Answers
The answer is A) 60°
Step-by-step explanation:
It's reflecting
Related Questions
A chemist made six independent measurements of the sublimation point of carbon dioxide (the temperature at which it changes to dry ice). She obtained a sample mean of 196.64 K with a standard deviation of 0.66 K.
1. Use the Student’s t distribution to find a 95% confidence interval for the sublimation point of carbon dioxide.
2. Use the Student's t distribution to find a 98% confidence interval for the sublimation point of carbon dioxide.
3. If the six measurements had been 196.35, 196.32, 196.4 198.02, 196.36, 196.39, would the confidence intervals above be valid? Explain.
Answers
Answer:
(195.733, 197.547)
Step-by-step explanation:
Given that:
Mean, m = 196.64 K
Standard deviation, s = 0.66 K
Sample size, n = 6
Confidence interval :
Mean ± margin of error
Margin of error =Tcritical * s/sqrt(n)
Tcritical at α = 98% ; df = 6 - 1 = 5
Tcritical = 3.3648
Margin of Error = 3.3648 * 0.66/sqrt(6) = 0.9066
Confidence interval = 196.64 ± 0.9066
Lower boundary = 196.64 - 0.9066 = 195.733
Upper boundary = 196.64 + 0.9066 = 197.547
(195.733, 197.547)
Given the measurement :
X = 196.35, 196.32, 196.4 198.02, 196.36, 196.39
Mean = ΣX / n = 1179.84 / 6 = 196.64
Yes, confidence interval will be valid as theean obtained is within the calculated interval
find the selling price if the cost price is rupees 600 and profit is 13%
Answers
Answer:
=2277 Ans.
Step-by-step explanation:
Find the selling price
(a) Cost =600
Profit=13%
Selling price =Cost + profit
=600+
100
600×13
=600+78
=678 Ans.
(b) Cost=2475, loss=8%
Selling price = Cost+ profit/loss
=2475+(−
100
2475×3
)
=2475−198
=2277 Ans.
In a class of 30 students 16 have a cat and 15 have a dog there are 11 students who have a cat and a dog what is the probability that a student has a dog given they do not have a cat?
Answers
The probability that a student has a dog given they do not have a cat is 0.1333.
What is probability?Probability deals with the occurrence of a random event. The chance that a given event will occur. It is the measure of the likelihood of an event to occur.The value is expressed from zero to one.
For the given situation,
Total number of students = 30
[tex]n(s)=30[/tex]
Number of students have cat = 16
Number of students have dog = 15
Number of students have a cat and a dog = 11
The event is the probability that a student has a dog given they do not have a cat,
[tex]n(e)=15-11[/tex]
⇒ [tex]4[/tex]
Thus the probability that a student has a dog given they do not have a cat is
⇒ [tex]P(e)=\frac{n(e)}{n(s)}[/tex]
⇒ [tex]P(e)=\frac{4}{30}[/tex]
⇒ [tex]P(e)=0.1333[/tex]
Hence we can conclude that the probability that a student has a dog given they do not have a cat is 0.1333.
Learn more about probability here
https://brainly.com/question/16484393
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Rosaria filled some cups with different amounts of water, as shown below.Red cup: 0.046 liters
Blue cup: 0.05 liters
Green cup: 0.20 liters
Yellow cup: 0.6 liters witch one
Answers
Answer:
Green cup: 0.20 liters
Step-by-step explanation:
Find the absolute value
-5/6|
Answers
Answer:
5/6 OR 0.83 (with the three repeating)
Hope that helps!
Step-by-step explanation:
Write an expression using an expoent that is equivalent to 9x9x9x9x9x9x9.
Answers
Answer:
try nine to the seventh power
Step-by-step explanation:
tell me if it works
In a certain Algebra 2 class of 21 students, 6 of them play basketball and 10 of them
play baseball. There are 7 students who play neither sport. What is the probability
that a student chosen randomly from the class plays both basketball and baseball?
Answers
Answer:
2
Step-by-step explanation:
Answer:
2/21
Step-by-step explanation:
There are two kids who play baseball and basketball, and 21 students in total. Making the answer 2/21
plz help asap!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
a 12/20 = 0.6
b 21/35 = 0.6
c 28.8/48 = 0.6
A baseball team has 9 players. how many different batting orders are there?
a. 6,561
c. 244,643
b. 362,880
d. 64,446
Please select the best answer from the choices provided
A
B
С
D

Answers
9514 1404 393
Answer:
b. 362,880
Step-by-step explanation:
There are 9 ways to choose the first batter, 8 ways to choose the second, and so on. There are a total of 9·8·7·6·...·2·1 = 9! = 362,880 ways to arrange the batting order.
does 7/10 x 80 represent 70% of 80
Answers
Answer:
yes
Step-by-step explanation:
First to answer get brainliest.
If the equation given to you as a reference is, p = x - 3 + (14*29), and x is 7, then what is p? I made it fairly easy so don't disappoint me.
Answers
Answer:
see explanation
Step-by-step explanation:
p = x - 3 + (14*29)
substitute 7 for x
p=7-3+(14*29)
p=410
For the function f(x) = x2
Find f(5) =
Find f(-5)
Answers
Answer:
f(5)=(5)²=25
f(-5)=(-5)²=25
NB. Some teachers don't want 2 equals on one line, if it's your case please don't write the 2 equals on the same line
A 12-sided die is rolled. The set of equally likely outcomes is {1,2,3,4,5,6,7,8,9,10,11,12}. Find the probability of rolling a number less than 13.
The probability of rolling a number less than 13 is
(Type an integer or a simplified fraction)
Answers
The probability of rolling a number less than 13 is 1 in 12, 1/12, or %8.3 chance
Answer:
Step-by-step explanation:
the question is in the picture
Answers
9514 1404 393
Answer:
b = 2.8253A = 45.2°C = 107.4°Step-by-step explanation:
The given sides form the given angle, so the Law of Cosines can be used to find the third side.
b = √(a² +c² -2ac·cos(B)) ≈ √7.982544072 ≈ 2.8253
The measure of angle A can be found from the Law of Sines.
A = arcsin(a/b·sin(B)) ≈ arcsin(0.71017) ≈ 45.2°
Angle C can be calculated from the other two angles.
C = 180° -27.4° -45.2° = 107.4°
6(s+t)=(6•s)+(6•t)
What property is shown above?
Answers
Hope this helps! :)
if two cards are chosen from a pack of 52 play cards at a time with replacement , what is the probability of getting one heart?
Answers
The width of a rectangle is 5 centimeters less than the length . The area of the rectangle is 36 centimeters.find the length?
Answers
Answer:
9 centimeters
Step-by-step explanation:
Let the width be represented by l - 5, where l is the length.
Use the area formula, A = lw, and plug in l - 5 as w, and 36 as the area. Then, simplify and factor
A = lw
36 = l(l - 5)
36 = l² - 5l
0 = l² - 5l - 36
Factor:
(l - 9)(l + 4)
Set equal to zero and solve for both solutions:
(l - 9)(l + 4) = 0
l - 9 = 0
l = 9
l + 4 = 0
l = -4
The length cannot be negative, so the answer has to be 9.
The length is 9 centimeters
hope this helps
What is the range of the function f(x)=−3^x − 4?
(−3,∞)
(−4,∞)
(−∞,−3)
(−∞,−4)
If you culd please explain thanks
Answers
Answer:
(-oo, -4)
Step-by-step explanation:
The y-intercept is -4 and the function is negative. The y value continues infinitely downward and never rises past -4.
Hello I need help please anyone help me ??????!!!!!!
Answers
Answer:
(x-4)^2
(x-4)(x-4)
x^2-4x-4x+16
X^2-8+16
can anyone help me in picture ???????
Answers
Answer:
c
Step-by-step explanation:
It takes half of a yard of ribbon to make a bow, how many bows can be made with 7 yards of ribbon
Answers
Answer:
14
Step-by-step explanation:
Could someone help??
Simplify. −64−−−−√
Choices
−8
8i
8
−8i
Answers
Answer:
where did you intend to write the radical?
factorise fully 24squared + 18x
Answers
Answer:
18(32+ x)Step-by-step explanation:
24 square + 18x 576 + 18 x18(32+ x)A sports trainer has monthly costs of $65.94 for phone service and $42.23 for his website and advertising. In addition, he pays a $30 fee to the gym for each session in which he trains a client. Write a cost function to represent the C(x) for x training sessions. C(x) =
Answers
Answer:
C(x) = 138.17
Step-by-step explanation:
2 2/5 x 3/4
plz help me! and plz show your work.
Answers
Answer:1.8
Step-by-step explanation:
0.5 to the second power x (20-2 to the third power x 3)x(2/5x25)
Answers
Answer:
489
Step-by-step explanation:
Find the exact perimeter of the circle with a radius of 5 and round your answer to 2 decimal places
Answers
Answer:
31.42
Step-by-step explanation:
Enter an
algebraic expression for the word expression.
9 decreased by n
The expression is
Answers
Answer:
9 - n
Step-by-step explanation:
could you make me brainliest if this helped? :)
What is the standard form of the equation y = -x - 2?
A. X + y = -2
B. x = -y - 2
C. y + x = 2
D. y - x= -2
Answers
Answer:
bgyr5y53bygtr3
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
go backwords y+x = 2
y=1
x=1
Need help!!! Quick !!!
Answers
Answer:
(2, 24) (6, 72) (9, 108)
Step-by-step explanation:
For this one, we know that 2 chairs use 24 screws, which must mean that for each chair, 12 screws are needed, so we can just multiply 12 by the number of chairs being built (ex. 6) to find out how many screws are needed in total. I hope this helps :)