Answer:
C= π*d
c= π*10
c= 10 π
c= 10 * π
c= 10*3.14= 31.4 cm
Answer:220/7 or 31.4
Step-by-step explanation:
circumference of circle= 2*pi*radius
radius= half the diameter so its equal to 10/2=5
so C=2*22/7( or 3.14)*5=220/7(or 31.4)
AT&T would like to test the hypothesis that the average revenue per retail user for Verizon Wireless customers is greater than $50. A random sample of 32 Verizon Wireless customers provided an average revenue of $54.70. It is believed that the population standard deviation for the revenue per retail user is $11.00. Using LaTeX: \alpha=0.05α = 0.05 , answer the following questions: a. Identify the null and alternative hypotheses to conduct an appropriate hypothesis test of mean. (3 points) b. Use the critical value approach to test this hypothesis. (3 points) State your decision and conclusions explicitly. (3 points) c. Use the p-value approach to test this hypothesis. (3 points) State your decision and conclusions explicitly. (3 points) d. Assume that the actual population mean for revenue per retail user is $44.30. Calculate the probability of type II error. (5 points)
Answer:
H0; u = 50 average revenue equals 50
H1: u not equal to 50, average revenue not equal to 50
This is 2 tailed
Alpha = 0.05
Z critical = 1.6449
We find the test statistics
Mean = 54.7
Sd = 11
n = 32
barX - u/sd/√n
= 54.70-50/11/√32
= 4.70/1.9435
= 2.418
Decision rule: reject H0 if test statistic > critical value. Accept if otherwise
2.418>1.6449
We reject H0
We conclude that average revenue is not equal to zero
C. P(z>=2.418) = 0.9922
1 - 0.9922
= 0.0078 (I used Ms excel here)
0.0078 < 0.05
So we Reject h0
The equation for velocity is v = distance time . Evaluate the velocity of an object that travels 15 meters in 2.5 seconds.
Answer:
What is acceleration?
Imagine you are playing golf, and you’ve just set up the golf ball on the tee. You test your grip, take a few practice swings, and peer into the distance at the flag pole marking the first hole for the course. Your wise golf ball guru (who happens to also teach physics) tells you to “Be the ball, young grasshopper.” So you close your eyes and picture the distance the ball must travel. “Yes, young earthworm”, your sensei says, “that distance you see is the displacement you must achieve, displacement is the change in position from one place to another.”
Step-by-step explanation:
Select the correct comparison.
Set A
Set B
...
...
2 4 8 10
0 2 4 6 8
A. The typical value and the spread are both greater in set B.
B. The typical value is greater in set A. The spread is greater in set B.
C. The typical value is greater in set B. The spread is greater in set A.
D. The typical value and the spread are both greater in set A.
Answer:
it is B.
Step-by-step explanation:
Plz help I’m on a time limit
A realtor sells houses in three different neighborhoods in the city-A, B and
C. He sells ranch style homes and two-story homes. Last year, 60% of his
sales were in neighborhood A, while neighborhood B made up 25% and
neighborhood C was 15% of the sales. Only 10% of the houses in
neighborhood A were ranches, compared with 40% for neighborhood B and
50% for neighborhood C. Suppose we randomly select
one of the homes he
sold in one of these three neighborhoods.
Draw a tree diagram of this chance process?
....................................................................................................................................................................................................................
The probability tree will have three branches at start and then, each branch will have two more branches for ranch and two story houses.
Given information:
There are three cities A, B, and C.
The homes are of two types; two story and ranch.
The sales in A, B, and C is 60%, 25%, and 15%, respectively.
The ranch houses in A, B, and C are 10%, 40%, and 50% respectively.
So, the probability tree will have three branches at first. These three branches will have probability of 0.6, 0.25, and 0.15, for A, B, and C, respectively.
See the attached image.
Therefore, the probability tree will have three branches at start and then, each branch will have two more branches for ranch and two story houses.
For more details, refer to the link:
https://brainly.com/question/15730909
Does the Y-axis or X-axis come first?
Answer:
X
Step-by-step explanation:
The X-axis is the one on the bottom if you are in the first quadrant. The y-axis is on the left or up and down. If you are writing location(I can't remember the name but it looks like this (2,3)) you would write the X-axis down first. Hope this helped!
write down in terms of n an expression for the nth term of the following sequences 9 11 13 15 17
Answer:
2n+7
Step-by-step explanation:
+2 +2 +2 +2
9 11 13 15 17 so we start with 2n
2 ➡ 9 = +7 6 ➡ 13 = +7
4 ➡ 11 = +7 8 ➡ 15 = +7
So the answer is 2n + 7
Mateo was training for a triathlon (a multisport race which includes 1.5 km swim, 40 km bike ride and a 10 km run). His speed for
swimming, biking, and running is 2 km/h 25 km/h, and 10 km/h, respectively
How long will it take Mateo to finish the race?
Give your answer in hours as a decimal.
Answer:
swimming: 0,75h
biking: 1,6h
running: 1h
Step-by-step explanation:
helppppppppppppppppp
Answer:
You're answer is correct
If a worker is making $8 an hour how much would they make in 6 hours?
Answer:
$48
Step-by-step explanation:
8•6= 48
.....uchild
Which of the following is a way that citizens can directly influence law-making and public policy?
Answer: A way citizens can directly influence the public policy is by following it or not. If there is a policy that no one agrees with, they will not follow it and show that the policy is wrong. When this is done, the policy will go away. That is how citizens can directly change this.
Step-by-step explanation:
Marcus is selling lemonade and peanuts. Each cup of lemonade
costs $0.75, and each bag of peanuts costs $0.35. On Saturday,
Marcus sold 5 more cups of lemonade than bags of peanuts. He
earned 57.05. How many cups of lemonade did Marcus sell on
Saturday?
Answer:
8 cups of lemonade
Step-by-step explanation:
Let us assume x be the number of bags of peanuts.
And, y be the number of cups of lemonade.
Now the equations are
0.35x + 0.75y= $7.05
And,
y = x+5
Now solve it by substitution method.
0.35x + 0.75(x+5) = 7.05
0.35x + 0.75x + 3.75 = 7.05
1.1x = 7.05 - 3.75
1.1x = 3.3
x = 3.3 ÷ 1.1
= 3
Now for
y = x+5
= 3+5
= 8
If we divide Rs 20 between Jatin and Arnav in the ratio 3 : 2, how much will each of
them get?
Answer:
$12
$8
Step-by-step explanation:
Amount Jatin received = (ratio of Jatin's share / sum of ratios) x amount shared
sum of ratios = 3 + 2 = 5
(3/5) x 20 = $12
Amount Arnav received = (ratio of Arnav's share / sum of ratios) x amount shared
(2/5) x 20 = $8
or
$20 - $12 = $8
Is 0.35 greater than 4/9
Answer:
No
Step-by-step explanation:
It is not because 0.35 is less then 4/9 or 0.44444.
what quantity should be added to both sides of this equation to complete the square x^2+12x=-15
Answer:
36
Step-by-step explanation:
Pls help asap will mark brainliest firtst answer!!
Answer:
The answer is C
Step-by-step explanation:
9 of the 20 drawn were red
9/20* 100 = 45
The slope of any vertical line is
Answer:
undefined
Step-by-step explanation:
4. The quotient of a number and 3 is at least 5.
Answer:
15 20 25 any of those!
Step-by-step explanation:
mark brainliest pls
Find the value of X in the equation below.
10X = 12
Step-by-step explanation:
10x=12
x=12/10=6/5
A store buys a jackets for $20.00 and sells it for 80% more than that what is the selling price of the jacket
Answer:
$36
Step-by-step explanation:
in the beginning $20 is %100 so divide 20 by 100 .you'll get .2 but to make this simple you'll want %10 so multiply .2 times 10 and you get 2 .now that 2 is %10 and you want %80 you multiply 2 8 times (or add it 8 times) because %10 times 8 = %80 so 2 times 8 = 16 .now that you have the %80 you want to add it to the %100 because they sold it for %80 then the price they bought if for (you get %180) . then you add the $20 to the $16 because that is what each percent equals (you get $36)
Answer:
$36
Step-by-step explanation:
What we know: The jacket is marked up by 80% of the jacket. The store is now selling the jacket for 180% of what they bought it for.
Set up problem: x 180%
___ = ____
$20 100%
What do the numbers mean when set up like this(referring to problem set up): We know that $20 is the original price of the jacket. So $20 is 100% of the jacket(if that makes sense). Markup is 80% because "sells it for 80% more" . So it goes on top.
Solving the Problem#1: 180 x 20 = 3600
Solving the Problem#2: 3600/1000= $36
Checking My Math: What is 80% of $20. Let's divide $20 into 4 parts.
$4 + $4 + $4 + $4 + $4 =20
$4 is 20% of 20
$8 is 40% of 20
$12 is 60% of 20
$16 is 80% of 20
$20 is 100% of 20
Final Answer: $36 is the selling price of the jacket
Note: I used a scientific calculator for some calculations.
Plsss help me with this math question!!!
Answer:
Option c.
Step-by-step explanation:
Volume = length * breadth *height
According to the question,
(3/2 * 1/2 * 2)ft^3
= 3/2ft^3
Hope this helped :)
(-8 times (-2/3)
Easy 7th grade work pls answer in fraction form
Answer:
[tex]-8 \times \frac{-2}{3}\\\\= \frac{-8 \times -2}{3} \\\\= \frac{16}{3}[/tex]
Plz I need help Plz I need help Plz I need help Plz I need help Plz I need help!!!!!!!!!!!!!!!!!!!!!!
find the length of line segment connecting (2,1) and (3,3)
Answer:
square root of 5
Step-by-step explanation:
Use distance formula:
[tex]\sqrt{(3-1)^2 + (3-2)^2} \\\sqrt{2^2 + 1^2}\\\sqrt{4 + 1} \\\sqrt{5}[/tex]
1 3/5 =
Please help me
If you want it in improper fraction the answer will be,
8/5
And if you want it in decimal form, the answer would be
1.6
hope it helps.
What is the simplest form of 3/5 + 1/3
Answer:
8/15 +5/15 = 12/15 = 4/5
Step-by-step explanation:
Suppose the probability of a false positive result on a mammogram is 4%. Suppose that the probability of a false negative result on a mammogram is 2%. Assume that the probability that a randomly chosen woman has breast cancer is 0.0002. If a woman has a positive test result, what is the probability that she actually has breast cancer
Answer:
0.0049 = 0.49% probability that she actually has breast cancer
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which
P(B|A) is the probability of event B happening, given that A happened.
[tex]P(A \cap B)[/tex] is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Positive test result
Event B: Breast cancer
Probability of a positive test result:
4% of (1 - 0.0002)
98% of 0.0002
So
[tex]P(A) = 0.04*(1 - 0.0002) + 0.98*0.0002 = 0.040188[/tex]
Having breast cancer and testing positive.
98% of 0.0002
So
[tex]P(A \cap B) = 0.98*0.0002 = 0.000196[/tex]
What is the probability that she actually has breast cancer?
[tex]P(B|A) = \frac{0.000196}{0.040188} = 0.0049[/tex]
0.0049 = 0.49% probability that she actually has breast cancer
I got 12 will someone double check me please? No links I can’t open them
Answer:
the first 6⅔
Step-by-step explanation:
in the image
Find the circumference of the pizza, if the diameter is 9 inches.
The circumference of the pizza is approximately 28.27 inches.
What is a circle?A circle is a two-dimensional figure with a radius and circumference of 2pir.
The area of a circle is πr².
We have,
The circumference of a circle is given by the formula:
C = πd
where d is the diameter of the circle and π (pi) is a mathematical constant approximately equal to 3.14.
In this case, the diameter of the pizza is 9 inches.
Substituting this value in the formula, we get:
C = πd
C = π(9)
C ≈ 28.27
Therefore,
The circumference of the pizza is approximately 28.27 inches.
Learn more about Circle here:
https://brainly.com/question/11833983
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Circuit City is having a sale on computers. Max picks out a computer that was originally $1199.99 If the computer is 41% off, What is the final price of the computer? Round to the nearest penny.
Answer:
$707.9941 rounded is $707.99
Step-by-step explanation:
41%=0.41
1199.99*0.41=491.9959
$1199.99-$491.9959=$707.9941
$707.9941 rounded is $707.99
the four doesn't round up so it would just be $707.99.
Hope this helped!
A password must have 2 letters and 3 digits. How many different passwords are possible?
A) 60,466,176
B) 468,000
C) 676,000
D) 82