Sunday
February 14, 2016

Posts by andy

Total # Posts: 878

math
5/8 x+ 1/16 x = 3/16 + x x= - 3/5 I'm trying to verify my answer. these are fractions
February 8, 2016

Math
idk what but, 10.5 divided by 3 is 3.5
February 8, 2016

math
a recipe calls for 5/7 cup of granola. how much is needed to make half the recipe.(1/2)(5/7)= 5/14 Is this correct?
February 5, 2016

Physics
It's my first time taking physics, how would I get to the answer?
January 24, 2016

Physics
A tennis player strikes a ball when it is 1 m above the ground, with a velocity 17 m/s at 30 degrees above the horizontal. The net is 4 m away horizontally and it is 0.6 m high. How high, vertically, above the net does the ball pass?
January 24, 2016

art
how Picasso used shape or form in the Weeping Woman, and the effect of that usage on the artwork.
January 20, 2016

math
what is pi
December 7, 2015

science
I need an acrostic poem about forces
December 7, 2015

Physics
A person who is 1.6 m tall throws a ball with a speed of 6.4 m/s at an angle of 65 degrees above the horizontal. What are the x and y components of the velocity (in m/s) of the ball the instant before it strikes the ground?
December 2, 2015

Hinigaran, math
Four numbers are in the ratio 1:4:5:8. If the largest is 144, what is the sum of the four numbers?
December 1, 2015

math
Nina has a stick 5 ft. long. She saw it into 8 equal length pieces. How long will each piece be? Fraction Would it be 5/8 or 8/5 confused
November 17, 2015

math
Straight Numeric and Terminal Digit Filing i dont understand it at all
November 14, 2015

History of Muslims
1)what is the reason for the battle of uhud? 2)why did Wahshi al habashi want to kill hamza (the prophet mohammad's uncle)? 3) What was the prophet's plan on this battle ? 4)how many soldiers were in the muslims army and in the meccan army? 5)Why did the muslims lose ...
November 11, 2015

Physics
Two particles, of mass m and mass nm, undergo a head-on, fully elastic collision. (Here n is just a unitless number.) Before colliding the particles approach one another with equal speed v. Snapshots of the particles before, during, and after the collision are shown above. ...
November 3, 2015

History
Check my homework? Choices: A. Barbed-wire fences, B. windwills, C. steel plows, D. McCormick Reaper, E. railroads Question: Life on the prairie was difficult for everyone. But there were ways to succeed. Match the problems homesteaders faced with possible solutions. little ...
October 10, 2015

History
Check my homework? Choices: A. Barbed-wire fences, B. windwills, C. steel plows, D. McCormick Reaper, E. railroads Question: Life on the prairie was difficult for everyone. But there were ways to succeed. Match the problems homesteaders faced with possible solutions. little ...
October 10, 2015

AP Calculus AB
Hello! I'm having trouble with this related rates problem: A 5ft tall person is walking away from a 16ft tall lamppost at a rate of (2/x) ft/sec, where x is the distance from the person to the lamppost. Assume the scenario can be modeled with right triangles. At what rate ...
October 4, 2015

physics
Solve it pls?
September 20, 2015

MATH HELP
was is the right answer?
September 9, 2015

algebra, numerical operation
Danny made a mistake in the following problem. Each line shows the steps Danny took in order to solve the problem. The mistake was made in Line ___. Only input the number of the first incorrect line. Line 1 21 + 35 ÷ 7 + 6(2) Line 2 21 + 5 + 6(2) Line 3 21 + 11(2) Line ...
August 26, 2015

math
thanks steve
August 13, 2015

math
a pantry contains 6 shelves each 42 inches long. the shelves are to be reclined with fresh paper. the paper is sold in 1 yard rolls. the number of 1 yard rolls needed is:
August 13, 2015

Maths Lit, Accounting, Economics, Business Studies
I am a grade 10 learner doing Maths Literacy, Accounting, Business Studies, Economics, Life Orientation, English and Afrikaans I want to know what Degree I can study in University and also to check what career path I would be able to do.
August 5, 2015

Calculus
1. Provide an example of a function f that is continuous at a = 2 but not differentiable at a = 2. 2. Provide an example of a function g that is differentiable at a = 3 but does not have a limit at a = 3. Thanks!
July 8, 2015

To Ms. Sue
Hey Ms. Sue! I've got a question How well do you know everybody's questions? Like how do you know everything? That's all I want to know.
May 19, 2015

English
craniectomy sounds weird. I'll have to go with this.
May 19, 2015

Calculus, derivatives
The curve is given by x^2+2r(sqrt(y))=xy What is dx/dr when y is constant?
May 8, 2015

Spanish
It looks cool of when you talk Spanish
May 2, 2015

Language Arts
It's A
May 1, 2015

math
a large piece of cadboard, 5cm by 8cm to be made by cutting out sqaures in each corner. find dimensions that will maximize the volume? vol= (8-2w)(5-2w) (w) answer= 1cm and 10/3 cm is this correct?
March 29, 2015

Calculus
1. Prove that, among all rectangles with fixed perimeter p, where p > 0, the largest in area is a square. 2. A 2 × 3 array of six congruent rectangular pigpens (that all look the same from above) will be in the overall shape of a rectangle R. We may use 100 feet of ...
March 27, 2015

math
Thanks!
March 17, 2015

math
Nolan practices the piano for 1 2/5 hours every Saturday and Sunday. How long does he practice each weekend? Express your answer in hours and minutes.
March 17, 2015

chemistry
Suppose a reaction has the equilibrium constant K = 2.3 10-7 at a particular temperature. Will there be a large or small amount of unreacted starting material present when this reaction reaches equilibrium? a)There will be a small amount of unreacted starting material present ...
March 15, 2015

la check
which of the following is not a major point of view first person third person fourth person limited (THIS ONE)
February 24, 2015

Calculus
A spherical balloon with radius 3 inches is partially filled with water. If the water in the balloon is 4 inches deep at the deepest point, how much water is released when the balloon hits the wall and breaks?
February 18, 2015

physics
Tom has a mass of 67.2 kg and Sally has a mass of 58.5 kg. Tom and Sally are standing 23 m apart on a massless dance floor. Sally looks up and she sees Tom. She feels an attraction. If the attraction is gravitation, find its magnitude. Assume both can be replaced by spherical ...
January 24, 2015

Math
Theo drove a slow car 996 miles to Oregon last spring and used a total of 40 gallons of gasoline. what was the average miles driven per gallon of gasoline? Do I divide 40/996 to get this answer?
January 22, 2015

maths
find the turning points for the curve y=2x^3-1/2x^2-x+5. Determine the nature of the turning points. Appreciate your help
January 4, 2015

Physics
The windpipe of a whooping crane is about 1.27 m long. Assuming that the pipe is closed at one end, what is the fundamental frequency of this pipe? Answer in Hz and use 340 m/s for the speed of sound.
December 1, 2014

algebra
simplify the expression show your work 3x(4x^4-5x)
November 22, 2014

accounting
Starbucks-. Locate the company’s annual report as outlined previously. Find the company’s segment information; it should be in the “Notes to Consolidated Financial Statements” or other similarly named section. Look for the word “Segment” in a ...
November 20, 2014

physics
A spherical mirror is polished on both sides. When the concave side is used as a mirror, the magnification is +1.2. What is the magnification when the convex side is used as a mirror, the object remaining the same distance from the mirror?
November 6, 2014

physics
A car weighing 1.0 x 10^4N is parked on a 34 degree slope. The brakes fail and the car starts to slide down the hill. Assume no friction. Show your work, and determine a) the acceleration of the car, and b) after it has moved 28.0 m, how fast is it moving?
November 2, 2014

Math
5 + y/6=8
October 23, 2014

Algebra
I'm not getting it. I've tried to re-read the notes but I'm still confused. Label each statement as "true" or "false". If "false" correct the underlined portion. 1) If *|n+9| <_4,* then n+9>_ 4 and n +9_<4 2) If y-x <5-x ...
September 29, 2014

Chemistry
15.0 mL of 0.30 M sodium phosphate solution reacts with 20.0 mL of 0.23M lead(II) nitrate solution. What mass of precipitate will form?
September 28, 2014

Chemistry
A 55.29-g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? (Ignore significant figures for this problem.)
September 28, 2014

Chemistyr
A 55.29-g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? (Ignore significant figures for this problem.)
September 28, 2014

chemistry
What volume of a 0.550 M solution of potassium hydroxide can be made with 18.3 g of potassium hydroxide? (Ignore significant figures for this problem.)
September 28, 2014

Physics
A motorcyclist traveling 35.0 m/s realizes suddenly that he is headed straight for the edge of the Grand Canyon 50.0 m away. He immediately begins to brake, decreasing his speed at a rate of 7.00 m/s^2. With what velocity will he fly off into the canyon?
September 23, 2014

math
One cubic meter (1.00 m3) of aluminum has a mass of 2.70E+3kg, and 1.00m3 of silver has a mass of 1.05E+4kg. Find the radius of an aluminum sphere whose mass is the same as that of an silver sphere of radius 1.07cm.
September 7, 2014

chemistry
What type of chemical rxn is Na2SO4(aq) +Ba(NO3)2(aq) the product is BaSO4(s) + 2NaNO3(aq)?what is its net ionic equation?
September 3, 2014

Algebra
please help Solve the equation if possible -2|3y+7|+9=5
August 31, 2014

Algebra
Please help. What is the x intercept of y+4=-4(x-2) I've gotten like 2 different answers: -3 and 1.
August 24, 2014

science
TS1 = 85 C xS1 = 0.5000 TS2 = 85 C xS2 = 0.0 ( saturated liquid water at 85 C ) Steam Table Data at 85 C : ---------------------------------------... T = 85 C Psat = 57.83 kPa hf = 355.90 kJ / kg hfg = 2296.0 kJ / kg hg = 2651.9 kJ / kg Get hS1 for the steam from the quality ...
July 16, 2014

history
damnon tyvm I think I found it... Idustrial Revolution
July 13, 2014

history
_______, or laying high taxes on imported goods, was one way the European government supported and aided its own economy during industrialization
July 13, 2014

physics
what is the heat required to convert 0.1 kg of melting ice into steam at 100 degree celcius
May 20, 2014

math
Sorry posted wrong thing. ____ ____
May 6, 2014

math
Math two/y=2 ___ ____
May 6, 2014

chemistry
What is the [CH3NH3+] of a solution which is 0.1003 M in CH3NH2 and 0.1204 M in CsOH? CH3NH2(aq) + H2O(l) « CH3NH3+(aq) + OH−(aq)
May 6, 2014

chemistry
What is the [C7H5O2−] in a solution which is 0.1283 M in HC7H5O2 and 0.1364 M in HBr? HC7H5O2(aq) + H2O(l) « C7H5O2−(aq) + H3O+(aq) Ka = 6.5000e-5
May 6, 2014

chemistry
What would Qc be if the volume of the container decreased by a factor of 1.774 for the following reaction? PH3(g) + BCl3(g) → PH3BCl3(s) KC = 534.8 at 353.0oC
May 6, 2014

chemistry
At 2273 K the equilibrium constant for the reaction 2 NO(g) « N2(g) + O2(g) KC = 2400 What would be the equilibrium concentration of N2 if the initial concentration of NO was 0.1778 M?
May 6, 2014

chemistry
At 674.5 K the equilibrium concentrations of N2, H2, and NH3 were 0.1614 M, 0.1128 M, and 0.005892 M, respectively. What is the equilibrium constant for the reaction below? 2 NH3(g) → N2(g) + 3 H2(g)
May 6, 2014

science
explain the Eutectic and Eutectoid reaction in cast irons
April 18, 2014

science
Identify and discuss the main safety legislation applicable to the installation, commissioning operating and maintaining the tube swaging machine.
April 12, 2014

Derivatives
G(t)=5200/(1+12e^(-.52t)) Find G'(t) I keeo getting (-32448e^(-.52t))/(1+12e^(-.52t))^2 Is this correct?
April 2, 2014

Phsyics
In a shipping yard, a crane operator attaches a cable to a 1130-kg shipping container and then uses the crane to lift the container vertically at a constant velocity for a distance of 30 m. Determine the amount of work done by each of the following. (a) the tension in the ...
March 26, 2014

science
what would happen to the impedance of a series circuit containing an inductor, capacitor and resistor if the supply frequency is varied from 0 to infinity Hz
March 25, 2014

Physics
D- Transverse
March 24, 2014

Chemistry
A mixture of NaCN and NaHSO4 consists of a total of 0.60 mol. When the mixture is dissolved in 1.0 L of water and comes to equilibrium the pH is found to be 9.7.
March 9, 2014

Math
A rocket is launched into the sky on a windy day. The rocket has a vertical velocity of 15 m/s. There is a strong wind blowing east to west at 35 m/s. How far from the start point is the rocket after 60 seconds?
February 27, 2014

MATH ALGEBRA
f(x)=6x^3+19x^2+8x-5 find all the zeros of the given function
February 26, 2014

Chemistry
For the reaction given, the value of the equilibrium of the constant at 400 K is 7.0. Br2(g)+ Cl2(g)=2BrCl(g) Does the: Reaction proceed to the left? Reaction proceed to the right? Partial pressure represent a system in an equation?
February 21, 2014

Limits
Let lim f(x) =16 as x->4 and lim g(x) =8 as x->4 Use the limit rules to find lim [cos(pi*f(x)/g(x))] as x->4
February 20, 2014

Math
Salmonella bacteria grows rapidly in a nice warm place. If just a few hundred were left on a cutting board when a chicken was cut up, and they get into the potato salad, the population begins compounding. Suppose the number present in the potato salad after x hours is given by...
February 13, 2014

government
Congress represents the larger public interest by (Points : 1)
February 9, 2014

physics
A car travels 3.0km due west and then 2.0km to the north. Find the magnitude and direction of the car’s resultant displacement?
February 3, 2014

physics
Two boys want to pull a car. One of them exerts a force of 200 N toward West. The other a force of 150 N toward south. What is the net force exerted on the car? (Assume friction to be negligible.)
February 3, 2014

keiser university
$164,712.31
February 2, 2014

geometry
if a 5-foot tall bush casts a 2-foot shadow how tall is a tree standing next to the bush that casts an 8-foot shadow at the same time?
January 7, 2014

chemistry
How many CO2 molecules are formed when 10 methanol molecules react?
December 11, 2013

physics(URGENT!!!!!)
8.01xers Can anybody help with the falling ruler. I submission left(
December 9, 2013

physics(URGENT!!!!!)
A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m= ...
December 8, 2013

physics I'M STUCK PZL HELP
A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m= ...
December 8, 2013

physics Classical Mechanics
Consider a rocket in space that ejects burned fuel at a speed of vex= 1.5 km/s with respect to the rocket. The rocket burns 8 % of its mass in 280 s (assume the burn rate is constant). (a) What is the speed v of the rocket after a burn time of 140.0 s? (suppose that the rocket...
December 8, 2013

physics Classical Mechanics
Hi, guys! What's about doppler shift? Can u tell me formulas?
December 8, 2013

physics(URGENT!!!!!)
Anonymous can u explain c onemore time?
December 8, 2013

Physics Classical Mechanics
@kumar can you explain a)
December 8, 2013

Chemistry
What is the lattice energy of NaI? Use the given information below. Heat of formation for NaI = -288.0 kJ/mol Heat of sublimation for Na = 107.3 kJ/mol Ionization energy for Na = 496.0 kJ/mol Bond dissociation energy for I2 = 149 kJ/mol Electron affinity of I = -295.0 kJ/mol ...
November 22, 2013

Chemistry
Heisenberg's uncertainty principle can be expressed mathematically as Δx*Δp = h/4π, where Δx and Δp denote the uncertainty in position and momentum respectively and h is Planck's constant. What would be the uncertaintry in the position of a ...
November 10, 2013

Chemistry
What is the mass of a fly in grams if its de Broglie wavelength is 1.545e-31 m when it is traveling at a velocity of 3.605 m/s
November 10, 2013

Chemistry
Hydrogen exhibits several series of line spectra in different spectral regions. For example the Lyman series (nf = 1 in Balmer-Rydberg equation) occurs in the ultraviolet region while the Balmer (nf = 2) series occurs in the visible range and the Paschen (nf = 3), Brackett (...
November 10, 2013

Chemistry
Hydrogen exhibits several series of line spectra in different spectral regions. For example the Lyman series (nf = 1 in Balmer-Rydberg equation) occurs in the ultraviolet region while the Balmer (nf = 2) series occurs in the visible range and the Paschen (nf = 3), Brackett (...
November 10, 2013

Physics
elbow raises a 1200 N piano a distance of 5 meters using a set of pulleys. elbow pulls in 20.0 meter of rope while exerting a force of 340 N. a) what is the work output? b) what is work input c) what is the mechanical advantage of this machine? d) what is the efficiency of ...
November 3, 2013

physics
mass of passenger is 90 kg and mass of scale is 40 kg what is scale reading inside an elevator moving at 7.8 m/s2 upward? does the mass of the scale affect the scale reading ?
November 3, 2013

Geomentry
prove the statement Angle ABD is a right angle and Angle CBE is a Right Angle and prove Angle ABC is Congruent to Angle DBE
October 27, 2013

Chemistry
The energy (in joules) of an electron energy level in the Bohr atom is given by the expression: En = -2.179 x 10-18/n2 J where n is the principal quantum number for the energy level. What is the frequency in Hz of the electromagnetic radiation absorbed when an electron is ...
October 21, 2013

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