Jana
Newest questions and responses by Jana
Algebra
A scuba diver's vertical position in relation to the surface of the water changes by 90 Ft in 3 min. What is the average change in the Diver's vertical position each minute?
asked on July 9, 2018 
Chemistry
Can someone clarify where I'm going wrong with this? Kw for pure water is 1.2 x 1015 at 5°C. The pH of pure water at 5°C? I thought Kw=[H3O][OH]... I've tried a few different things, but none seem to work. Thanks!
asked on February 21, 2017 
math
I am a two digit number my ones digit is the double of my tens digit two of my divisor are 8and 12
asked on November 11, 2016 
Chemistry
describe the preparation of 12 mL of a 0.050 M solution of each of the halogens, using the reactions in the preceding question. Available to you are solid Ca(OCl)2; 0.20 M solutions of NaCl, NaBr, NaBrO3, and CuSO4; a 0.40 M solution of NaI; a 0.50 M
asked on October 25, 2016 
Physics
Circular motion: Not sure if I did this right. I need to find the speed that a spaceship needs to rotate to create an artificial gravity of 9.8m/s^2 (at feet) r=10m a=V^2/r 9.8=v^2/r root of(9.8*10)=v v=9.9m/s is this close?
asked on October 16, 2016 
Science
How do humans grow crops on land that would naturally be either too dry or too wet ? Explain
asked on October 9, 2016 
Physics
I don't need somone to fully answer this questions, but I need help as to where to get started. Occasionally a severe leg break requires traction to help the bones heal properly. While in traction, the leg is held stationary in the air and is under tension
asked on October 2, 2016 
chemistry
Paper pulp is sold on the basis that it contains 12% moisture; if the moisture exceeds this value, the purchaser can deduct any charges for the excess moisture and also deduct for the freight costs of the excess moisture. A shipment of pulp became wet and
asked on September 24, 2016 
Math (precelc 12)
Given (f+g)(x)=103x and (fg)(x)=5x14) find f(x) and g(x). So I was told to do: (f+g)(fg)=2f 2f=(103x)+(5x14)=2x4 f(x)=x2 For g(x) I tried: 2g=(103x)+(5x14)=2x4 g(x)=x+2 is that correct?
asked on June 24, 2016 
Math (precelc 12)
Given (f+g)(x)=103x and (fg)(x)=5x14, find f(x) and g(x). I'm not sure how to go about this.
asked on June 23, 2016 
Math (precelc 12)
A true false test has 15 questions. How many answer keys are possible of the answer to 6 of the questions is false and 9 are true? I think this is a permutation and not a combination because each answer key would be different depending on the order of
asked on June 21, 2016 
Math (precelc 12)
In how many ways can a school president, a vicepresident, and secretary be chosen from 21 students? I'm not sure to find this answer since there is no order in which they are chosen.
asked on June 20, 2016 
Math (precelc 12)
BC Place has 16 gates. In how many ways can you enter and leave the stadium by any gate? I'm not sure if this this is a combination or a permutation. I think it's a permutation and my answer is 256 ways. Thanks for the help.
asked on June 20, 2016 
Physics (Normal force and static coefficient)
Calculate the normal force for a 2 kg object at rest on an inclined surface, α=42 degrees How much is the static coefficient of friction between the surface and the block  My work: N = mg*cos(θ) N = (2kg)(9.8n/m^2)cos(42) = 14.57 N F = µsN µs = F/N
asked on June 18, 2016 
Math (precelc 12)
I need to prove this identity: cot(x)+tan(x)=csc(x)sec(x) I get as adding them together, but then I get stuck.
asked on June 17, 2016 
Math (precelc 12)
I'm not sure how to get the final answer for this question I get stuck halfway thru. Simplify using sum and difference identities: cos((3pi/2)x) I think the answer is supposed to be sin(x) Thanks!
asked on June 17, 2016 
Math (precelc 12)
I'm not sure how to solve this equation algebraically: 38=20sin((2pi(t))/36)+22 I know the answer should be about 5.3 since I graphed it. I can get as far as removing 22 from the right and then removing 20 from the right by dividing by 20. To get
asked on June 11, 2016 
Math (precelc 12)
Write an expression for the xvalues where the the maximum in the expression occurs: y=6cos((2pi/14)x)2 I know that the maximum occurs every 14 units if you start at 0,0. I'm stuck after that.
asked on June 10, 2016 
Math (precelc 12)
Write the expression as a single logarithm: 3log(a)log(b)(1/2)log(c) I want to check my answer. I got log(a^3/bc^(1/2))
asked on May 30, 2016 
Math (precelc 12)
Find x: 2(5)^x=3^(x+1) I'm not sure what to do with the 2. I think I need to write the equation as log5^2x=log3^(x+1), but I don't know. Thanks
asked on May 29, 2016 
Math (precelc 12)
Factor 2x^462x^2+60x I get: 2x(x^331x+30) 2x(x30)(x^21) 2x(x30)(x1)(x+1) But that's wrong. It should be (I think): 2x(x1)(x5)(x+6) Please show me where I went wrong.
asked on May 22, 2016 
Math (precelc 12)
Solve this algebraically for the exact values (Meaning find the xintercepts): (1/x)=x/(3x+18) I'm not sure what to write as the common denominator. I thought it was: 4x+18 because (3x+x+18)=(4x+18), but I'm not sure what to do from there. Thanks!
asked on May 17, 2016 
Chemistry
1. Before the Industrial Revolution, the concentration of CO2 in Earth’s atmosphere was about 275 ppm. Considering the effect of CO2 only, calculate the effect that the increase in CO2 has had on the pH of precipitation
asked on April 30, 2016 
Trigonometry
If the terminal side of angle theta passes through point (3, 4), what is the valuse of sec theta? 1) 5/3 2) 5/3 3)5/4 4)5/4
asked on April 17, 2016 
Biology
I'm going as this question again as it seems to far down the list to be answered now. Sorry if this is considered spam.
asked on March 30, 2016 
Biology
We are learning about proteins and their structure, but one thing is confusing me. At what structural point is something considered a protein? Is a protein formed after two amino acids synthesis, or is a protein the whole structure (all four levels) put
asked on March 30, 2016 
math
the normal line to the curve y=f(x)=2x^2 at a point in the first quadrant passes through the point (0,3/4). find an equation of this normal line
asked on March 2, 2016 
Calculus
Which of the following integrals cannot be evaluated using a simple substitution? the integral of the square root of the quantity x minus 1, dx the integral of the quotient of 1 and the square root of the quantity 1 minus x squared, dx the integral of the
asked on February 19, 2016 
math
R,O,C,A are the midpoints of the sides of the rhombus DJSB. if DJ= 16 sq rt of 2 cm and d=120 degrees, what is the perimeter of ROCA?
asked on January 23, 2016 
English
what is a minor transtion of a text?
asked on June 24, 2015 
English 9
. Read the following line from Romeo’s monologue in Act II, Scene 2 of Romeo and Juliet, where Shakespeare employs personification: Arise, fair sun, and kill the envious moon, Who is already sick and pale with grief, That thou her maid art far more fair
asked on March 13, 2015 
Creative Title Help
What would be a creative title for an essay paper over the causes of wildfires?
asked on October 12, 2014 
English
For vocabulary workshop, Unit 11 # 19. Her ability to _______ the words and gestures of prominent Americans makes her an excellent comic impressionist. Is the answer: parody ???
asked on March 2, 2014 
Accounting
1. On July 1, 2010, Harris Co. issued 6,000 bonds at $1,000 each. The bonds paid interest semiannually at 5%. The bonds had a term of 20 years. At the time of issuance, the market rate of interest was 7%. Harris uses the effective interest rate method to
asked on December 27, 2013 
math
The ratio of apples to oranges at a fruit stand is 4 to 5. There are 60 oranges at the stand. How many apples are at the fruit stand?
asked on November 21, 2013 
Statistics
In a survey of 1233 people, 917 people said they voted in a recent presidential election. Voting records showed that 72% of eligible voters actually did vote. Given that 72% of eligible voters actually did vote, find the probability that among 1233
asked on June 15, 2013 
Statistics
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 140 lb and 181 lb. The new population of pilots has normally distributed weights with a mean of 146 lb and a standard deviation of 28.9 lb.
asked on June 15, 2013 
Statistics
In a genetics experiment on peas, one sample of offspring contained 421 green peas and 166 yellow peas. Based on these results, estimate the probability of getting an offspring pea that is green. Is the result reasonably close to the value of 3/4 that was
asked on June 13, 2013 
Statistics
The probability of a randomly selected car crashing during a year in a certain country is .0479. If a family has three cars, find the probability that at least one of them has a car crash during a year.
asked on June 13, 2013 
statistics
An airline has a policy of booking as many as 17 persons on an airplane that can seat only 16. (Past studies have shown that only 89% of the booked passengers actually arrive for a flight.) Find the probability that if an airline books 17 persons, not
asked on June 12, 2013 
Statistics
How do I figure out the answer to this ? It's been a while since I came across one like it; On a test, 6.25% of the questions are answered incorrectly. If 5 questions are answered incorrectly, how many questions are on the test ?
asked on May 25, 2013 
AP Chemistry
0.015 moles of a compound are dissolved in 18 fl. oz. of water. At what temperature will the solution begin to freeze? The density of water is 1.00g/mL
asked on February 10, 2013 
chemistry
CaCO3(s)+2HCl(aq)>CaCl2(aq)+H2O(l)+CO2 (g) How many grams of calcium chloride will be produced when 31g of calcium carbonate are combined with 11 g of HCl? I have 0.3097 moles of CaCO3 and 0.30169 moles of HCl...I get stuck at that point
asked on January 17, 2013 
Chemistry
calculate the wavelength in nm of the spectral line produced when an electron in an hydrogen atom undergoes the transition from n=3 to n=2. I get 6.56x10^7 meters and 6,561.68 nm but that is not the right answer...help please!
asked on January 14, 2013 
Physical Science Need Help Please!
A light beam has a frequency of 5 x 1015 Hz. What is its wavelength?
asked on November 13, 2012 
english
life is full of choices, so i must learn to make good ones.life is a noun choices which other one
asked on September 13, 2012 
College
Another term that means the same thing as "insurance company" is:
asked on June 19, 2012 
science
What is the amount of water needed to obtain a saturated solution using 27g of barium nitrate? What mass of water is present
asked on January 25, 2012 
Math
A picture frame measure 5 inches wide and 7 inches long . What is the perimeter of the frame ? (163)
asked on December 14, 2011 
Mathematics
How can the number 39 be divided into two parts in order that the sum of 2/3 of one part and 3/4 of the other part is 28? Explain your workings
asked on November 5, 2011 
chemistry
calories given off when 89g of water cools from 44degrees C to 29 degrees C
asked on September 14, 2011 
business law
The U C C dose not apply in cases where both parties are merchants. True or False
asked on March 5, 2011 
english
1. The young student (noun), who was new to (preposition) the school, wants (verb) to join the debating and (conjunction) fencing clubs, 2. I (pronoun) dream nightly (verb) to play the guitar (noun) in (preposition) the school (adjective) band. 3. The
asked on January 13, 2011 
com170
Write five sentences about the role of education in successful financial planning in the spaces on the following page. Correctly use a different verb tense in each sentence. Highlight each verb in yellow and identify the tense in parentheses. 1. Education
asked on January 6, 2011 
Statistics
If the standard deviation of a population is 56 and we want the standard error (the standard deviation of the sample mean) to be 14, then we need to take how many samples?
asked on December 20, 2010 
statistics
The average age of a vehicle registered in the U.S. is 8 years, or 96 months. If a random sample of 36 vehicles is selected, find the probability that the mean of their age is between 98 and 100 months. Assume the standard deviation for the population is
asked on December 20, 2010 
5th grade
how to convert improper fraction into mixed number or whole numbers
asked on November 29, 2010 
science
1.In a device like the one shown below, the cylinder is allowed to fall a distance of 300 m. As a result, the temperature of the water increases by 2.7°C. What would have been the increase in temperature if the cylinder were only allowed to fall 100 m
asked on November 6, 2010 
5th grade
what are two goals of the system used to classify organisms
asked on August 25, 2010 
8th grade physics
1. if you double the distance over which a force moves an object,the work will be multiplied by?? 2.if emily doubles her velocity.her kinetic energy will be? 3.the unit joule is equivalent to?
asked on April 16, 2010 
grammar
revising these sentences so the subject and verb agree with one another. One of my friends want to attend my graduation ceremony. Seven cats,twomonkeys, and adog plays in the store window.
asked on April 9, 2010 
COMM215
revising sentences to remove these pronouns When a police officer fires his gun, he mustfill out a lot of paperwork. When a teacher writes an exam, they think about what aspects of students learning they want
asked on April 9, 2010 
college
Write a sentence of at least 150 words—no substituting semicolons or conjunctions for periods and no stream of consciousness. Include at least one of each of the following: gerund phrase, participial phrase, infinitive phrase, appositive, adjectival
asked on November 24, 2009 
7th grade
how would i put vehicular in a sentence? please help.... it has to be a good sentence to
asked on September 1, 2009 
Math
How do you divid whole numbers by decimals? EX: 20/0.5 decimals in general? Thank you!
asked on June 3, 2009 
world news
Is there anywhere I can look for 1: how eastern thought/philosophy affets the eastern nations/culture 2: what our western world is like in relation to eastern culture and how eastern thought is starting to leak into our wesstern culture 3: how the eastern
asked on April 4, 2009 
social studies
Iformation on columbus? what was china called at the time??
asked on November 11, 2008 
HHS
3 Examples of Mission statements or human services organizations. Show how each one of the mission statements does or does not meet the requirements of a good mission statement. Determaine what other purpose or function the mission statement has. 1050
asked on October 16, 2008 
Mat115
46. Find the fivenumber summary of the following set of numbers. 0.16, 0.08, 0.27, 0.20, 0.22, 0.32, 0.25, 0.18, 0.28, 0.27 A) 0.08, 0.18, 0.223, 0.27, 0.32 C) 0.08, 0.18, 0.225, 0.27, 0.28 B) 0.08, 0.18, 0.235, 0.27, 0.32 D) 0.08, 0.16, 0.23, 0.28, 0.32
asked on May 8, 2008 
alebra
D=cs/n (for s) Deprecitaion
asked on November 9, 2007 
poems
can you give me a poem thatI CAN USE FOR HOMEWORK Certainly, however it may not be so good for whatever you are assigned to do. What about Crossing the Bar by Tennyson? http://quotations.about.com/cs/poemlyrics/a/Crossing_Bar.htm
asked on February 15, 2007 
Phys. Science
I have to create a 5layer density column, using liquids that are not flammable or chemicals, so basically you have to be able to eat or drink it to use it in the column. I only have three layers so far: water, vegetable oil, and corn syrup. Obtain a clear
asked on September 17, 2006

Accounting
450
posted on February 27, 2018 
Social Studies (Grade 8)
These are the Answers i just did this 1.b 2.d 3.the national archives,a weblog of a history professer about her area of specialty,a .gov website
posted on September 13, 2017 
Math
YAY is a liar i just took it promise on my life b c d a a
posted on August 31, 2017 
Language Arts
Booo is litt
posted on June 4, 2017 
Science help!!!!
cool thx got XD :D x/
posted on April 17, 2017 
Chemistry
I figured it out. :) Wolframalpha Failed to understand what i meant and have me the wrong answer even though I did everything correctly.
posted on February 21, 2017 
Chemistry
It's the reactions: 6H++ BrO3+ 5Br > 3H2O+ 3Br2 2 Cu2+ 4I> 2CuI + I2 2H++OCl +Cl > Cl2+H2O
posted on October 25, 2016 
Physics
nm. I figured it out :)
posted on October 16, 2016 
Math (precelc 12)
So, gg=0 wouldn't that get me g(x)=0?
posted on June 23, 2016 
English Check answers
I think you're right for all.
posted on June 21, 2016 
Math (precelc 12)
Thanks for typing that all out! It really helped.
posted on June 21, 2016 
math
Not a question.
posted on June 21, 2016 
Physics (Normal force and static coefficient)
Oops, the units for gravity are incorrect, it should me m/s^2.
posted on June 18, 2016 
Math (precelc 12)
Never mind I figured it out!
posted on June 17, 2016 
Math (precelc 12)
thanks!
posted on June 11, 2016 
math
Neither: 7+4+3=14 7+3=10 10/14 (or 5/7) marbles are not red so you have about a 71% chance of not getting a red marble
posted on June 11, 2016 
Math (precelc 12)
Thanks! Great explanation.
posted on June 11, 2016 
Math (precelc 12)
thanks Bob :)
posted on May 30, 2016 
Math (precelc 12)
Thanks. That really helped!
posted on May 29, 2016 
ALGEBRA
so (x+4)^2 is the same as (x+4)(x+4) Find the roots: x+4=0 x=4
posted on May 29, 2016 
Math (precelc 12)
Thanks!
posted on May 22, 2016 
English
I'd say "he is a unique and blessed person" unless you're writing as a character who would say it like that. It sounds more clear to me.
posted on May 22, 2016 
Math
area=Length x width so, what are the factors of 42?
posted on May 17, 2016 
math
I noticed that Ms. Sue. I must be getting tired, so I'm going to stop before I do something like that again.
posted on March 30, 2016 
math
IGNORE MY FIRST ANSWER 3/4 = 75%
posted on March 30, 2016 
math
3/4 = 25% = 0.25 25% of 160 = 160 x 0.25 Try it and see what you get.
posted on March 30, 2016 
math
remember, one is removed from the original total.
posted on March 30, 2016 
math
Hint: How many red socks are left after she removes one? How many socks are there in total?
posted on March 30, 2016