Saturday

October 10, 2015
Total # Posts: 1,329

**math**

3 Normally distributed Test scores for a police exam is a normal distribution TEST,150,20. 5) Find the probability that a randomly chosen candidate’s score is greater than 165. 6) Find the cut-off score for the top 10% of test-takers.
*October 7, 2011*

**math**

A gallup poll of 1236 adults showed that 14% believe that bad luck follows if your path is crossed by a black cat, so n=1236 and p=0.14 1.Find the mean? 2.Find the standard deviation? 3.Find the ND (np > 5 and nq > 5 ?) 4.Find the min, max of usual values by RROT
*September 28, 2011*

**Math**

If 2t + 3 = -9, what is the value of -3t - 7?
*September 27, 2011*

**science**

thank you so much for helping me
*September 23, 2011*

**science**

72 pulse beats per a minute
*September 23, 2011*

**science**

if you count 12 pulse beats in 10 s what is the pulse rate in beats per minute
*September 23, 2011*

**science**

thank you so much :)
*September 23, 2011*

**science**

120cm/a day
*September 23, 2011*

**science**

thank you so much
*September 23, 2011*

**science**

i got 3 cm
*September 23, 2011*

**science**

thanks
*September 23, 2011*

**science**

thank you i happy now i got my extra credit and home work done thanks for all the help from you :) :) :) :)
*September 23, 2011*

**science**

1.68km/for minutes
*September 23, 2011*

**science**

180
*September 23, 2011*

**science**

i got 1hour 13 min and 1.68 for km
*September 23, 2011*

**statistcs**

Bao Xishun is the world's tallest man with a hieght of 92.95 in. (or 7ft, 8.96 in.). men have hieghts witha mean of 69.6in and a standard deviation of 2.8 in. 1) convert Boa's height to a z score 2) does Boa's height meet the criterion of being unusual by ...
*September 19, 2011*

**statistcs**

The authors generac generator produces voltage amounts with a mean of 125.6 volts and a standard deviation of 0.3 volt. using the Chebyshev's theorem, what do we know about the percentage of voltage amounts that are within 3 standard deviations of the mean? what are the ...
*September 19, 2011*

**statistics**

the authors's generac generator produces voltage amounts with a mean of 125.0 volts and a standard deviation of 0.3 volts, and the voltages have a bell-shaped distribution. using the empiral rule, what is the percentage of voltage amounts between 124.4 and 125.6 volts? ...
*September 19, 2011*

**statistic**

Chebyshev's thereon- the author's generac produces voltage amounts with a mean of 125.0 volts and a standard deviation of 0.3 volt. using chebyshev's theorem,what do we know about the percentage of voltage amounts that are within 3 standard deviations of the mean? ...
*September 18, 2011*

**Geography**

thanks
*September 15, 2011*

**Geography**

False
*September 15, 2011*

**Geography**

True or False: Continentality does affect climate of a region.
*September 15, 2011*

**statistics**

Use x2prk formula to find the percentile rank of 84
*September 14, 2011*

**statistics**

Sketch the boxplot for mpuls and label it with the 5-number summary
*September 14, 2011*

**statistics**

Determine the quartiles q1, Med,q3, for mpuls
*September 14, 2011*

**statistics**

Determine the cvars of the entrance exams sat, 1518,325 and act 21.1,4.8
*September 14, 2011*

**statistics**

Use x2prk formula to find the percentile rank of 84
*September 14, 2011*

**statistics**

Sketch the boxplot for mould,and label it with the 5-number summary
*September 14, 2011*

**statistics**

Determine the quartiles q1,Med,q3 for mpuls
*September 14, 2011*

**statistics**

Determine the cvars of the entrance exams sat,1518,325 and act,21.1,4.8
*September 14, 2011*

**Algebra**

a sprinter ran 100-m dash in 9.92s. What was his soeed in feet per second
*September 11, 2011*

**Statistics**

Given the list 10,7,5,3,-6 find by hand, mean,meadian, midrange, mode(s), range, popvar, and sample standard deviation. (seven problems)
*September 10, 2011*

**chemistry**

how many grams of MgCl2 would you dissolve in 650mls of water to make a 0.45M solution?
*September 8, 2011*

**biology**

evidence for a reducing atmosphere
*September 8, 2011*

**math**

Using the terms factor, divisor, multiple, product, and divisible by, write as many statements as you can about the number sentence 4x7=28.
*September 7, 2011*

**math**

A polynomial that has zeros at 1, 2, and 3 with multiplicities of 1, 2, and 3 respectively. -Represent a function that satisfies the given conditions by an equation. Leave in factored form.
*August 30, 2011*

**math**

You should convert all of them to the same unit. I chose to use pecentages. California is already written as a percent 4.25% Montana: 1. Convert to a decimal by dividing 1 by 30 .0333. . . 2. Convert the decimal to a percent by moving the decimal two places to the right 3.3% ...
*August 29, 2011*

**math**

(10*8)*3 =10*(8*3) Associative Property = 10*24 =240 8*(3*5) = 8*(5*3) Commutative Property =(8*5)*3 Associative Property =40*3 =120 (36 + 42) + 24 = (42 + 36) + 24 Commutative = 42 + (36 + 24) Associative = 42 + 60 = 102
*August 29, 2011*

**algebra**

rounding to the first decimal place would be 1.1
*August 29, 2011*

**math**

My brother and I walk the same route to school every day. My brother takes 40 minutes to get to school and I take 30 minutes. Today, my brother left 8 minutes before I did. How long will it take me to catch up with him?
*August 29, 2011*

**algebra**

Remember to use the order of operations 8-4(-1)^2/2 8-4(1)/2 8-4/2 8-2 6
*August 29, 2011*

**algebra**

2(15) + 7(3)/30 30 + 21/30 51/30 (simplify by dividing by 3) 17/10
*August 29, 2011*

**physics**

A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 29.0 m. Next, the student stands at the edge of the pool and uses a ...
*August 25, 2011*

**Physics II**

Find the work done in pulling a 120 gram box in an incline plane, 150 cm long and 90 cm high if the coefficient of friction is 0.25.
*August 25, 2011*

**math**

Use the formula nCr to solve Of the 100 people in the U.S. senate, 18 served on the Foreign relations Committee. How many ways are there to select Senate members for this committee (assuming party affiliation is not a factor in the selection)
*August 23, 2011*

**math**

Solve by the method of choice A book club offers a choice of 8 books from a list of 40. in how many ways can a member make a selection?
*August 23, 2011*

**m ath**

Use the formula nCr to solve Of the 100 people in the U.S. senate, 18 served on the Foreign relations Committee. How many ways are there to select Senate members for this committee (assuming party affiliation is not a factor in the selection)
*August 23, 2011*

**math**

using the fundamental counting principle with three or more groups of items There are three highways from city A to city B, two highways from city B to city C,and four highways from city c to city D. How many different highway routes are there from city A to city D?
*August 22, 2011*

**math**

Evaluate each factorial expression. 106! 104!
*August 22, 2011*

**math**

using the fundamental counting principle with three or more groups of items A pizza can be ordered with three choices of size (small, medium, or large), four choices of crust (thin,thick,crispy, or regular, and six choices of toppings (ground beef, sausage, pepperoni, bacon, ...
*August 22, 2011*

**math**

use the formula nPr to solve how many arrangements can be made using four of the letters of the word COMBINE if no letter is to be used more than once?
*August 22, 2011*

**math**

Evaluate each factorial expression. 106! 104!
*August 22, 2011*

**math**

using the fundamental counting principle with three or more groups of items There are three highways from city A to city B, two highways from city B to city C,and four highways from city c to city D. How many different highway routes are there from city A to city D?
*August 22, 2011*

**math**

using the fundamental counting principle with three or more groups of items A pizza can be ordered with three choices of size (small, medium, or large), four choices of crust (thin,thick,crispy, or regular, and six choices of toppings (ground beef, sausage, pepperoni, bacon, ...
*August 22, 2011*

**math**

Determine the regular payment amount, rounded to the nearest dollar. The price of a home is $160,000. the bank requires a 15% down payment. The buyer is offered two mortgage options: 1 year fixed at 8% or 30-year fixed at 8%. Calculate the amount of interest paid for each ...
*August 17, 2011*

**math**

Determine the regular payment amount, rounded to the nearest dollar. The price of a home is $160,000. the bank requires a 15% down payment. The buyer is offered two mortgage options: 1 year fixed at 8% or 30-year fixed at 8%. Calculate the amount of interest paid for each ...
*August 17, 2011*

**math**

Determine the regular payment amount, rounded to the nearest dollar. The price of a home is $160,000. the bank requires a 15% down payment. The buyer is offered two mortgage options: 1 year fixed at 8% or 30-year fixed at 8%. Calculate the amount of interest paid for each ...
*August 15, 2011*

**math**

Determine the periodic deposit. round to the nearest dollar. how much of the financial goal comes from deposits and how much comes from interest. Periodic deposit %? at the end of each months Rate 8.25% compounded monthly Time 40 years Financial goal $1,500,000
*August 15, 2011*

**math**

find the interest rounded to the nearest dollar periodic deposit $60 at the end of each month Rate 5% compounded monthly Time 30 years
*August 15, 2011*

**math**

Using the present value formula you deposit $12,000 in an account that pays 6.5% interest compounded quarterly. A. find the future value after one year? B. Use the future value formula for simple interest to determine the effective annual yield?
*August 14, 2011*

**math**

a=16,00, r=11.5%, t=5 years determine the present value, p, you must invest to have the future value, a, at simple interest rate r after time t. round uo to nearest cent
*August 14, 2011*

**math**

its really easy... just find the area of all the wall except for the floor and ceiling. and subtract that by 140ft
*August 12, 2011*

**math**

886 sp. ft.
*August 12, 2011*

**English**

I really need help finding all the grammatical errors in the passage below. Look for commas, question marks, capitailzation and colons, semi-colons, commonly misused words. I did most of them I just need help in finishing. Students also realize that a traditional college ...
*August 6, 2011*

**Statics**

Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that a random sample of 41 male ...
*July 19, 2011*

**Help!!**

A catcher stops 92 mi/h pitch in his glove bring it to rest in 0.15 m. If the force exerted by the catcher is 803N, what is the mass of the ball?
*July 17, 2011*

**Probability**

if two fair dice are rolled, what is the probablity that the total showing is even or less than seven?
*July 11, 2011*

**human services**

what is integrity; sexual harassment; human differences; and the legal definition of insanity in the courtrooms?
*July 5, 2011*

**Algebra**

A chess board has 64 squares. If pieces occupy 19 squares, how many squares are unoccupied?
*June 12, 2011*

**need help for medical coding 1 **

can anybody tell me if they received an examination booklet of medical coding 1, exam 1, lessons 1-3 and medical coding 1, exam 2, lessons 4-6 from penn foster college. because i didn't received any one of them i only received the final examination booklet. i was wondering...
*June 5, 2011*

**math**

The base of a triangle is 6 cm greater than twice the height.The area is 28 cm2.Find the height and the base.
*June 2, 2011*

**business**

2. Individual Assignment: Functions of Management Paper • Prepare a 700- to 1,050-word paper in which you define the four functions of management (planning, organizing, leading, and controlling). In your paper, include an explanation of how each function relates to your ...
*May 17, 2011*

**Algebra 2**

Identifying Conics. Put equation in standard form and graph. 9x^2-4y^2-90x+189=0
*May 12, 2011*

**Psychology**

nevermind, I got it
*May 10, 2011*

**UOP**

Nevermind, I got it
*May 10, 2011*

**UOP**

I do not want answers! The question is: Evaluate the effectiveness of self-determination theory in explaining various behaviors. My question is: Exactly what is this asking for and how would I start the response? Is it asking for the behaviors themselves or how the behaviors ...
*May 10, 2011*

**Literature**

What are some literary devices used in the novel Journey to the Center of the Earth?
*May 10, 2011*

**Algebra**

plug in the equation y=-16^2+47X+3 into a graphing calculator under the Y= button, hit graph, and where ever the graph touches the X axis, is your answer.
*May 2, 2011*

**AP World History**

what are some differences in racial ideologies in N. America and Latin America between 1500 and 1830
*May 2, 2011*

**Chemistry**

1How would each of the following affect the accuracy of the calculated neutralizing power of antaid (too high, too low, no effect) explain a)The actacid tablet was not cut exactly in half before weighing b)The solution mixture of reacted antacid and excess HCL spattered out of...
*April 26, 2011*

**math**

5/12 ____________ x/3+x/2
*April 20, 2011*

**chem**

i don't know how to solve this. looked through all my notes but i'm not sure what kind of formula i am to use or if i even need one! please help me to understand the theory behind this: "calculate the work need to make room for the products in the combustion of S8...
*April 17, 2011*

**chemistry**

i don't know how to solve this. looked through all my notes but i'm not sure what kind of formula i am to use or if i even need one! please help me to understand the theory behind this: "calculate the work need to make room for the products in the combustion of S8...
*April 17, 2011*

**science**

thank you, i tried to google the answer myself, but i couldn't find anything. I hope someone can actually help me to understand it, i don't just want to know the answer, i'd like to know the theory behind it too =)
*April 16, 2011*

**science**

i don't know how to solve this. looked through all my note but i'm not sure what kind of formula i am to use or if i even need one! please help me to understand this: "calculate the work need to make room for the products in the combustion of S8(s) to SO2(g) at 1 ...
*April 16, 2011*

**chem**

i don't know how to solve this. looked through all my note but i'm not sure what kind of formula i am to use or if i even need one! please help me to understand this: "calculate the work need to make room for the products in the combustion of S8(s) to SO2(g) at 1 ...
*April 16, 2011*

**chem**

please help me? :) topic: standard enthalpies of formation "Calculate ΔHf° of octane, C8H18(l), given the entalpy of combustion of octane to CO2(g) and H2O(l) is -5471kJ/mol. The standard enthalpies of formation ofCO2 and H2O are given: CO2(g)ΔHf°=-393....
*April 16, 2011*

**chem**

oh! i get it now. q mug + q coffee = 0 after typing many numbers on my calculator i got the final temperature to equal 84.65 degrees C. I'm sure this is right, thank you very much :)
*April 16, 2011*

**chem**

topic: thermochemistry i'm not really sure how to go about his question. i'm not sure with formula to use. (perhaps Cspht= q/(m x deltaT)?)can you please help me step by step or give me a hint and i'll post my answer, pretty please? "250g of hot coffee at 95 ...
*April 16, 2011*

**chem- acids and bases**

you're the best, thank you so much!
*April 16, 2011*

**chem- acids and bases**

correction for typo: "- how do i find the concentration of HNO2, is it 0.20M? " i meant NO2^- instead of HNO2
*April 16, 2011*

**chem- acids and bases**

sorry to take up your time again, acids and bases just really confuse me, i'd really appreciate your help again. "What is the pH at the end point for the titration of 0.20M HNO2 by 0.20M NaOH? Ka nitrous acid= 4.5 x 10^-4." this is what i do know: - end point, so...
*April 16, 2011*

**chem**

thanks again!
*April 16, 2011*

**chem**

what will the pH at the end point of 0.0812M Ba(OH)2 be when titrated with HCl? a) 9.0 b) 8.0 c) 12.2 d) 7.0 e) 6.0 for this question, can i just assume the pH will be 7 since it's s titration with a strong base and a strong acid? (or do i have to do calculations?) I'm...
*April 16, 2011*

**chem**

oh! i get it now, thank you very much =)
*April 16, 2011*

**chem**

what is the pH change after the addition of 10mL of 1.0M sodium hydroxide to 90mL of a 1.0M NH3/1.0M NH4^+ buffer? Kb ammonia= 1.8 x 10^-5 i found the pH for the original buffer to be 9.255, but i'm not sure how to go about the rest of the question, please, someone help me.
*April 16, 2011*

**math**

Mr. Forrester has a swimming pool that measures 3 1/3 yards by 8 yards. If the deck around the pool is 2 2/3 yards wide, what is the outside perimeter of the deck?
*April 14, 2011*

**College Physics**

nvm I got this one. but thank you! :]
*April 14, 2011*