Wednesday
October 1, 2014

Posts by dean


Total # Posts: 163

math
Thank you
June 7, 2014

math
Jake has $2.80 in dimes and quarters. he has 7 more dimes than quarters. how many quarters does he have?
June 7, 2014

physics
A block with mass m = 24.0 kg slides down an inclined plane of slope angle 41.4 ° with a constant velocity. It is then projected up the same plane with an initial speed 3.80 m/s. How far up the incline will the block move before coming to rest?
February 22, 2014

physics
Buffy is rolling along in her 12.7 kg wagon at 3.6 m/s (in the positive direction) when she jumps off the back. She continues to move forward at 1.2 m/s relative to the ground. This causes her wagon to go speeding forward at 9.51 m/s relative to the ground. How much does Buffy...
February 9, 2014

physics
A block of wood with a mass of 4.62 kg sits on the edge of a table that is 0.99 m tall. A bullet with a mass of 70.5 g traveling with a speed of 450 m/s is shot into the block and is lodged in it. Assuming that no energy is lost to friction, how far from the table will the ...
February 9, 2014

physics
A balistic pendulum is made from a block of wood with a mass of 2.78 kg. A bullet with a mass of 39 g is shot into the block causing it to rise 29.1 cm. What was the speed of the bullet?
February 9, 2014

Physics
An electron is released between two metal plates 40.0mm apart experiences an acceleration of 1x10^12m/s^2. Determine the potential difference across the plates.
December 16, 2013

Surveying
I am looking for horizontal distance between 2 points. My slope distance is 153.97' and a vertical distance of 91degrees 32minutes 45seconds.
September 21, 2013

statistics
a random sample from the population of registered voters in california is to be taken and then surveyed about an upcoming election. What sample size should be used to guarantee a sampling error of 3% or less when estimating p at the 95% confidence level? is this the answer......
June 29, 2013

statistics
assume you have a data set from a normally distributed random variable. answer the following: will the random variable be discrete, continuous, or neither? How do you know? I believe its continuous but cant explain why will the data be qualitative or quantitative? How do you ...
June 29, 2013

statistics
A woman and her son are debating about the average length of a preacher's sermons on Sunday morning. Despite the mother's arguments, the son thinks that the sermons are more than twenty minutes. For one year, he has randomly selected 12 Sundays and found an average ...
June 19, 2013

statistics
What sample size is required from a very large population to estimate a population proportion within 0.05 with 95% confidence? Don't assume any particular value for p. A. 271 B. 38 C. 385 D. 767
June 19, 2013

math
2) binomial: n=6 p=0.48; x=6 using applet:1.22306% 1-1.22306%=98%
May 19, 2013

math
1)average=4; SD=0.2;sample =100 the expected total = 100*4=400 SE of total= sqrt(100)*0.2=2 (100*3.999-400)/2=-0.05 using applet:-5...-0.05 approximately 48%
May 19, 2013

math
1)average=4; SD=0.2;sample =100 the expected total = 100*4=400 SE of total= sqrt(100)*0.2=2 (100*3.999-400)/2=-0.05 using applet:-5...0.05 approximately 48%
May 19, 2013

math
how to go by doing a personal cash flow statement is it like the regular budgetfor your house.
April 12, 2013

Algebra
The volume of it is 1125 cubic inches, the length is 18 inches, and the width is 15 inches. Can you also show me how to do because I have a test on Friday! Thanks!!! :)
March 5, 2013

Chem
in the reaction NO3+CaCl2=2AgCl+Ca(NO3)2, how many grams of excess will remain when 20 grams of AgNO3 are reacted with 15 grams of CaCl2
February 25, 2013

Math
I think it would be C but I'm not sure.....
February 25, 2013

math
how many ways can you arrange three banks on a shelf
August 13, 2012

finance
what is the future value of $2,000 in a bank account for 6 years at 4 percent compounded bimonthly
August 1, 2012

Discreet MAth
Wow hes actually right
May 2, 2012

stat
Did anyone answer this?
May 1, 2012

Accounting
Spencer Company manufactures and sells three products. Relevant per unit data concerning each product are given below. Product A B C Selling price $9 $12 $14 Variable costs and expenses $3 $9.50 $12 Machine hours to produce 2 1 2 Compute the contribution margin per unit of the...
April 30, 2012

Accounting
Imagen Arquitectonica of Tijuana, Mexico is contemplating a major change in its cost structure. Currently, all of its drafting work is performed by skilled draftsmen. Alfredo Ayala, Imagen's owner, is considering replacing the draftsmen with a computerized drafting system...
April 30, 2012

Accounting
E6-9 (a,b) Tiger Golf Accessories sells golf shoes, gloves, and a laser-guided range-finder that measures distance. Shown below are unit cost and sales data. Pairs of Shoes Pairs of Gloves Range Finder Unit sales price $100 $30 $250 Unit variable costs 60 10 200 Unit ...
April 30, 2012

math
if a 1100 lb motorcycle(w/2 passengers)is doing 40mph,how long will take to come to a complete stop? this is happening with a full brake lock up.skid!in a stright line.
March 31, 2012

math
if a 1100 lb motorcycle(w/2 passengers)is doing 40mph,how long will take to come to a complete stop?
March 31, 2012

Physics
A 170 -pF capacitor is connected in series with an unknown capacitance, and as a series combination they are connected to a battery with an emf of 25.0 V. If the 170 -pF capacitor stores 135 pC of charge on its plates, what is the unknown capacitance?
March 2, 2012

calculus
We need the given interval
March 2, 2012

Algebra II
f(-1)=(-1)^2 -(-1)+1=3 g(3) =-3(3)+6=-3 3 times -3 = 9
March 2, 2012

math
f(x) = y y = 2log(base2)x =log(base2)x^2 therefore 2^y=x^2 so x = sqrt(2^y)
March 2, 2012

algebra
g(-5)=-4(-5)+3=23 f(23) = -2(23)-7 = -53 (f o g)(-5) = -53
March 2, 2012

math
a boy buy a bike for 45$ then sells it for 65$ then buys it back for 90$ then sells it agian for 125$ what percent of money did he make
January 12, 2012

calculus
Evaluate integral from -2 to 3 of 4 lxldx
December 10, 2011

stati
12. Suppose 80% of students finish high school. Of them, 50% finish college. Of them, 20% get a master’s degree. Of them, 30% get a Ph.D. (i) What percentage of students get a Ph.
November 24, 2011

statistics
Assuming that the data are normally distributed with a mean of 45 and a standard deviation of 3.25, what is the z-score for a value of 40?
October 20, 2011

french
yes it that just not sure about the spelling
June 20, 2011

algebra
Find the slope, if it exists x+5y=10
May 24, 2011

algebra
Find the slope, if it exists x+5y=10
May 23, 2011

MATH HELP HELP HELP HELP HELP BOBOBOBOBOBOBOBOBOB
Let a = 349, M = 492186. Show that gcd(a;M) = 1. Hence find the mutliplicative inverse, a^-1 mod M
May 9, 2011

Math
A company has factories located in New Jersey, Ohio, and Georgia where it manufactures handbags, shoes, and belts. How many days should the company operate each factory in order to exactly fill the order of 2150 handbags, 2300 shoes and 2500 belts? Use the information below. ...
February 22, 2011

CRIMINAL JUSTICE
Discuss the three types of management styles that are reviewed in your course materials (Scientific Management, Human Relations Management, and Systems Management). * Which style do you believe would be the most effective to use in the criminal justice system? * What are ...
February 8, 2011

math
Thank you Sue! My daughter says she thinks she has it now. I hope she does, because I am till confused. You know its true what they say, It's hard to teach an old dog new tricks. Thanks again, Dean
January 20, 2011

math
I came out with a common denominator of 72. do I just put -5/72 + 2/72 = -3/72? I haven't done Algeria in 50 years. I am very rusty.
January 20, 2011

math
how do you add a negetive and a positive faction? -5/8 + 2/9 = ?
January 20, 2011

algebra
write a linear equation to model the situation. Use unit analysis to check your model. You borrow $40 from your sister. To repay the loan, you pay her $5 a week.
January 4, 2011

8th grade
Solve 3r + 18 ¡Ü 6r
December 11, 2010

science
Actually, I really just need someone to confirm my answer. Not to confident b/c it's been a while since I've done much math. 22 ears x 700 kernels = 15,400 15,400 x 1000 = 15,400,000 /90 = 171.111 Am I close?
November 13, 2010

science
A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in 1/1000 of an acre. He determines that each ear has about 700 kernels on average. He also knows that a bushel contains about 90 000 kernels on average. ...
November 13, 2010

Human Physiology
A subject with a body weight of 60 kg was injected with 10 ml of a 1% (w/v) solution of Evans Blue. After 10 min, the blood was sampled and found to contain 0.035 mg ml^-1 of the dye. What is the subject’s plasma volume in litres?
November 8, 2010

Biology
During skeletal muscle contraction: Choose one answer. A. the A and I bands do not change length. B. cross bridges are formed between myosin and actin. C. minimal tension can be generated when the muscle is close to its normal resting length. D. the myofilaments change length...
November 7, 2010

Biology
You are given the following protein sequence: NH2-Met-Trp-Trp-Met-Trp-Met-COOH What was the sequence of the mRNA? You must write your answer 5' to 3' direction, starting with the first nucleotide of the mRNA and ending with the last nucleotide of the mRNA. DO NOT ...
November 2, 2010

Philosophy
Got it...thanks!
October 24, 2010

Philosophy
<11{4[2(12)]}> Choose the pair of words/phrases among the choices that exhibits the same logical relationship as the words/phrases in the following pair. building : blueprint (Points : 1) ship : sea cake : recipe bridge : island guitar : song
October 24, 2010

algebra
it has been found that the world record for the men's 10,000 meter run has been decreasing steadily since 1950. the record is approximately 28.7 minutes minus 0.05 times the number of years since 1950. assume the record continues to decrease in this way. predict what it ...
October 9, 2010

Calculus
A kicker is setting up for a field goal. The goal is 120 feet away and 10 feet high. The kicker can give an initial speed of 75 ft/s to the ball. What range of angles of elevation are possible to kick the ball so it passes over the goal?
October 6, 2010

Spanish
Me gusta ver el ____ de b`eisbol No puedo jugar Estoy ___ ocupado Vamos a la ___ de cumplean~os de paco help on these last three please?
September 12, 2010

Algebra (repost)
nevermind sorry for waste of space lol
May 10, 2010

Algebra (repost)
Can you help me on this problem as well? (or anyone.) Solve each inequality and check your solution. h - > -7 4 (bumping)
May 10, 2010

English-please help
First of all, you spell sentence, sentence, with a c instead of an s. :)
May 10, 2010

Algebra
Can you help me on this problem as well? (or anyone.) Solve each inequality and check your solution. h - > -7 4
May 10, 2010

Algebra
"Do the two inequalities have the same solutions? Wriet yes or no. -5x > 0 x > 0 Solve each inequality and ch eck your solution. 9x > 81 help please? -thanks
May 10, 2010

government
what is Third way urbanism?
May 1, 2010

philosophy
What makes pity the such a horrible emotion? How is it counter to Nietzsche conception of the good? Please I dont know where to start!!!!!
April 17, 2010

Philosophy
What are the differences between phenomenal and noumenal worlds?
April 16, 2010

Physics
a) A microphone has an area of 5cm^2. It recieves during a 4.0 s time period a sound energy of 2.0*10^-11 J. What is the intensity of the sound? b) using intensity from a) what is the variation in pressure in the sound wave, delta P ? Use T=293 K and density of air=1.2kg/m^3
February 21, 2010

Pre-Algebra
Directions: Find the missing measure of each angle How do I do this? It's a triangle, angle one 2x + 15 x 45degrees
February 3, 2010

French
Au printemps.
January 14, 2010

Pre-Algebra
Please help me. Thanks It's Pythagorean Theorem: A boot leaves port and travels 18 miles north and 15 miles east. How far from port is the boat? I have drawn a picture, 15² + 18² = c² ²= squared. Thanks... meh please someone help mewith this, thanks.
January 14, 2010

Pre-Algebra
Thanks Reiny.
January 5, 2010

Pre-Algebra
I got 11 and 2/3rds, correct?
January 5, 2010

Pre-Algebra
A 9 foot ladder leans against a building at a point 7 feet above the ground. At what height would a 15 foot ladder touch the building if both ladders for the same angle with the ground? Propotion? But I just get a decimal...
January 5, 2010

Pre-Algebra
Nevermind, it says twice as long/wide.
January 5, 2010

Pre-Algebra
It says twice as wide, not four times..
January 5, 2010

Pre-Algebra
Would it be $800?
January 5, 2010

Pre-Algebra
Well, this problem is really stumping me, so here it is. Directions: In each problem, first draw a picture of the situation to the right of the problem. Then decide whether the problem involves measuring length or area growth to help you answer the questions. 1. It costs Mrs. ...
January 5, 2010

life science
how do fungi liv e without water and in extreme cold?
December 17, 2009

how children learn
which of the following questions ia a thinker/doer most likely to ask?
December 14, 2009

skills for the effective teacher aide
Acc to the SMCR model, problems in communication can arise when the speaker fails to do what?
December 14, 2009

math,
3/4 is= to something over 12
November 18, 2009

math
Theres 26 black cards in a deck of cards. Half of the deck of cards will remain red/black. 1/2 of the cards are shown as black cards.
October 27, 2009

math
Well, there is 52 cards, and there is only 4 aces, aswell as 9's. What is the probability that you will get those cards?
October 27, 2009

Pre-Algebra
Well, sorry -.- Thanks for the answer, lol. I thought it would be 28.
October 27, 2009

Pre-Algebra
Can I have someone check this please? I wouldn't want to do the whole page, then find out I had done them all wrong. :( [Percents of Change] A $100 digital watch is now $72 Decrease, 72/100 = negative percent. 100/72.00 = .72 .72 - 1 = 30%? Thanks. 30% is my final answer, ...
October 27, 2009

math213
Chocolate + singles Chocolate + doubles Chocolate + triples Vanilla + singles Vanilla + doubles Vanilla + triples Strawberry + singles Strawberry + doubles Strawberry + triples There are a total of how many different ways? 3+3+3=? Find it, and thats your final answer.
October 27, 2009

math
Are you needing to reduce this fraction? Divide?
October 27, 2009

writing
Please tell us what you need help on.
October 27, 2009

eng
Use your imagination, :) Education can help succeed you in life, by making new friends, getting a job (career) in life. You need education to survive in life. College is the main thing about education, it's about what you've learned from the years you have been educated.
October 27, 2009

Pre-Algebra
Could you explain why I got that one wrong? Also, 66 1/2% of $24.00, how do I do these problems? :\ Thanks, by the way for checking them :)
October 25, 2009

Pre-Algebra
Is this correct? If I'm mistaken, please correct it for me, and show me how. Thanks. [Fractions, Decimals, and Percents.] 33 & 1/3 of $90 = $21.00 100% of 500 = $500 1% of 500 = $5.00 50% of 70 = $35.00 100% of 70 = $70.00 Thanks, you don't have to tell me all of then...
October 25, 2009

Pre-Algebra
I don't know how to do these problems. 33 and 1/3% of $90 66 and 2/3% of $90 199% of 70
October 25, 2009

**Help **
Anyone can help you here.
October 25, 2009

Physics
The figure below shows a standard man intending to do reverse curls in a gym (standing up with Tension up, weight of arm down and force down). He holds his arms straight, using an overhand grip to hold the bar. If the mass of the bar is given as 146 kg, what is the tension in ...
October 2, 2009

biology
In geometry a double helix (plural helices) typically consists of two congruent helices with the same axis, differing by a translation along the axis, which may or may not be half-way. "wikipedia"
September 29, 2009

MATHS
c stands for cents?
September 29, 2009

MATHS
What grade are you in?
September 29, 2009

MATHS
Are you in algebra using variables 'c'?
September 29, 2009

C Programming
This is a homework helping site, we can't help you with your programming issues, I believe, discuss that with the founder of that program. I would help you with this, but Its too tiring. (coding) float temp, CtoF, FtoC; char choic; char choice; char answer[10]; char ...
September 29, 2009

pre-algebra
11-14=b 15-6=b 6-15=b. Do the problems, :)
September 29, 2009

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