Answer:
5n
Step-by-step explanation:
A curious statistics student cannot get enough statistics, so he decides to analyze the percentage of students sleeping in his statistics class. He discovers that of the 30 students in his class, 47% of the students were asleep at some point during the class period. Assuming the 30 students is less than 10% of all the students taking statistics in his school, and assuming the 30 students in the class were randomly assigned to the class, what model would he use to analyze the percentage of sleeping statistics students
Answer:
c) N(.47, .09)
Step-by-step explanation:
Options to the question are "a) N(.30, .10), b) N(.30, .09). c) N(.47, .09), d) N(.47, .008), e) N(.30, .008)"
Pο = 47% = 0.47
n = 30
Mean = Pο = 0.47
S.D = Pο(1-Pο) / n
S.D = 0.47 * 0.53 / 30
S.D = 0.09
Thus, the percentage of sleeping statistics of students follows a Normal distribution with mean = 0.47 and S..D = 0.09
Find the sum
(-14.2b - 97.35) + (6.76d - 118.7 – 3.4d)
Answer:
−14.2b+3.36d−216.05
Step-by-step explanation:
collect terms:(−14.2b−97.35)+((6.76d−3.4d)−118.7)
simplify: −14.2b−97.35+3.36d−118.7
terms: −14.2b+3.36d+(−97.35−118.7)
simplify: −14.2b+3.36d−216.05
Please help ASAP!
Thank you
Eliana worked 16 1/2 hours for the first week of the month and 16 1/4 hours the second week of the month. Her pay for these 2 weeks was $412.65. How much did Eliana earn per hour?
Answer:
She earned $12.60 per hour
Step-by-step explanation:
Pay was $412.65
Hours worked = 16.5 + 16.25 = 32.75 hrs
hourly rate = $$/hrs = 412.65/32.75 = 12.6
She earned $12.60 per hour
lm=6x+3 mn=4x-17 ln=x+14 (find the range of possible values for x, help a sister out)
Answer:
Step-by-step explanation:
lm=6x+3
mn=4x-17
ln=x+14
lm+mn>ln
6x+3+4x-17>x+14
10x-14>x+14
9x>28
x>28/9
mn+ln>lm
4x-17+x+14>6x+3
5x-3>6x+3
-x>6
x<-6
lm+ln>mn
6x+3+x+14>4x-17
7x+17>4x-17
3x>-34
x>-34/3
combining x<-6 or x>28/9
how do I find b of the traingal
Answer:
Pythagorean Theorum:
16ft
Step-by-step explanation:
pythagorean theorum states a^2+b^2=c^2
it only works for right triangles, c is the hypotenuse, a and b are the legs
so to find b we plug in the info we have!
7.8^2+b^2=17.8^2
next we simplify:
60.84+b^2= 316.84
subtract 60.84 from both sides to isolate the variable:
b^2=256
square root both sides
b=16
16ft is the answer
I hope this helps!
Answer and explain pleaseeeee.
Answer:
Answer : - diagonals of rhombus are perpendicular. According to the property of rhombus. Diagonals of rhombus are perpendicular. In this question the triangle NQM is a right angled triangle and it is clear that it is right angled triangle because he mentioned angle MQN = 90°
PLEASE HELP !!!
In an 80/20 mortgage, what is the first mortgage used for
A. 80% down payment
B. 20% interest rate
C. 20% down payment
D. 80% of the home’s value
============================================================
Explanation:
As you probably expect, the first number 80 refers to the percentage the first loan covers. If the house is say $100,000, then the first loan is $80,000 while the second loan is the remaining $20,000.
An 80/20 mortgage, or similar, will have two monthly payments because you are getting two mortgages bundled together. Usually you should pay a down payment, though it may likely depend on your credit history. Those with good credit will pay less or no down payment, compared to those with worse credit will have to pay more down payment. A good rule of thumb is that 20% of the home's value is made as down payment, though this isn't what the "20" in "80/20" is referring to.
An 80% down payment is extremely high and unreasonable. Not many people have that kind of money laying around. A similar story applies to a 20% interest rate which is incredibly large for a mortgage rate (typically they are in the single digits such as 3%).
(33x3)+(33x3)= blah blah blah sorry it had to be 20 characters long ;)
Answer:
198
Step-by-step explanation:
due to order of eliminations u multiply 33 and 3 in both parantheses. then you add them together, you get 198.
What is the y-intercept of the line with the equation 4y = -3x + 10?
Step-by-step explanation:
Given
4y = - 3x + 10
y = ( - 3x + 10 ) / 4
y = - 3/4 x + 10 / 4
y = - 3/4 x + 5 / 2
Comparing the given equation with y = mx +c Then
y - intercept (c) = 5/2
Hope it will help :)
Tiffani buys a new pair of shoes. She spends $81 including an 8% sales tax. What was the original price of the shoes to the nearest dollar?
Answer:
the original price of the shoes is $75
Step-by-step explanation:
x * 1.08 = 81
x = 81 / 1.08 = 75
75 * 1.08 = 81
Look at the angles marked a, b, c and d.
Write the letter of the angle alongside its special name.
acute angle
reflex angle
right angle
obtuse angle
Answer:
acute angle : C
reflex angle : B
right angle : D
obtuse angle : A
Matilda recently took a statistics quiz in her math class. in one question, 45 of 900 visitors at a local craft show were surveyed about the cost of admission to the show. Matilda incorrectly stated that the sample in this situation was represented by 900 visitors at the craft show.
a. what is Matilda's error?
b. what is the actual sample?
Answer:
A. Her error was that she thought that they were surveying the whole town so 900 would be the sample.
B. The actual sample is 45.
Step-by-step explanation:
The actual sample is 45 because 45 people out of the 900 visitors (population) were surveyed.
Using the graph of f, determine f(0).
how much of a radioactive kind of protactinium will be left after 28 hours if you start with 672 grams and the half-life is 7 hours?
Answer:
Step-by-step explanation:
672·0.5^(28/7) = 672·0.5⁴ = 42 grams
Please help!
Write down the correct type of angle for angles A to E.
Answer:
Angle A- Obtuse angle
Angle B- Right angle
Angle C- Reflex angle
Angle D- Reflex angle
Angle E- Acute angle
Angle A is Obtuse angle, Angle B is Right angle, Angle C is Reflex angle, Angle D is Reflex angle and Angle E is Acute angle
What are Angles?An angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
Obtuse angle is any angle greater than 90°
A right angle is an angle measuring exactly 90°
A reflex angle is an angle that is more than 180 degrees and less than 360 degrees.
Any angle that measures greater than 0° and less than 90° is called an acute angle.
By the definitions of these the angles are
Angle A- Obtuse angle
Angle B- Right angle
Angle C- Reflex angle
Angle D- Reflex angle
Angle E- Acute angle
Hence, Angle A is Obtuse angle, Angle B is Right angle, Angle C is Reflex angle, Angle D is Reflex angle and Angle E is Acute angle
To learn more on Angles click:
https://brainly.com/question/28451077
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The price technology stock dropped to $9.71 today. Yesterday's price was $9.82. Find the percentage decrease.
The cylinder on a tanker truck is 27 feet long and has a radius of five feet. What is the volume of the tank?
Answer:
2120.85 ft^3
Step-by-step explanation:
Given data
Height h= 27 ft
Radius r= 5 ft
The volume of a cylinder is given as
V= πr^2h
Substitue
V= 3.142*5^2*27
V= 3.142*25*27
V= 2120.85 ft^3
Hence the volume is 2120.85 ft^3
The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to find out the fraction of people who appear on the list that are actually caught. Step 2 of 2 : Suppose a sample of 897 suspected criminals is drawn. Of these people, 322 were captured. Using the data, construct the 95% confidence interval for the population proportion of people who are captured after appearing on the 10 Most Wanted list. Round your answers to three decimal places.
Answer:
The answer is "0.359"
Step-by-step explanation:
Throughout the given question, in the sample of 897 suspected offenders were identified, 322 have also been convicted. So, the estimate of the population of individuals caught and been on the ten most attractive lists is then estimated:
[tex]\to \frac{322}{897} = 0.3589743.. \approx 0.359[/tex]
Express answer as an inequality: -13+ a > 2a - 20??
Answer:
7 >a
Step-by-step explanation:
-13+a>2a-20
-13+20 >2a-a
7 > a
The cost of 30 books is rupees 400 half. Find the cost of one book.
I guess the answer is 6.66 or 13.33
A rectangular prism has a base that is 1.5 meters by 2 meters, and the prism is 4 meters
high. What is the surface area of the prism?
A 28 m
C 12 m2
B 34 m2
D 31 m²
Answer:
The answer is C. 12 m2
Step-by-step explanation:
Hope this helps!! :) :) Please mark brainlliest.
A circles diameter is 12 inches what is the circles circumference using 3.14 rounded to the nearest tenth
Answer:
[tex]37.7in.[/tex]
Step-by-step explanation:
The circumference of a circle is: [tex]C=2\pi r[/tex]
However, the question wants us to use 3.14 instead of [tex]\pi[/tex].
We are given 12 inches as the diameter of the circle.
We want the radius, which is half of the diameter.
The radius of the circle is 6 inches.
Now that we have the radius, we plug and chug.
[tex]C=2*3.14*6in.\\C=6.28*6in.\\C=37.68in.\\[/tex]
However, the question wants us to round the answer to the nearest tenth.
Therefore, the new answer is: [tex]37.7in.[/tex]
The volume of the prism is 72 cubic feet. Find the missing height of the triangular prism, and the surface area.
Answer:
h = 12
surface area = 192
Step-by-step explanation:
Volume of this prism = 72
The base triangle has an area of B * h/2
The base = 6
The height in red = 2
Area = 1/2 * 6 * 2
Area = 6 ft^2
The volume = B * h = 72
The base = 6
6* h = 72
h = 72/6
h = 12
The surface area = 2 triangles + the rectangle face closest to us + the rectangular face whose width is 4 + rectangular face whose with is 5
The surface area = 2 * 6 + 6* 12 + 4*12 + 5 * 12
The surface area = 12 + 72 + 48 + 60
The surface area = 192 square feet.
R+2 1/4 = 4 1/2 what does r = ?
Answer:
exact form: r= 9/4
decimal form: r=2.25
mixed number form: r= 2 1/4
Step-by-step explanation:
Answer:
R=2 1/4 or 9/4
Step-by-step explanation:
You make the 4 1/2 a 4/24 so it equals 2 1/4
Than you subtract 4 2/4-2 1/4 to get 2 1/4
Hope this helps!!
Here is a long-division calculation of 917:7.
1 31
7
9 1 7
- 7
2 1
- 2 1
- 7
0
There is a 7 under the 9 of 917. What does this 7 represent?
Answer:
Step-by-step explanation:
it means that 7 goes into 9 one time, and its seven.
Help me out here pleaseeeeeeee
Answer:
176
Step-by-step explanation:
11ft x 16ft = 176ft
1ft x 176ft = 176ft
Line A is represented by the equation given below:
x + y = 4
What is most likely the equation for line B, so that the set of equations has infinitely many solutions? (1 point)
4x + 4y = 4
4x + y = 4
2x + 2y = 8
x + y = 8
Answer:
3
Step-by-step explanation:
2x + 2y = 4
dividing both sides by 2,we get
x + y = 4,which is the same line A
so this set of equations has infinitely many solutions as they intersect each other at infinite points i.e they overlap eachother
8 increased 3 times by a number t
Answer:
3t+8
Step-by-step explanation:
Answer:
3t + 8
Step-by-step explanation:
Let the number be represented by
t
Now Interpreting the statement;
Three times a number;
3 × t
3t
Increased by eight;
3t+8
I hope this is helpful
please mark it as brainlist
Select the type of equations.
equivalent
inconsistent
consistent
Answer:
the answer is inconsistent hope this help :)
Step-by-step explanation: