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Posts by bobbie

Total # Posts: 95

Probability
How many combinations are there of six distinct objects taken three at a time?

Math Help
Explain what is meant by an experiment. Give an example. For the example you have chosen, describe (a) a sample point, (b) the sample space, and (c) an event of the experiment.

Probability
What is the probability of an event E in a uniform sample space S?

Probability
The mean annual starting salary of a new graduate in a certain profession is $43,000 with a standard deviation of $500. What is the probability that the starting salary of a new graduate in this profession will be between $39,500 and $46,500?

Math Probability Distribution
A probability distribution has a mean of 57 and a standard deviation of 1.4. Use Chebychev’s inequality to find the value of c that guarantees the probability is at least 96% that an outcome of the experiment lies between 57 - c and 57 - c. (Round the answer to nearest ...

Probability Help
Fourty people are selected at random. What is the probability that none of the people in this group have the same birthday? ?

Probability
A customer at Cavallaro's Fruit Stand picks a sample of 4 oranges at random from a crate containing 50 oranges, of which 4 are rotten. What is the probability that the sample contains 1 or more rotten oranges?

Probability Help
In ''The Numbers Game,'' a state lottery, four numbers are drawn with replacement from an urn containing the digits 0-9, inclusive. Find the probability of a ticket holder having the indicated winning ticket. ? All four digits in any order(including the other ...

College Math
Four balls are selected at random without replacement from an urn containing four white balls and five blue balls. Find the probability of the given event. ? All of the balls are blue.

Probability Help
Forty people are selected at random. What is the probability that none of the people in this group have the same birthday? ?

Probability Help
Forty people are selected at random. What is the probability that none of the people in this group have the same birthday? ?

College Math
There were 42 different presidents of the United States from 1789 through 2000. What is the probability that at least two of them had the same birthday?

Math Help
Assume that the probability of a boy being born is the same as the probability of a girl being born. Find the probability that a family with five children will have at least one boy.

Probability Help
Assume that the probability of a boy being born is the same as the probability of a girl being born. Find the probability that a family with five children will have at least one boy. 1, 4/5, 13/16, 1/32, 31/32 Can someone please explain? Thank you ?

Can someone Help w/Math
Data released by the Department of Education regarding the rate (percentage) of ninth-grade students that don't graduate showed that out of 50 states, 16 states had an increase in the dropout rate during the past 2 years. 18 states had a dropout rate of at least 30% during...

Please help w/Math
A survey of the opinions of 12 leading Economists in a certain country showed that, because oil prices were expected to drop in that country over the next 12 months, 10 had lowered their estimate of the consumer inflation rate, 10 had raised their estimate of the gross ...

Precal/Math
Solve: log(3-2x)-log(x+24)=0

Precal
Solve the equation: Logx=1-log(x-3)

Math
How many 4 digit multiples of 5 can be form d using the digits, 1,2,5,7,9,0 if repitions are not allowed?

Precal/Math
How do i find the equation in the form: y=a(sqrt b(x-h))+k From the points (-5,3) (-4,-1) (-1,-5)

Math
How do i get left side to equal rs? (Tanx/1+secx)+(1+secx/tanx)=(2/sinx)

Precal
How do i get left side to equal right side? (Cos x)/(1+sin x) + (cos x)/(1-sin x) = 2secx

Math
use the rule to write the first twelve numbers in the pattern. describe another pattern in the numbers. Rule: Add 3, subtract 2 First term: 7

geometry
two round fountains are similar. one measures 4'6 across and the other measures 9'7 across. find the scale factor from the small one to the large one

Steve - Stat
A Bacteria has a doubling period of 8 days. If there are 2250 bacteria present now, how many will there be in 33 days? find the growth rate (Round this to 4 decimal places). Growth Rate___________. There will be _________ Bacteria. The growth rate you posted is showing up as ...

Stats - Please help me
OK .. thanks .. the 39258 is correct. but the 1.0905 is showing as incorrect.

Stats - Please help me
A Bacteria has a doubling period of 8 days. If there are 2250 bacteria present now, how many will there be in 33 days? find the growth rate (Round this to 4 decimal places). Growth Rate___________. There will be _________ Bacteria. I came up with:.0668 for the growth rate (I ...

Stat
A Bacteria has a doubling period of 8 days. If there are 2250 bacteria present now, how many will there be in 33 days? find the growth rate (Round this to 4 decimal places). Growth Rate___________. There will be _________ Bacteria.

PreCal
Rationalize the denominator of the expression: sqrt2+1/sqrt-1

Biology
What happens as a result of insertion (the mutation)?

algebra
24 increased by y

algebra
What is the translation of 24 increased by y??

Math
If a flew flew an estimated distance of 800 kilometers what is the greatest distance the plan could have flown

ALGEBRA / MATH / FINANCIAL
PLEASE HELP.. HERE'S THE QUESTION.... RYAN IS GOING TO INVEST $4000 INTO 2 INVESTMENT OPTIONS. ONE OPTION PAYS 3% AND THE OTHER OPTION PAYS 3.5% SIMPLE INTEREST. HOW MUCH DID RYAN INVEST IN EACH OPTION IF THE INTEREST EARNED IN THE OPTION PAYING 3.5% SIMPLE INTEREST IS $94...

Stats
Consider the following Hypotheses test: Ho:m>=80 Ha:m<80 A sample of 121 provided a sample mean of 77.3. The population Standard Deviation is known to be 16.5. A. compute the value of test statistic B. Determin the p value: and at 93.7% confidence, Test the above ...

Economics: Am I right?
I am completely stuck on these two questions. I have read my chapter, but I am still doubting that I got the answers correct. 1.A decrease in aggregate demand causes a decrease in ______ only in the short run, but causes a decrease in ______ in both the short run and the long ...

Algebra 1a
24 increased by y

economics
am completely stuck on these three questions. I have read my chapter, but I am still doubting that I got the answers correct. 1.A decrease in aggregate demand causes a decrease in ______ only in the short run, but causes a decrease in ______ in both the short run and the long...

calculus
Given the function f(x) = 3x - 9 a. Find the rate of change between the two stated values for x: 7 to 8 b. Find the equation of a secant line containing the given points: (7, f(7)) and (8, f(8))

English
im failing most of my classes cause I started connexus so far into the school year and im actually way ahead poeple who started days before me and Im trying to get into public school again but I cant If im failing IM HATING CA

physics
A force of -9000 N is used to stop a 1500kg car traveling at 20 m/s. What braking distance is needed to bring the car to a halt?

MATH
3X-2Y=-27 7X+85=Y

Probability
At an ice cream ship, customers can order a sundae with 1 type of ice cream, 1 type of sauce, and 1 type topping. The types of ice cream are: chocolate; strawberry; vanilla The types of sauce are: caramel, strawberry, chocolate, butterscotch The types of toppings are: ...

Geometry
A certain type of cube has 2-inch edges. What is the maximum number of cubes than can be put into a box that measures 2.7 feet by 3.2 feet by 4.1 feet?

Algebra
How do I solve 5*(3x+2)=75

8th history
A direct result of the three-fifths compromise was: the political power of the South was greatly increased since they were apportioned more representatives. *northerners paid more taxes than southerners. three-fifths of the population in the South was allowed to own slaves. ...

history
The Dredd Scott decision: *declared that Congress could not prohibit slavery from a territory *struck down the Kansas-Nebraska Act *stated that a slave was property and could never be a citizen *allowed slavery in every state in the Union

us history
if i post question on here and give u the answer i picked will u tell me if its right

us history
What is an abolitionist? a runaway slave *a person who wanted slavery outlawed a slave-owner who treated his slaves fairly a person who uses violence to advance their cause i pick the one with star

us history
repealed the Missouri Compromise and authorized the residents of both territories to determine the status of slavery

us history
The Kansas-Nebraska Act: ensured that the number of free and slave states would remain equal repealed the Missouri Compromise and authorized the residents of both territories to determine the status of slavery temporarily suspended the Missouri Compromise until the Kansas ...

eth 125
I have an assignment that ask to describe an issue between Native Americans and the federal government. I found an article at indiancountrytoday that speaks of uranium mining and how it affects the water supply for over 15,000 residents. My problem: I do not know how to go ...

ETH 125
thank you sooo much! i can now finish this assignment before it is too late!

ETH 125
thank you for your response. However, I already googled and that is the only definition I found, but could not adapt incorporate that definition into the assignment.

ETH 125
What is the definition of socially compliant? I am completing an assignment that requires to categorize this statement for one of two groups or both (Christian American/ Muslim and Arab American).

Finance
3000

accounting
Exercise 9-13: Accounts receivable turnover L.O. A1 The following information is from the annual financial statements of Lucilla Company. 2009 2008 2007 Net Sales $ 262,000 $ 193,000 $ 245,000 Accounts Receivable, net (year-end) 42,700 40,500 37,200...

College Algebra
How do you solve L=2.43*9.0^0.3326 to get the wingspan of a pelican in feet?

business
operational components of planning, sourcing, making, and delivering

3rd grade
what multiplication fact can be found by using the arrays for 2 times 9 and 5 times 9

human resources
How do I do a job description for a high school librarian? Do I set it up as an outline?

english
I am doing a book report on the book my sister keeper i need to give a description of two characters in the book and also the page number i found it on ??

Chemistry
Consider the densities of the liquid substances listed. a) How will substance X, a solid, with density of 0.87 g/cm^3, behave when placed in each of the other pure liquids? b) Sketch and label a test tube containing substances A,B,C, and X. Assume that the liquids do not mix ...

Chemistry
Consider the densities of the liquid substances listed. a) How will substance X, a solid, with density of 0.87 g/cm^3, behave when placed in each of the other pure liquids? b) Sketch and label a test tube containing substances A,B,C, and X. Assume that the liquids do not mix ...

com 220
I need to find more information on why people need life insurance

foreign language
can i learn two languages at once?

english
is texting bad for my grammar?

science
how do scientists use measuremnets?

social studies
oh thank you that helped alot!

social studies
is there any other website?

social studies
whats a site that i can get articles about prehistoric humans?

science
what is the si base unit for density, liquid, and rectangular solid?

science
i was already on that site it didn't help

science
i did. those were two diff questions

science
ok my summer homework is to explain how the si system is used in the scienetific community. HELP!

science
how do scientists use the si system?

math
a machine can fill a 2 liter bottle in 0.5 second and move the next bottle in place in 0.1 second how many 2 liter can be filed by the machine in 2 hours

Physics
Three ropes (X,Y and Z) made of different materials are attached in a linear fashion. Based on the following observations, classify ropes X,Y, and Z as fast, intermediate or slow media. -a negative pulse transmitted into X is inverted upon reflection and is transmitted into Y ...

Physics
but do i do sperate equations for both water and silver or do i do it as a combined equation. if its combined do i combine the masses and he heat capacity? i'm so confused

Physics
a 500g piece of silver at 150 degrees celsuis is submerged in 1000g of water at 5 degrees celsuis to be cooled. determine the final temperature of the silver and water given. Cwater=4.18 x 10^3 J/kg.C Csilver = 2.4 x 10^2 J/kg.C

Physics...not sure what formula to use
A 2.0kg bag is held by a string to the ceiling. A 10g bullet travelling at 200m/s strikes the stationary bag. The height of the bag after the collision is 10cm, assuming there is no friction, determine the speed, in m/s, of the bag after the collision.

College Algebra
The value of the expression (4220 + 0.25 (x - 30,650) is the 2006 federal income tax for a single taxpayer with taxable income of x dollars, where x is over $30,650 but not over $74,200. Simplify the expression; Find the amount of tax for a single taxpayer with taxable income ...

Physics
determine the distance from earths centre where the force of gravity acting on a space probe is only 11% of the force acting on the same probe at earths surface. Express your answer in terms of earths radius, rE

ALGEBRA
sorry i meant (x+3)(x-10)

ALGEBRA
not sure if this is what u mean but (x+3)(x-7)=0

Math
f(x)= 2(x-1)^2-2 (complete the square to get vertex form f(x)=a(x-h)+k) Vertex is (h,k) so (1,-2) Axis of sym = 1 x intercepts = (0,0) and (2,0) y intercept = 0 parabola opens up

Math
well there is one thousand millilitres in a litre so multiply 2.3 by 1000

Physics
well my teacher cant teach so i dont. and i used the formula but i got a different answer then the back of the book. i don't get what im doing wrong. g=GMe/(radius Earth+altitude)^2 g=(6.67x10*-11Nm^2/kg^2)x(5.98x10*24kg)/ (6.38X10*6m+0.22m)^2 g= (3.99x10*14Nm^2/kg)/(4....

Physics
well my teacher cant teach so i dont. and i used the formula but i got a different answer then the back of the book. i don't get what im doing wrong. g=GMe/(radius Earth+altitude)^2 g=(6.67x10*-11Nm^2/kg^2)x(5.98x10*24kg)/ (6.38X10*6m+0.22m)^2 g= (3.99x10*14Nm^2/kg)/(4....

Physics
k well i don't know what Me stands for or what the altitude is or how to find it.

Physics
What is the gravitational field strength at a place 220km above Earth's surface, the altitude of many piloted space flights?

Accouting
what four items may be omitted when listing figures on columnar paper?

pre-algebra
I need to figure out how to convert 11inches to the actual length of 550 to scale. Please help 550 what? miles? feet? inches? If you want 550 of some length unit to be represented as 11 inches on a map or scale drawing, divide all lengths by 50.

Drama Question
A prop-box is a/an: effective strategy for enhancing drama activities. (or) tool for evaluating activities Check this site for your answer. http://www.angelfire.com/dc/childsplay/Prop_Box_Ideas.htm Thank you for using the Jiskha Homework Help Forum. A prop-box is only limited ...

Drama Question
Creative drama offers a means for cooperative learning and teamwork through which? 1. shared experiences 2. creative illustrations 3. building language skills 4. improvised facial expressions I am thinking "shared experiences" offer a means of cooperative learning ...

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