a school principal claims that grade 11 have a mean grade of 86 with a standard deviation of 4. suppose that the distribution is approximately normal, what is the possibility that a randomly selected grade will be less that 84?
Answers
Answer:
I'm not sure, but I think is this
z=(82–86)/4 = -1
z=(90–86)/4= 1
P(82<x<86) = 0.34134
P(86<x<90) = 0.34134
P(82<x<90) = 0.34134+0.34134 = 0.68268
Related Questions
8 asparagus filled 2/3 of a planter.
asparagus will fill 1 planter
Answers
Answer: 12
Step-by-step explanation: 8 asparagus fill 2/3rds 1/3 will be 4 so 4x3= 12 so 12 will fill 1 pot
Simplify
5g (3g+782-9)
A. 50g4 - 45g
B. 15g2 +35g3 - 45g
C. 8g2 + 12g3-4g
D. 8g +7g²-9 E. 5g4
Answers
Answer:
B. 15g^2 + 35g^3 - 45g
Step-by-step explanation:
5g(3g + 7g^2 - 9)
5 x 3 = 15 g x g = g^2; 15g^2
5 x 7 = 35 g x g^2 = g^3; 35g^3
5g x -9 = -45g
pls help i'm timed Which property of exponents must be applied when simplifying the expression 3^9 over 3^−6?
Responses
Zero Exponent Property
Power of Powers Property
Product of Powers Property
Quotient of Powers Property
Answers
[tex]\frac{3^{9} }{3^{-6}} }[/tex]
If you are dividing two exponents of common bases, subtract the exponent.
9 -(-6)
9 + 6
= 3^15
Quotient of Powers Property
Hope this helps :)
If you need any more explanation, feel free to ask. If this really helps, consider marking brainliest.
- Jeron
Hey! Can someone help me with find the distance between two points. Thank you so much!
Answers
Compare and contrast the methods you can use to
multiply a whole number and a decimal
(This is a general question)
Answers
Answer:
say for example you have 3.14 you multiply by 12.45 what would do?
Step-by-step explanation:
Answer:
say for example you have 3.14 you multiply by 12.45 what would do?
Step-by-step explanation:
Which comparison symbol makes each inequality statement true?
Enter <, >, or = to make each statement true.
(Image included)
Answers
Answer: -11 5/8< -116/8
Answer:
1. -11[tex]\frac{5}{8}[/tex] > -11[tex]\frac{6}{8}[/tex]
2. |-11[tex]\frac{5}{8}[/tex]| > |-11[tex]\frac{6}{8}[/tex]|
Step-by-step explanation:
For 1: The greater the negative number, the less it's worth (if that makes sense). So, -11[tex]\frac{5}{8}[/tex] would be greater.
For 2: The absolute value (which is what the bars indicate) of -11[tex]\frac{5}{8}[/tex] is 11[tex]\frac{5}{8}[/tex], and the absolute value of -11[tex]\frac{6}{8}[/tex] is 11[tex]\frac{6}{8}[/tex]. So |-11[tex]\frac{5}{8}[/tex]|.
Hope that helps! :)
Two friends, Rahul and Arun, took summer jobs. The equation y = 17.3x represents Arun's earnings in dollars and cents, y, for working x hours. The graph below represents Rahul's earnings in dollars and cents, y, for working x hours.
How much more does Rahul earn per hour than Arun?
Answers
Answer: Rahul earns 3.5 dollars more per hour than Arun.
Step-by-step explanation:
17.3 is the slope of Arun's earnings. To find what Rahul makes in an hour, you can find the slope of his graph below.
Use the two points, (10,208) and (20, 416)
Use the formula for calculating slope:
416-208=208
20-10=10
---------------------
208/10= 20.8
Rahul's equation can be set up like this:
y=20.8x
Subtract:
20.8-17.3=3.5
Therefore, Rahul earns 3.50 dollars more per hour than Arun.
In 5 rounds of a game, Shannon scored 75, 93, 97, 97, and 99 points.
How will the mean and the median be affected if the lowest score was removed?
Choose two statements.
A. The mean will increase.
C. The mean will not change.
E. The median will decrease.
B. The mean will decrease.
D. The median will increase.
F. The median will not change.
Answers
F. The median will not change
a
f
wrire two expressions for 2x+3
Answers
Answer:
x+x+3, 2x+1+2
Step-by-step explanation:
Answer: x+x+3 and 2x+2+1
In 2008, Hurricane Ike struck the Gulf Coast. Ike caused severe damage, including flood damage, roof damage, tree loss, power outages, and personal financial loss. To study Ike’s effects, a survey was conducted of the people living in the affected community.
Sampling method 1: A phone poll that called the first person on each page of a 300-page community phone book.
Sampling Method 2: Handed out surveys to every fifth person entering a local grocery store and library.
Total surveys were taken: 180
Total community population: 81,000
The first survey question asked about flood damage. From the survey, 20 people reported that their homes sustained some sort of flood damage. Using this information, calculate how many people in the community sustained flood damage from the hurricane.
Answers
Answer:
Hurricane Ike made landfall just southeast of the Houston-Galveston region as a Category 2 hurricane on September 13, 2008. It is estimated to cause a total of $37.5 billion in damage, making it the third costliest storm in United States history.
Step-by-step explanation:
Answer:
Hurricane Ike made landfall just southeast of the Houston-Galveston region as a Category 2 hurricane on September 13, 2008. It is estimated to cause a total of $37.5 billion in damage, making it the third costliest storm in United States history.
Step-by-step explanation:
hi i need help can u answer i will tire to give branle least Audrey and David are reading the same book. Audrey reads 40 pages each day. David reads 20 pages each day. Which of the following is a true statement about the number of pages Audrey and David have read after each day? Select all that apply. A. Audrey has always read twice as many pages as David. B. After 6 days, Audrey and David have read the same total number of pages. C. Audrey has always read a total of 20 pages more than David. D. After 2 days, Audrey has read 40 more pages than David. E. After 3 days, Audrey has read three times as many pages as David.
Answers
The number of pages read after 7 days by Audrey will be 20 pages and David will be 140 pages.
im pretty sure this is it! good luck :)
Answer: Select A and D
Please help with these questions! Giving 100 points + brainliest.
Answers
Answer:
1. Pythagorean theorem
2. Square root of 73cm
3. A leg
4. The hypotenuse
5. 9
Hope this helps :)
blank 2:since h =4 use the v to find the volume
blank 3: the volume is aprox 113.04 cm^3
just if someone gets this question!!
Answers
Answer:
You selected the correct answer.
Step-by-step explanation:
Use the Distributive Property to simplify the expression. -4(x + 3)
Answers
The answer simplified is
-4x-12
Please please help very urgent!!
A bag of letter tiles contains the letters A, B, C, D, and E. Which of the following is the complement of the event that the letters B and D are picked?
Answers
Answer: you have a 1/5 chance of every tile
Step-by-step explanation: if your trying to pick out B or D you have a 2 out of 5 chance.
the difference between solving for surface area and solving for volume
Answers
Answer: The Surface Area is a sum total of Area of the planes that form a surface/shape while Volume is the space enclosed within a figure/shape/surface.
The Surface Area is a 2-Dimensional concept with units m², cm² or mm² where as Volume is a 3-Dimensional concept with m³, cm³ or mm³ as units.
Find −7/10−(−4/15) . Write your answer as a fraction in simplest form.
Answers
If the sales tax rate is 4% in Kansas, then how much sales tax would you pay in Topeka for a $156 cart of groceries?
Thank u!
Answers
Karen spends $450 per month on bills. If 1/10 is for wifi, 2/9 if for utilites, and the remaining amount is for rent, how much is her rent payment?
Answers
Answer:305
Step-by-step explanation:
(2/9)*450=100
(1/10)*450=45
100+45=145
450-145=305
Explanation : took the test
Hi! Can someone help me with the find the distance between two points. Thank you!
Answers
Answer:
20
Step-by-step explanation:
Using the distance formula
Answer: all you got to do is count all the space and you well get close to the -10 to be 6 -7
Step-by-step explanation:
A new bakery is giving away free prizes for the grand opening. Every 5th customer will get a free bagel, every 9th customer will get a free blueberry muffin, and every 12th customer will get a free slice of carrot cake. Diego is the 23rd customer, he thinks he should get farther back in line to get a prize. Is he right? How far back should he go?
Answers
Answer:
1 spot back
Step-by-step explanation:
23 is closest to the number 24. 24 isn't divisible by 5 or 9 but it is by twelve. He Should only move 1 spot back because he is 1 in front of 24.
Answer: Diego is right and needs to go 1 place back.
Step-by-step explanation: We start by finding the least multiple for 5 it is 25, 9 is 27, and finally 12 is 24 and 24 is the closest so he only needs to back one place in line.
solve for m
-5m = -35
m=?
Answers
Answer:
m = 7
Step-by-step explanation:
-5m = -35
___ ___ Divide -5 on both sides.
-5 -5
m = 7
9.6x + 13.4 = 34.2
9.6x = ?
x = ?
round to nearest tenth
Answers
Answer:
9.6x=20.8
x=2.2
Answer:
9.6x=20.8
x=2.2
Step-by-step explanation:
PLS HELP REALLY QUICK!!!! 100 COINS AND BRAINLIEST
Answers
Answer:
If you need help with anything go to the website called Jishka they got you covered, thanks for the points btw. can i have brainliest if you find the answer?
Step-by-step explanation:
I need answers and to fill in the blanks, I'm sorry if this is a little amount but here's 15 points
Answers
Answer:
why thank you!
Step-by-step explanation:
but if you need help I'm here
Answer:
Step-by-step explanation:
Trying to complete ASAP. You are throwing a party and have a 1-liter jar of sauce for dipping mozzarella sticks. Part A: Determine how many ounces are in 1 liter. Show every step of your work. (10 points) Part B: You need to use 2-ounce containers for your guests. How many of these containers can you fill with sauce? Show every step of your work. (2 points)
Answers
Answer:A. 33.814 ounces B. 17 containers.
Step-by-step explanation:
Since there is only 33.814 USA fluid ounces (fl. oz) A is answered.
[tex]\frac{33.814}{1}[/tex] = 33.814
A. 33.814 ounces
Now that you need 2-ounce containters to fill with the 33.814 ounces (at this point you cant round to 34 ounces) how many cups do you need?
33.814/2 = 16.907 ounces (basicly 17 cups for the guests)
B. 17 containers.
Part A : The number of ounces in 1 liter is 33.814 ounces.
Part B : The number of containers that can fit the sauce is 17.
What is Unit Conversion?Unit conversion is defined as expressing the same quantity by different measurement units.
For example, a distance of 20 meter can be also expressed as 2000 cm. The distance is same.
Given that,
Amount of sauce for dipping mozzarella sticks = 1 liter
Part A :
We have the unit conversion,
1 liter = 33.814 ounces
Part B :
Measurement of containers = 2 ounces
Total amount of sauce = 33.814 ounces
We have to divide the total amount of sauce in to 2 ounce containers.
Number of containers formed = 33.814 / 2 = 16.907 ≈ 17
Hence there will be 17 containers of sauce.
Learn more about Units here :
https://brainly.com/question/19420601
#SPJ2
Price markup and discount 7.RP.3
Stop and shop marked up the price of their bananas by 10%. If the original price was 0.39 for one banana. How much will you pay now for four bananas?
Answers
Answer:
hello can you explain it a lil more pls
but i promise ill answer it
Step-by-step explanation:
I think it is $1.72
But I don’t exactly know for sure
Need answer asap please and thank you
Answers
Answer:
x=2
Step-by-step explanation:
2x2x2 = 8
...........
Samuel is folding his laundry. The table shows the proportional relationship between the number of shirts he folds and the time, in minutes, it takes him to fold them. Number of Shirts 2 4 ? Time (minutes) 0.40 0.8 3 How many shirts can Samuel fold in 3 minutes?
i will give brainiest and thanks
Answers
Answer:
He can fold 30 shirts in 3 minutes.
Step-by-step explanation:
the number of patients at a doctor's office is tracked over a period of 10 days. which statement best supports the data?
please help
Answers
The data for Dr amines office is more symmetrical than the data for Dr Harne’s office.