Thursday

August 25, 2016
Total # Posts: 190

**Chemistry **

What is the mole fraction of ethanol, C2H5OH, in an aqueous solution that is 50.0% ethanol by mass?
*August 22, 2016*

**Math**

Why are you using my name?
*March 19, 2016*

**Math**

Is 367685-108653 = $259,032 part of question 1? Thats all I do? What would I do with the 56.4% after that?
*March 19, 2016*

**Math (grade 7)**

No but it might be a typo i think it is 5.4 then
*March 19, 2016*

**Math (grade 7)**

yes it said "plus interest at 54%/yr" is that impossible?
*March 19, 2016*

**Math (grade 7)**

Yes i forgot to put it there but since its interest it would be 0.54 ? right
*March 19, 2016*

**Math (grade 7)**

i think its about interest rates because it mentioned interest sophie owns a restaurant. She has an overdraft line of credit. Each overdraft transaction costs $43.20, plus interest at 54%/yr. On wednesday, Sophie had 9 overdraft transactions for $562. She paid back the money ...
*March 19, 2016*

**Math (grade 7)**

Okay i'm just taking the hundredths place not the tenths. Thank you. Can you help me with one more problem that i've been stuck on? Its about interest rates and its confusing me
*March 19, 2016*

**Math (grade 7)**

We haven't learnt that yet. I only know the basics of rounding to the nearest tenth but not hundreds yet. Would it be 32.6? Just one up? What formula did you use?
*March 19, 2016*

**Math (grade 7)**

I got 32.50672? Is that correct? My calculator is bad.. would the formula be Prt?
*March 19, 2016*

**Math (grade 7)**

Eloise makes & sells screen print t-shirts. She needs to buy some supplies. Paint costs $89.23 & a new screen costs $23.25. She saves 28.9% if she uses her store membership card. How much will Eloise save?
*March 19, 2016*

**Chemistry **

What is the mass of all atoms in 2Fe+3O2=2Fe2O3
*March 17, 2016*

**Math fractions**

A picture frame is 6 1/4 inches wide by 8 inches tall. If a 5 inch by 7 inch picture is to be centered in the frame, what should the right margin be?
*November 19, 2015*

**math**

If someone had a score of 495/500, What is the mixed number fraction? "I'm confused because if the denominator is bigger than the numerator how can we end up with a mixed number"
*November 14, 2015*

**math**

If someone had a score of 495/500, What is the mixed number fraction? "I'm confused because if the denominator is bigger than the numerator how can we end up with a mixed number"
*November 14, 2015*

**physics**

An apple (0.100 kg) is thrown vertically upward at a speed of [let x = any whole number between 10 and 20] m/s (from an arm 1.5 m off of the ground). What is the maximum height that the apple reaches? (g=9.8 m/s2)
*November 11, 2015*

**Math**

Ryan has nine 14 ounce bags of popcorn to repackage and sell at the school fair. A small bag holds 3 ounces. How many small bags can he make?
*September 8, 2015*

**Calculus**

A 0.9 ml dose of a drug is injected into a patient steadily for half a second. At the end of this time, the quantity, Q, of the drug in the body starts to decay exponentially at a continuous rate of 0.4% per second. Using formulas, express Q as a continuous function of time, t...
*June 18, 2015*

**Justice Studies**

Hello, Thank you for your help. Devon
*May 7, 2015*

**Justice Studies**

Hello, I need help in locating format for filing a Discovery Motion in the State of Texas. I have searched but can't find anything on formatting for filing. Devon
*May 7, 2015*

**Bus 101**

Can someone help me to compare answer for final exams introduction to Business - These are my answers Here are my answers... 1.c 2.a 3.a 4.d 5.c 6.b 7.a 8.b 9.c 10.b 11.a 12.a 13.c 14.d 15.a 16.a 17.a 18.8 19.c 20.b 21.a 22.a 23.d 24.a 25.b 26.d 27.a 28.b 29.d 30.c 31.b 32.c ...
*April 7, 2015*

**Math**

A bottle of water costs $1.50. Explain how you would make a graph of four ordered pairs to model the total cost of the water in terms of the number of bottles.
*March 16, 2015*

**algebra**

The Kwon family has a rainwater catchment system they use to water their garden. After 3 days without rain, the depth of water in the tanks is 63 inches. After 5 days, the depth is 57 inches. Write an equation in point-slope form describing the situation
*March 4, 2015*

**Business math**

6,000
*February 21, 2015*

**Business math**

The clarkdell school system has three schools. School #1 has 500 students School #2 has 600 students School #3 has 400 students What part of a $15,000 allocation will go to school #2? 15,000 divide by 3= $5,000 Will you check my answer?
*February 21, 2015*

**math**

if $13.69 is the price of a pair of sneakers after 75% was taken off, what was the original price of the sneakers?
*February 11, 2015*

**Algebra**

divide both sides by 350 and the answer should be 1.05
*February 11, 2015*

**Physics**

A computer hard drive rotates at 5400 revolutions per minute. Starting from rest, what torque will get the hard drive up to that speed in just 150 revolutions? The moment of inertia of the hard drive is 1.3×10^-2 kg·m^2. I know the answer is 2.2 N.m, but I'm not...
*December 5, 2014*

**math**

We are two integer brothers apart by 7 on the number line.if you take 5 times of me and add 2 times my brother you'll get 42. Can you find my value? I believe there are two answer. ... first answer is 5x + 2(x+7)=42 therefore x=4 and 5(8)+2(1)=42 Both answers can be 4 & ...
*November 5, 2014*

**algebra**

Q/18=5/4
*November 3, 2014*

**math**

Please help with this one im totally confused
*June 22, 2014*

**math**

If my dog and cat has a combine weight of 24kg and my rabbit and my dog has a combine weight of 20kg and my cat and rabbit has a combine weight of 10kg.whats the combine weight of my rabbit,dog and cat
*June 22, 2014*

**Physics**

A block of mass m = 2.4 kg is released from rest at a height of H = 3.0 m on a curved frictionless ramp. At the foot of the ramp is a spring whose spring constant is k = 317.0 N/m. What is the maximum compression of the spring, x?
*June 17, 2014*

**arithmetic**

I am larger than 50 and less than 100. i have a 5 in the ones place. i have a number smaller than 6 in the tens place. What number am I?
*June 11, 2014*

**Math**

A wheel with radius 2 cm is being pushed up a ramp at a rate of 6 cm per second. The ramp is 520 cm long, and 260 cm tall at the end. A point P is marked on the circle. How far does the wheel travel in one rotation?
*May 4, 2014*

**algebra**

use the quadratic formula to find the roots of the equation. round to the tenths place,if necessary 11x^2-x-3=0
*April 24, 2014*

**chemistry**

Assume that no heat is lost to the surroundings and calculate the enthalpy involved when 200. mL of .10 M potassium hydroxide and 200. mL of .10 M hydrochloric acid are mixed. Both solutions began at room temperature, 24.5 degrees celsius, and have densities very close to 1.00...
*April 14, 2014*

**spanish**

when do you think they will be able to get back to me by? just so I know when to check back :)
*April 2, 2014*

**spanish**

if someone could help me conjugate these words correctly id really appreciate it!(sorry, I was unable to put accentos) 1. ?Habra alguien que me (comprender)? 2. Querian que tu (ir) a la biblioteca. 3. Tomas fue a la carcel porque (robar)a alguien. 4. Era imposible que tu el (...
*April 2, 2014*

**Chemistry**

Calculate the energy associated with the photon that would be released when an H electron falls fro the n=3 energy level to the n=1 energy level. show work if possible so I can understand how to do it. Thanks in advance!!!
*March 31, 2014*

**geometry**

gerri raced around all the faces of a three-dimensional shape.she drew the following polygons.what three-dimensional was gerri tracing.
*March 24, 2014*

**Chemistry HELP PLEASE!!**

you're a life saver
*March 20, 2014*

**Chemistry HELP PLEASE!!**

write the oxidation and reduction half-reactions that occur at the anode and cathode, respectively, when MgCl2 liquid is electrolyzed using inert electrodes. HELP PLEASE!!!
*March 20, 2014*

**chemistry**

in regards to electrochemistry, Can Na metal displace Zn2+ in a single replacement reaction?
*March 6, 2014*

**chemistry**

a solution of 2.5 M weak acid is .52% ionized. what is the Ka value of this acid? ive been stuck on this one for a long time and cant figure out where to even start...if someone could walk me through this itd be great! thanks
*February 26, 2014*

**Single vs double replacement reactions**

a single replacement is a reaction between a compound with two species and a compound with one species such as: 2NaOH + H2 ==> 2Na + 2H-OH a double replacement reaction is where two compounds, both with two species react such as NaOH + HCl ==> NaCl + H-OH
*February 26, 2014*

**chemistry**

I am stuck on this one and was wondering if anyone can help me out! Why does sodium nitrate (166.5) have a bigger molar entropy than sodium bromide (86.8)? Thanks!
*February 17, 2014*

**Chemistry**

2,4, and 5 are correct
*September 23, 2013*

**health & safety**

Serious violations were issued citing 29 CFR 1910.252(a)(2)(iii)(B) and 1910.252(b)(2)(i)(A). Using the PDCA framework, develop a plan that will correct the deficiencies and ensure that the violations do not recur.
*July 30, 2013*

**environment**

thx!!
*July 30, 2013*

**environment**

im not very familur with either of these. just looking for a starting point.
*July 30, 2013*

**math **

what is the surface area of a right cone with a diameter of 15 units and a slant height of 34 units.
*June 12, 2013*

**math**

i think you made a mistake ms sue the and is 301.44 not 30.44 as you stated
*June 12, 2013*

**math**

surface area is 2 pi r^2 + 2 pi rh. therefore 2x(3.14)x(4) + 2x(3.14)x2(22)= 301.71 units. is this answer correct ms sue
*June 12, 2013*

**math**

what is the surface area of a cylinder with a radius of 2 units and a height of 22 units
*June 12, 2013*

**Math**

what is the surface area of a sphere with a radius of 4.75 units
*June 12, 2013*

**geography**

Why did america grow geographically
*May 28, 2013*

**science**

I need an example of an acrostic poem for the word kinetic please help!!!!!!
*May 13, 2013*

**math**

the ans is 16... x+2x-5=43..... therefor 3x=48 then divide both sides by 3 to solve for x
*April 20, 2013*

**Math**

very simple!!! they drank 10 quarts and in total we have 24 quarts because 4quarts=1 gallon therefore 6x4=24 quarts or 6 gallons.... subtract the amount of quarts they drank from the total amount of quarts which is 24... Answer is 14 quarts remaining
*April 15, 2013*

**statistics**

about what percent of the bags of pet food weigh less than 49.8 lb?
*March 3, 2013*

**math**

(8 x____) x 5 = 8 x ( 20 x 5).. third grade question please help me solve
*January 5, 2013*

**MATH**

six-eighths and fifteen-twentieths
*December 3, 2012*

**Calculus**

Suppose x^2+1>= f(x) >= 4x-3 for all x. Compute lim f(x) x->2
*October 29, 2012*

**medical**

a. xenology b. morphology c. xenomorphology d.monumentology Which one of the above answers are the study of the form of body parts is called?
*July 9, 2012*

**Medical Billing**

1. Hospitals 2.Insurance forms 3.Billing services 4.none of the above Which one of the above words are required to keep a list of acceptable abbreviations?
*July 5, 2012*

**math**

solve 27^2x-1=(1/81)^x
*May 17, 2012*

**math**

simplify (1+3i)(1-5i)
*May 16, 2012*

**math**

solve(x-1)^2=-4..... i used the quadratic formula but got stock ... please help thank you
*May 16, 2012*

**math**

please help... evaluate (27^1/9)^3
*May 16, 2012*

**math**

solve for x 1/2x + 3/4x= 7/8x^2
*May 16, 2012*

**Math**

Square root of 218
*April 29, 2012*

**Math**

Squar root of 218
*April 29, 2012*

**Math**

Solve for x: x^2 -2x-4=0
*April 29, 2012*

**Physics**

(the drawing is of a square with each side equaling L and the opposites of each corner are equal to each other, so the mystery corner would be 3I) Four parallel long straight wires are carrying current perpendicular to the page, and the points at which they pass through the ...
*March 6, 2012*

**Math**

At a summer camp there are 60 girls and 30 boys. Twenty percent of girls and 40% of boys passed the swimming test. What percent of the campers passed. Please show working.
*February 12, 2012*

**Math**

A bill for a meal is $10.38 including tax. Find the total cost if the customer leaves a 15% tip.
*February 12, 2012*

**Math**

The reason why I am confused is because 81.25 / 125=65%. Therefore it means you got 43.75 questions wrong. Since 42 is fewer questions wrong you should pass...
*February 12, 2012*

**Math**

A test has 125 items. Each correct answer earns 1point and 65% is a passing grade. If you get 42 answers wrong will you pass? Show working
*February 12, 2012*

**math**

First convert all the measurements to inches by using the formula 12 inches= 1 foot.. Therefore 23' - 11"= 287".. 25'- 2"=302".. 18'-3"=219".. 28'- 8"= 344".. 32'- 4"=388"..... Which gives a total of 1,540&...
*February 7, 2012*

**Math**

Pat paid $35 for a shirt that originally cost $50. What percent of the original price did the shirt cost? Please show working. I calculated it to be 30% but the answers provided are (a) 40% (b) 65% (c) 70% (d) 85%.........Please Help me
*February 3, 2012*

**Pre-Algebra**

A whole number is an integer.......A repeating decimal is a real number. Real numbers are either rational or irrational
*February 1, 2012*

**Math**

The sticker price of car is $15,800. If the sales tax is 8% what is the total cost? Show working
*January 31, 2012*

**math**

A test has 125 items. Each correct answer earns 1point and 65 percent is a passing grade. If you get 42 answers wrong will you pass? Show working
*January 31, 2012*

**APUSH**

Trusts emerged in industries (such as oil and steel) due to competition. Allying with competitors to monopolize markets was also common. People wanted to have more money and be better than their competition, so they would join together (in trusts) and monopolize their rivals. ...
*January 24, 2012*

**grammar**

Below the main level, we have a large playroom. What part of speech is below
*January 4, 2012*

**Physics**

A fish at a pressure of 1.1 atm has its swim bladder inflated to an initial volume of 8.16 mL. If the fish starts swimming horizontally, its temperature increases from 20.0 degrees Celsius to 22.0 degress Celcius as a result of exertion. A)Since the fish is still at the same ...
*May 4, 2011*

**Physics**

A cylindrical diving bell 4.0m tall, with an open bottom, is lowered to the bottom of a lake on a day when atmospheric pressure is 100 kPa. It is observed that water rises inside the bell to within 1.0m of the top. A)What is the pressure of the air trapped in the diving bell? ...
*May 4, 2011*

**Physics**

A fossil-fuel power plant that generates 1000MW of electrical power discharges 1600MJ per second as waste heat into the river. A)At what rate(in MW) is thermal energy obtained fromt the burning of coal? B)What is the thermal efficiency(power output/heat input) of the plant? C...
*May 4, 2011*

**math**

Add and simplify. 3/4+1/10+7/15
*April 25, 2011*

**Geometry**

A kite has diagonals of 16 inches and 23 inches as seen below. What is the perimeter of the kite?
*March 15, 2011*

**physics**

A tugboat pulls a ship with a constant net horizontal force of 5200 N and causes the ship to move through a harbor. How much work is done on the ship if it moves a distance of 3 km?
*December 9, 2010*

**1th Grade Math**

What is a dick
*December 6, 2010*

**physics**

Approximate the gravitational force of attraction between a 42.0 kg girl and a 56.0 kg boy if they are sitting 3.0 m apart in physics class.
*December 2, 2010*

**physics**

A girls sits on a tire that is attached to an overhanging tree limb by a rope. The girl's father pushes her so that her centripetal acceleartion is 3.8 m/s2. If the length of the rope is 3.3 m, a) what is the girl's tangential speed? b) If the magnitude of the force ...
*November 18, 2010*

**physics**

A 905 kg test car travels around a circular track with a circumference of 3.25 km. If the magnitude of the force that maintains the car's circular motion is 2140 N, what is the car's tangential speed?
*November 18, 2010*

**5th grade spelling**

The antonyms for dry
*November 17, 2010*

**Physics Spring**

2(1)/.12^2=138.88888888889=138.9N/m F=kx = mg=kx => ma=kx => m=kx/a (138.9(.12))/16 = 1.04kg
*November 15, 2010*

**physics**

A 25 kg chair initially at rest on a horizontal floor requires 360 N horizontal force to set it in motion. Once the chair is in motion, a 316 N horizontal force keeps it moving at a constant velocity. a) Find the coefficient of static friction between teh chair and the floor...
*November 8, 2010*

**physicss**

What average force is required to stop an 1100 kg car in 9.1 s if it is traveling at 83 km/h?
*November 1, 2010*