Friday
October 28, 2016

# Posts by JESSE

Total # Posts: 342

Math
An octopus can swim v km/h in still water. When the octopus swims against a current of 5km/h, its speed is decreased by 5km/h. When it swims with a current of 5km/h, its speed it increased by 5km/h. It takes Joey the Octopus the same amount of time to swim 10km with the ...
October 28, 2016

Maths
Harry is x years old now. 3 years ago Jenny was twice Harry's age. In three years timthe Ahmed will be 5 times as old as Jenny. Write an expression for Ahmed's ago now.
October 4, 2016

Math
How much pure antifreeze must be added to 18 liters of a 20% solution to make a 40% solution ?
July 17, 2016

Physics CENTER OF MASS
A thin rectangular plate of uniform areal density σ = 2.79 kg/m2 has length of 37.0 cm and width of 23.0 cm. The lower left hand corner is located at the origin, (x,y)= (0,0) and the length is along the x-axis. (a)There is a circular hole of radius 8.00 cm with center at...
April 10, 2016

AP Chemistry
A solution is prepared by titrating a 100.0 mL sample of 0.10 M HF (Ka = 7.2 × 10-4) with 0.10 M NaOH a. Does the solution contain a strong acid with a strong base, a strong acid with a weak base, a weak acid with a strong base, or a weak acid with a weak base? b. ...
March 23, 2016

math !
no its not
March 23, 2016

physics
Your CECS graduation tassel hangs from the rear view mirror of your graduation gift, a 1981 DeLorean DMC-12 with Mr. Fusion garbage fusion generator!!! Your tassel hangs plumb or vertical when driving at a constant speed on a level highway. When accelerating you observe the ...
March 1, 2016

Algebra
50x+10(x)+140+20(2x+4)=1720 50x+10x+140+40x+80=1720 100x+220=1720 100x=1720-220 x=1500/100 x=15 15 fifties 29 tens 34 twenties
February 27, 2016

Chemistry
Hi DrBob, the rates are NOT given which is why I am having such an issue trying to work with rate and K both as unknowns.
February 18, 2016

Chemistry
An atmospheric scientist interested in how NO is converted into NO2 in urban atmospheres carries out two experiments to measure the rate of this reaction. The data are tabulated below. A: [NO]0 = 9.63 × 10-1 M, [O2]0 = 4.1 × 10-4 M t(s) 0/3.0/6.0/9.0/12.0 [O2] 4.1/...
February 18, 2016

Physics
A child bounces in a harness suspended from a door frame by three elastic bands. (a) If each elastic band stretches 0.210 m while supporting a 7.35-kg child, what is the force constant for each elastic band? 114.33 N/m (b) What is the time for one complete bounce of this child...
February 8, 2016

Celia and Mary are going to open a boutique. the opening of the boutique is delayed because the purses have not delivered after 60 days. They had a contract with the supplier specifying that the purses must be delivered within 30days. Can Celia and Mary cancel the contract?
January 29, 2016

Connexus Help
i go to connexus but i am in 6th grade and i need help with my assemnet
January 18, 2016

Physics- just verfiying an equation
update: for the u, I don't what happen to it but its supposed to be an omega sign--I guess the formatting got a little messed up
January 9, 2016

Physics- just verfiying an equation
hello, so i'm doing a physics project where I have found the following equation for centripetal force: Fcent=mrù^2 Where f= centripetal force m=mass r=radius ù=angular velocity my question is to make centripetal force greater, does that mean mass, radius and ...
January 9, 2016

Math
Monthly payments on a house valued at \$84000 with 4.9% compound interest over 30 years
January 8, 2016

Physics
A man on a motorcycle plans to make a jump as shown in the figure. If he leaves the ramp with a speed of 29.5 m/s and has a speed of 28.0 m/s at the top of his trajectory, determine his maximum height (h) above the end of the ramp. Ignore friction and air resistance.
January 7, 2016

math
One 15 pound bag of lawn fertilizer covers 350 square feet. Garden Depot sells full bags of fertilizer for \$7.89. What will the cost of enough fertilizer to cover a 42 foot by 80 foot lawn?
November 23, 2015

physics
An airplane travels 3900 km at 810 km/h, and then encounters a tailwind that boosts its speed to 950 km/h for the next 3000 km. What was the average speed of the plane for this trip? 3900+3000 6900 6900/8 862.5
November 8, 2015

Math
Find the surface area of the a square pyramid.The A = 3 m and H = 4.5 m?
March 30, 2015

geography
well that wasn't nice
March 24, 2015

statistics
A casting director wishes to find one male and one female to cast is his play. If he plans to audition 5 males and 7 females, in how many different ways can this be done? DO NOT put a comma in your response.
March 11, 2015

Math
I can't unscramble this. GONUENRIC It deals with Geometry.
March 4, 2015

LA - 1 question
Thank you so much Santana!
January 9, 2015

physics
1. A billiard ball of mass mA = 0.4 kg moving with a speed vA = 2 m/s strikes a second ball, initially at rest, of mass mB = 0.4 kg. As a result of the collision, the first ball is deflected off at an angle of 30.0o with a speed v’A = 1.2 m/s. Taking the x­axis to be ...
January 7, 2015

Thx anonymous! ANONYMOUS IS RIGHT
January 6, 2015

physics
An Olympic diver falls from rest from the platform 10m high. At what velocity does the diver hit the water is acceleration in 9.8m/s^2. Do I assume "rest" means a initial velocity of 0? Could the formula be: d= (vf^2-vi^2)/2(a) ? as in d=10, a=9.8 vi=0 vf = √(d...
November 18, 2014

algebra 2
Mine didn't come out right though?...
November 16, 2014

algebra 2
h(t)=-4.9t^2+30.5t+8.5
November 16, 2014

algebra
A rental company purchases a truck for \$14,500. The truck requires an average cost of \$6.75 per day in maintenance. (a) Find a linear function that expresses the total cost C of owning the truck after t days. C(t) = 1 (b) The truck rents for \$55.00 a day. Find a linear ...
October 25, 2014

algebra
The rate at which water evaporates from a certain reservoir depends on the air temperature. The table below shows the number of acre-feet (af) of water per day that evaporate from the reservoir for various temperatures in degrees Fahrenheit. Temperature, °F af 40 760 60 ...
October 25, 2014

algebra
A piece of pottery is removed from a kiln and allowed to cool in a controlled environment. The temperature (in degrees Fahrenheit) of the pottery after it is removed from the kiln for various times (in minutes) is shown in the following table. Time, min Temperature, °F 15 ...
October 25, 2014

college algebra
There were 39,000 desktop publishing jobs in the United States in 2000. It has been projected that there will be 64,000 desktop publishing jobs in 2010. (a) Using the BLS data, find the number of desktop publishing jobs as a linear function of the year. N(t)= _____? (b) Using ...
October 25, 2014

A supervisor needs to produce metal nameplates for bicycles. Two machines are available. The first requires a single die that costs \$600. The plates will take 3 minutes each to produce at a total cost of \$60 an hour. The second machine requires no initial expense but takes 6 ...
October 10, 2014

Chemistry
Im studying for the MCAT and i found this question in my old chem book. i can't figure out how to derive the formula they are talking about... Nitrogen monoxide reacts with oxygen to give nitrogen dioxide. 2 NO(g)+ O2(g) --> 2 NO2(g) The rate law is -[NO]/&#...
August 4, 2014

Chemistry
Im studying for the MCAT and i found this question in my old chem book. i can't figure out how to derive the formula they are talking about... Nitrogen monoxide reacts with oxygen to give nitrogen dioxide. 2 NO(g)+ O2(g) --> 2 NO2(g) The rate law is -[NO]/&#...
August 4, 2014

Chem
Book doesn't have an answer for this one. Im just lost as to how to apply the ideal gas law to the rate law and constant. P=MRT => 155atm=(2mol)(0.0821)(298k)?
August 4, 2014

Chem
where does the rate law and rate constant come into play?
August 4, 2014

Chem
Im studying for the MCAT and i found this question in my old chem book. i can't figure out how to derive the formula they are talking about... Nitrogen monoxide reacts with oxygen to give nitrogen dioxide. 2 NO(g)+ O2(g) --> 2 NO2(g) The rate law is -[NO]/&#...
August 4, 2014

Chem
Im studying for the MCAT and i found this question in my old chem book. i can't figure out how to derive the formula they are talking about... Nitrogen monoxide reacts with oxygen to give nitrogen dioxide. 2 NO(g)+ O2(g) --> 2 NO2(g) The rate law is -[NO]/&#...
August 4, 2014

chemisrty
A 50.0 mL solution of 1.2 M HCl at 24.1C is mixed with 50.0 mL of 1.3 M NaOH, also at 24.1C, in a coffee-cup calorimeter. After the reaction occurs, the temperature of the resulting mixture is 29.8C. The density of the final solution is 1.05 g/mL. Calculate the molar heat of ...
June 18, 2014

Algebra
The ratio of the lengths of strings that play the guitar notes D and B is 27 to 16. If a string 64 cm long plays a B, what is the length of the string that plays a D?
June 11, 2014

Introductory Algebra
My teacher is 67 years old.
June 11, 2014

calculus
An electron, travelling at 2000 m/s, is suddenly influenced by an extreme deceleration of 3000 m/s2. How fast is it going 0.03 s later?
June 11, 2014

algebra
m+3(m-4)=16 2z-4(9-3z)=62 2b+8/5=-12
March 5, 2014

math
-n+8n=35 4x-7-7x=-1 -22+3k+6=-28 -2(m+7)=-22 m+3(m-4)=16 2z-4(9-3z)=62 2b+8/5=-12 g+4/7=6 9-3h/5=-6 4m-16/12=-3
March 5, 2014

science HELP ASAP!!!!!!!
March 3, 2014

math
-3h=9(2-3h) 5(t+7)=2(s+9) 6(s+4)=3(s+9) 2(p+2)=1.8-2-0.2(p+5)
February 27, 2014

math
30-2s=4s 13q-48=-3q 5z-43=2z+80 8f+11=-7f-19 9b-10=-b-18
February 27, 2014

math
-(6-c)+3(2c-7)=1
February 20, 2014

math
solve the equation -n+8n=35
February 20, 2014

math
doug earned \$40 from weekend job. he spent 1/4 of it on cd and 1/5 on movie ticket. how much money does he have left?
February 5, 2014

trig
A computerized spin balance machine rotates a 35-inch-diameter tire at 400 revolutions per minute. (a) Find the road speed (in miles per hour) at which the tire is being balanced. (Round your answer to two decimal places.) (b) At what rate should the spin balance machine be ...
January 23, 2014

math
what is the lcd of 1/2 and 2/3
January 20, 2014

math
what is the least common multiple of 8,10
January 20, 2014

soicalstudies
and really who gives them wikipidia any way
October 31, 2013

soicalstudies
A the answer is A sheesh just say it and get it over with and ms. sue before you say anything i know what i did so give me any of the crap your giving avery body else
October 31, 2013

Psychology
The voltage at a receptor site has just changed from -70 millivolts to -75 millivolts as a result of an _______ and will ________. a). inhibitory postsynaptic potential;increase the likelihood of an action potential. b). excitatory postsynaptic potential;decrease the ...
October 3, 2013

Statistics
No typo, that is how the question reads. Can you check my answers? 1. 0.54 2. 0.52 3. 0.140608 4. 0.405224 5. 0.4746
September 30, 2013

Statistics
Ricardo's car rental offers five different types of vehicles, compact cars (CC), midsize cars (MC), sport utility vehicles (SUV), vans (V), and luxury cars (L). Historically, if a random individual comes to rent a vehicle, the following probabilities apply: P(CC) = 0.16 P(...
September 30, 2013

math
a cookie recipe calls for 2 1/4 cups of flour.the yield of the recipe is two dozen cookies.how much flour goes into each cookie?
September 23, 2013

math
What is the scenario for the question the capacity of a beaker is 150 m.l.. how many beakers can be filled from a 4 L container?
August 27, 2013

beginning algebra
the rays won 33 fewer games than twice as many games as they lost. the total games played was 162. how many wins and how many losses did they have?
June 8, 2013

english
Im doing a 8 paragraph project report on cherokee indians, i need a introduction, final draft, six body paragraphs and a conclusion for a total 8 paragraphs please help me it due the 12
May 31, 2013

Math
Binary: 1cm,2cm,4cm,8cm,16cm 1. 1 2. 2 3. 1+2 4. 4 5. 5+1 6. 4+2 7. 4+3+1 8. 8 9. 8+1 10. 8+2 11. 8+2+1 12. 8+4 anyways you get it
May 28, 2013

Chemistry
....question. what is the concentration of the sulfuric acid? Are we to assume that this is pure sulfuric acid, no water?
May 28, 2013

math
customers in 14 years = 51,200 (1-0.038)^14 Did they give you a formula for this?
May 28, 2013

math
same thing as the other one i answered the general case is: new value = (old value)X(1+/-percent change)^years remember that 1% = 0.01 in the above formuala, and that it's negative if it's "decreasing/depreciating" and positive if it's growing.
May 28, 2013

english
Book: Information you’ll need to cite a book Example- Powell, Kevin, ed. Step into a World: A Global Anthology of the New Black Literature. 2nd ed. New York: Wiley, 2000. 1. Author(s) or Editor(s)- last name, first name, middle is any, followed by a period 2. Title of ...
April 21, 2013

chemistry
9 times the MW of C plus 8 times the MW of H plus 4 times the MW of O. Add it all up
April 9, 2013

Clinical Chemistry
Thank you... Any ideas on ISE vs. flame photometry? I was thinking that maybe flame photometry comes out consistently slightly lower because it is hard to standardize? I mean, its hard to get the exact temperature of the flame to be precise (and accurate)?
April 9, 2013

Clinical Chemistry
I have 2 questions relating to clinical chemistry... 1st: I have no idea where to even start with this. It seems like it should be simple, but I have no clue. The question is... "In serum, about 55% of total serum calcium is bound. The measurement of ionized (free) ...
April 9, 2013

Clinical Chemistry
My guess is that since 55% is bound, that means 45% is free. So... make a ratio and solve for x .45/1.10mM = .55/x Whatever x equals, add it to 1.10mM since we are looking for the total calcium in serum. What do you think?
April 9, 2013

Clinical Chemistry
BLD 414?
April 9, 2013

Algebra
I'm having trouble finishing evaluating the expression b+1/6=-1/3
February 20, 2013

Math
two cards are drawn from a deck of cards. Once a card is drawn, it is not replaced. Find the probability of drawing a queen followed by a king.
January 27, 2013

Social Studies
What us a Political Cliff? I am supposed to write a summary about the subject.
January 3, 2013

Help
November 25, 2012

burnhan
Explain how you would use a number line to round 148 to the nearest ten
October 17, 2012

math
Y=4x-3
September 13, 2012

chemistry
how many electrons flow through a wire in 83.9 seconds if the current was 0.32 amps? ( an ampere is a coulomb/sec)and the charge on an electron is 1.602×
September 8, 2012

chemistry
A nitrogen atom has 7 protons, and its most common isotope has 7 neutrons. A radioactive isotope of nitrogen has 9 neutrons. What is the atomic number and what is the mass number of this radioactive nitrogen? Show all of your work for full credit
August 26, 2012

Social Studies
Does anyone have any information about Sulawesi artifacts? I am having trouble finding facts about an ancient ceremonial mahogany grass bowl. Thanks.
June 12, 2012

statistics
a sales manager wants to know whether a special promotional campaign is a success. he had the following data-Retail outlets :1 2 3 4 5 6 ; Sales before campaign : 50 48 31 42 28 53 ; Sales after campaign : 56 55 30 45 29 58. Test at 5% LOS.
May 14, 2012

Statistics
Having problems reading the z-table. I don't understand how .1500% equates to a 1.04 z-score Thank you for your help
May 13, 2012

Chemistry
What physical properties will the ionic compound CaSO4 be expected to have?
April 27, 2012

Chemistry
Which group of elements is most likely to not form ions?
April 26, 2012

social studies 7th
Who introduced them into Italy by Etruscan nobile
April 3, 2012

platonic solids
what is formula for deciding size of pentagons to make a 9" tall (12", 16" tall, etc.) dodocahedron?
March 29, 2012

chemistry
A gas is compressed from an initial volume of 5.60 L to a final volume of 1.22 L by an external pressure of 1.00 atm. During the compression the gas releases 128 J of heat. What is the change in internal energy of the gas?
March 20, 2012

chemistry
a 256 mL sample of an unknown gas was collected over water at 23 degrre celsius and 750 mmHg. the gas has a mass of 0.80 grams. what is the molar mass of the gas? (the vapor pressure of water at 23 degree celsius is 21.0 mmHg)
March 19, 2012

math
. Which is the next term in the number pattern: 77, 64, 53, 44, 37
March 1, 2012

history
Well, this is an idea of a thesis statement.. The presence of the urban classes prevents revolutions from becoming homogeneous movements. This is because each class (or individual) fight for their own material interests.
February 18, 2012

history
I need an opinion regarding this thesis statement. Urban areas had always served as the logical epicentre for organized opposition against the establishment. However, due to the presence of urban classes trying to fight for their own material interests, rebellions and ...
February 18, 2012

math
Given 9 yards of fabric how many whole costumes could be made if each costume uses 1 3/7 yards of fabric
February 14, 2012

Math
Adult tickets=x Child tickets=88-x 8x + 5(88-x)=614 8x + 440-5x=614 3x=614-440 3x=174 x=58 Adult=58 child=30
February 4, 2012

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