrum even though you can’t see them. As the white light passes through the edge or boundary of the prism, the light waves refract. Each of the different wavelengths contained in the white light refracts differently and results in a different color. The white light is broken up by the prism into all the colors of rainbow. The longest wavelength bends (refracts) the least and is red. The shortest wavelength bends the most and is violet.
Question 12 of 27 Which of the following can be used to find the sum of the interior angles for any regular polygon?
A. Multiply the number of sides by 180
B. Divide the number of sides by 180
C. Subtract 2 from the number of sides and multiply the difference by 180
D. Add 1 to the number of sides and multiply the sum by 180
Answer:
C. Subtract 2 from the number of sides and multiply the difference by 180
Step-by-step explanation:
A regular polygon is a flat shape whose sides are all equal and whose angles are all equal. The formula for finding the sum of the measure of the interior angles is (n - 2) * 180.
A plane Airport on Tuesday morning for a 755-mile,6- hour trip. For the first part of the tripthe average speed was 105 mphFor the remainder of the trip the average speed was 130 mph . How long did the plane fly at each speed ?
Answer:
105 miles / hour for 1 hour
130 miles / hour for 5 hours
Step-by-step explanation:
Part A
speed = 105 mphdistance = xtime = yPart B
speed = 130 mphdistance = 755 miles - xtime = 6 hr - yplane Part A: x = 105 *y
Plane Part B: 755 - x = 130*(6 - y)
Put 105*y into the equation for plane B
755 - 105*y = 130*(6- y) Remove brackets on the the right.
755 - 105y = 780 - 130y Add 130y to both sides
755 - 105y + 130y = 780 Combine left
755 + 25y = 780 Subtract 755 from both sides
25y = 780 - 755
25y = 25 Divide by 25
y = 25/25
y = 1
The plane travelled 1 hour at 105 mile / hour
The plane travelled 5 hour at 130 mile / hour
Check
1 hour for a distance of 1 hr * 105 mph = 105 mile
5 hour for a distance of 5 hr*130 mph = 650 miles
Total distance = 755 miles
Remark
This is a very neat problem. I don't think I've ever seen this variation. It is a little long, but it is well worth your time.
The main hall of Grand Central Station in New York City is approximately 210,000 square feet.
(a) Estimate how many people could stand with enough room to turn around in the main hall of the station if there were an emergency which required that the station be used to shelter people.
(b) Explain how you came up with your estimate.
(c) If there are 4 million people in Manhattan, NY, on a typical workday, estimate the percentage of them that could be sheltered in the station.
(d) Explain how you came up with your estimate.
Answer:
a)
52,500 persons
b)
Assuming that a single person occupies 4 square feet of space.
Use the following formula to calculate the Numbers o person occupies the Grand Central Station in New York City
Numbers of person occupies the Grand Central Station in New York City = Total Space of Grand Central Station in New York City / Space occupied by each person
Where
Total Space of Grand Central Station in New York City = 210,000 square feet
Space occupied by each person = 4 squaure feet
Placing values in the formula
Numbers of person occupies the Grand Central Station in New York City = 210,000 square feet / 4 square feet per person
Numbers of person occupies the Grand Central Station in New York City = 52,500 persons
c)
1.3125%
d)
Use the following formula to calculate the percentage of people that could be sheltered in the station
Percentage of people shelter in the station = ( Numbers of person occupies the Grand Central Station in New York City / Total population in Manhattan ) x 100
Where
Numbers of person occupies the Grand Central Station in New York City = 52,500 persons
Total population in Manhattan = 4,000,000 persons
Placing values in the formula
Percentage of people shelter in the station = ( 52,500 / 4,000,000 ) x 100 = 0.013125 = 1.3125%
The number of persons will be "105,000 persons" and the percentage of 4 million that could be sheltered in the station will be "2.625%".
Given:
Total area,
A = 210,000 square feetTotal persons,
[tex]N_t[/tex] = 4 million(a)
→ [tex]Number \ of \ persons (N) = \frac{A}{Area \ covered \ by \ one \ person}[/tex]
By substituting the values, we get
[tex]= \frac{210000}{2}[/tex]
[tex]= 105000 \ per \ share[/tex]
(b)
This approximation comes from dividing a large or overall area by something like a portion of one individual.
(c)
→ [tex]Percentage \ share = \frac{N}{N_t}\times 100[/tex]
By substituting the values, we get
[tex]= \frac{10500000}{4\times 10^6}[/tex]
[tex]= 2.625[/tex] (%)
(d)
Using the method above that, the proportion of people throughout the living room will be calculated.
Thus the above response in appropriate.
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in what ratio of line x-y-2=0 divides the line segment joining (3,-1)and (8,9)
Answer:
The ratio in which the line x-y-2=0 divides the line joining A(3,-1) and B(8,9) is in the ratio 2:3
Step-by-step explanation:
Let (x, y) be the coordinates of point of intersection.
Hence x=(a*8+1*3)(a+1) = (8a+3)/(a+1)
and
y = {a*9+1*(-1)}/(a+1)=(9a-1)/(a+1)
Since this point lies on the line x-y-2=0
Hence (8a+3)/(a+1)-(9a-1)/(a+1)-2=0
i.e. 8a+3–9a+1–2(a+1)=0
Or 8a+3–9a+1–2a-2=0
i.e.-3a+2=0
Hence a=2/3
hence the ratio in which the line x-y-2=0 divides the line joining A(3,-1) and B(8,9) in the ratio 2/3:1
i.e. 2:3
In the data set shown below, what is the value of the quartiles? {42, 43, 44, 44, 48, 49, 50} A. Q1 = 43.5; Q2 = 44; Q3 = 49 B. Q1 = 43; Q2 = 44; Q3 = 48.5 C. Q1 = 43.5; Q2 = 44; Q3 = 48.5 D. Q1 = 43; Q2 = 44; Q3 = 49
Answer:
C
Step-by-step explanation:
I don't actually know how to explain it but,
Q1=43.5
Q2=44
Q3=48.5
Sorry, I can't help more.
Answer:
C is your answer
Step-by-step explanation:
ick the correct alternatives.
If A is a subset of U, which one of the following relation is always true?
(A) A U U = U
(B) A N U = U
(C) A n A = 0
(D) A U Φ = Φ
Answer:
A
Step-by-step explanation:
Solve the system by graphing. Write the solution as an ordered pair.
y = 13x + 2
y = –x – 2
PLEASE HELP!!!!!
Answer:
the answer to the question is - 2 over 7 and - 12 over 7
Each time Caroline goes shopping she decides whether or not to buy fruit.
The probability that she does buy fruit is 0.7.
Independently, she then decides whether or not to buy a CD, with a probability of 0.6 that she does buy a CD.
Work out the probability that she buys fruit or buys a CD or both.
The probability that she buys fruit or buys a CD is 1.3.
The probability that she buys fruit and buys a CD is 0.42.
What are the probabilities?Probability determines the chances that an event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.
The probability that she buys fruit or buys a CD = 0.7 + 0.6 = 1.3
The probability that she buys fruit and buys a CD = 0.7 X 0.6 = 0.42
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Which two terms are interchangeable?
Answer: Axioms and Postulates
Step-by-step explanation:
Even if we draw more points on a line, It is an accepted statement of a fact that cannot be disproved - which which these are called Axioms or Postulates; and they are interchangeable.
I hope my explanation helped. Your welcome.
The quadratic regression equation that models these data is y = - 0.34x ^ 2 + 4.43x + 3.46 Using the quadratic regression equation what was the predicted profit in year 8? A. $ 17.14 million B. $ 17 million C. $ 16.8 million D. $16 million
Answer:
A. $ 17.14 million.
Step-by-step explanation:
Profit:
The profit, in millions of dollars, on year x, is given by:
[tex]y(x) = -0.34x^2 + 4.43x + 3.46[/tex]
Year 8
This is y(8). So
[tex]y(8) = -0.34(8^2) + 4.43(8) + 3.46 = 17.14[/tex]
$17.14 million, option A.
(sin10+cos10)²(1-sin20)-cos²20
Answer:
0.
Step-by-step explanation:
I am assuming you want to evaluate
(sin10+cos10)²(1-sin20)-cos²20
That evaluates to 0.
Will mark Brainlest Help please
If a:b =4:5 then find the duplicate value of a:b
Answer:
it must be 5:4..I'm not sure.
Answer:
[tex]16:25[/tex]
Step-by-step explanation:
The duplicate ratio of any ratio [tex]x:y[/tex] is [tex]x^2:y^2[/tex]. Therefore, the duplicate ratio of 4:5 is equal to [tex]4^2:5^2=\boxed{16:25}[/tex]
Cho S là ngoại diên của khái niệm con người, p(x,y) = x yêu thương y. 1) Viết các phán đoán sau đây dưới dạng công thức: a) Nhiều người yêu thương A. (Thay A bằng chính tên của em). b) A yêu thương nhiều người. (Thay A bằng chính tên của em).
Trường công nghiệp hả:’)
What is the average score of runa 140,96 and 13?
[tex]\huge\textsf{Hey there!}[/tex]
[tex]\large\textsf{Formula:}[/tex]
[tex]\mathsf{\dfrac{Sum\ of\ all\ terms}{Total\ number\ of\ values\ in\ the\ data}= your\ mean/average}[/tex]
[tex]\mathsf{\dfrac{140+96+13}{3}}[/tex]
[tex]\mathsf{140+36+13}[/tex]
[tex]\mathsf{140 + 96 = \bf 236}[/tex]
[tex]\mathsf{236 + 13}[/tex]
[tex]\mathsf{ = \bf 249}[/tex]
[tex]\mathsf{\dfrac{249}{3}}[/tex]
[tex]\mathsf{= \bf 83}[/tex]
[tex]\boxed{\boxed{\large\textsf{Possible answer: \huge \bf 83}}}\huge\checkmark[/tex]
[tex]\large\textsf{Good luck on your assignment and enjoy your your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
Find the area a triangle with a base of 3 ft and a height of 2/3 ft
Answer:
1 ft^2
Step-by-step explanation:
The area of a triangle is given by
A = 1/2 bh where b is the base and h is the height
A = 1/2 ( 3) * ( 2/3)
A = 3/2* 2/3
A =1
Answer:
1 ft^2
Step-by-step explanation:
The formula for the area of a triangle is as follows, a=b*h*1/2
Now, let's plug in the values to match your question. A=3*2/3*1/2
Lastly, solve. 3*2/3=6/3=2. Then divide 2 by 1/2=1.
Add the unit to make it 1 ft^2
Hope this helps!
RT = 29, RS = 2x + 1, ST = 6x + 4. What is the length of RS?
Answer:
7
Step-by-step explanation:
Given
RT=29
RS=2x+1
ST=6x+4
Now,
From the figure attached
RT=RS+ST
29=2x+1+6x+4
29=8x+5
29-5=8x
24=8x
x=3
Now,
Length of RS can be calculated as:
RS=2x+1
RS=2(3)+1
RS=7
Answer is 7
Lillia total saving y in dollars is given by the equation y= 10 x where x is the number of week
Answer:
$50 dollars saved
Step-by-step explanation:
Given
[tex]y = 10x[/tex]
Required
The amount saved after 5 weeks
We have:
[tex]y = 10x[/tex]
Substitute 5 for x
[tex]y = 10*5[/tex]
[tex]y = 50[/tex]