Tuesday
July 26, 2016

Posts by Anonymous

Total # Posts: 98,416

math
For what value of 𝑚 will the polynomial 𝑃(𝑥) = 2𝑥 3 − 𝑚𝑥 2 + 9𝑥 − 11 have the same remainder as when it’s divided by (𝑥 − 2) and (𝑥 + 3)?
July 7, 2016

geometry
Dave had a section of his roof damaged by hail, so he needs to replace the shingles. The roof section can be represented by trapezoid JKLM. How many square feet of shingles must he order?
July 7, 2016

chemistry
To 100 mL of a 0.1M NH3(Kb=1.8*10-5)solution,200mL of a 0.1M NaOH have been obtained.Calculate the pH of the solution.
July 7, 2016

General Math
Jajshsjs
July 7, 2016

pre-calc
A ball is dropped from the top of a 25-m ladder. In each bounce, the ball reaches a vertical height that is 3/5 the previous vertical height.Determine the total vertical distance traveled by the ball when it contacts the ground for the sixth time. Express your answer to the ...
July 7, 2016

Math
The fourth term of a geometric series is 30; the ninth term is 960. Determine the sum of the first nine terms. How do I find t1 and r?
July 6, 2016

Chemistry
correction: no space between amminenitrotrichloride and chromium. sodium amminenitrotrichloridechromium(I)
July 6, 2016

Chemistry
Na3 = sodium, NH3 = ammine, NO2- = nitro, cl3 = trichloride, cr = Chromium Now chromiums charge is -1+(-3)+3+ chromium= 0. chromium is 1. NH3 is a cation, cl is anion, but we use chromium instead of chromate. Sodium amminenitrotrichloride chromium(I).
July 6, 2016

math
how do i simplify 3 square root of 5 end root minus 2 square root of 7 end root plus square root of 45 end root minus square root of 28
July 6, 2016

hialeah campus
Assume that women's heights are normally distributed with a mean of 63.6 and a standard deviation of 2.5 a) If 90 woman is randomly selected, find the probability that they have a mean height between 62.9 and 64.0 inches.
July 6, 2016

math
In K&M grocery store, apples are sold in groups of 3 and oranges are sold in groups of 5. If Mrs. Winter buys 26 apples and oranges in all how many apples does she buy? How many oranges does she buy?
July 6, 2016

Math
I am 5 digit number between 20,000 and 40,000. My ten thousand digit is 6 less than in ones digit and my thousands digit is more than my tens digit. My hundred digit is the sum of my ten thousands digit. What number am I?
July 6, 2016

Delta
According to a previous report, 25% of households had some type of high-speed Internet connection. Suppose 8 households are selected at random and the number of households with high-speed Internet is recorded (a) Find the probability that exactly 3 households have high-speed ...
July 6, 2016

Physics
A neutral solid conducting sphere of radius R has charge Q deposited in it, and is sitting at the centre of a conducting shell of inner radius 2R and outer radius 3R. After the conductor reaches equilibrium, find the potential at R<r<2R at r=R, and at r=R/2, and r=5/2R.
July 5, 2016

home economics
Parts of home economics
July 5, 2016

chemistry
0.02 Moles of HCl were added to a buffer solution, prepared by fluxing 20 L of gaseous NH3 and 10 L of gaseous HCl, both measured in normal conditions, in 2L of water. Calculate the pH of the solution before and after the HCl addition. (Kb NH3 = 1.8 * 10-5).
July 5, 2016

chemistry
Calculate the pH of a solution containing 10 g / L of NH4Cl (Kb NH3 = 1.8x10-5
July 5, 2016

chemistry
To 100 mL of a 0.1M NH3(Kb=1.8*10-5)solution,200mL of a 0.1M NaOH have been obtained.
July 5, 2016

chemistry
Determine the pH of a solution containing 1.00 mol/L of HCN (Ka = 5.00×10–10) and 5.00×10–2 mol/L of HCl.
July 5, 2016

chemistry
Calculate the pH of a solution obtained dissolving 10 g of NH3 and 15 g of NH4Cl in 300 ml of water (Kb NH3 = 1.8 x10-5)
July 5, 2016

Physics
In the 0.97F-67-(36.8-0.052F) = M*0 = 0, where the 0.97 came from?
July 4, 2016

Math
Certain financial aid students must pass 2/3!of their classes in order to continue their aid. If they are taking 18 hours , how many hours do they have to pass
July 4, 2016

ophs
the hat of a clown is in the form of a cone. the slant height of the cone is 15cm and it makes the angle of 45 degree with the height of the hat. what is the diameter of clown's head ?
July 4, 2016

maths
a number consist of two digits of which tens digit exceeds the unis digit by 7 the number itself is equal to 10 times the sum of its digit find the number
July 4, 2016

maths
the digit at the tens place of a two digit number is four times that in the units place if the digits are reversed he new number will be 54 less than the orginal number. find the orginal number
July 4, 2016

math
two number are such that ratio between them is 3:5 find the orginal number
July 4, 2016

Physics
angular momentum of a system of particles
July 3, 2016

maths
the diameter of a biycle wheel is 49 cm. how far will it travel in 50 revolutions?
July 3, 2016

math
a fish with a mass of 4kg causes a fishing pole to bend 10cm. if the amount of bending (b) varies directly as the mass (m), how much will the pole bend for a 7 kg of fish
July 3, 2016

math
thnx
July 3, 2016

science
A lump of ice falls from an airplane as it comes it to land. If the ice hits the ground with a vertical speed of 85 m/s, what was the height of the plane when ice feel off?
July 2, 2016

chemistry
Determine the pH of a solution containing 1.00 mol/L of HCN (Ka = 5.00×10–10) and 5.00×10–2 mol/L of HCl. It will be the best for me if you give me the answer of this problems.
July 2, 2016

chemistry
Calculate the pH of a solution obtained by mixing 50 mL of NH3 0.1 M (Kb = 1.8•10–5 mol/L) and 25 mL of HCl 0.2 M.
July 2, 2016

chemistry
Why and How you took 90 as HCl millimos? Is there any possibility to use ICE table?
July 2, 2016

chemistry
Calculate the pH of 0.3 M HCl solution. Calculate the pH when 100 mL of a 0.5 M solution of NaOH are added to 300 mL of the HCl solution.
July 2, 2016

chemistry
Calculate the pH of a solution obtained by mixing of 100 mL of a 10-3 M and 50 mL of a 10-2 M solution of CH3COONa.
July 2, 2016

maths
the difference of two positive number is 69 the quotient obtained on dividing one by the the other is 4 find the numbers
July 2, 2016

math
one number is 6 more than the other number also 7 times the smaller number is equal to 6 times the larger number find the two numbers
July 2, 2016

science
what is i for glucose
July 2, 2016

Math
It this circumference of a circle is 44cm. find its area
July 1, 2016

Chemistry
Ammonium phosphate and nickel(II) nitrate solutions are mixed, what precipitates out?
July 1, 2016

Chemistry
When the equation below is balanced and all coefficients are in the lowest, whole number ratio, the coefficients are: C2H6 + O2 ¨ CO2 + H2O I am currently doing an online worksheet to improve in chemistry and I am not quite understanding how to find the coefficients ...
July 1, 2016

Chemistry
When the equation below is balanced and all coefficients are in the lowest, whole number ratio, the coefficients are: Bi + O2 ¨ Bi2O3
July 1, 2016

maths
43-12square root7
July 1, 2016

Math
If cotA=3/4find the value of 2sinA-3cosA ÷2sinA - 3cosA.
July 1, 2016

Math
2
June 30, 2016

Math
Mike is paid at a rate of 950 per hour for the first 40 hours worked in a week and one and one half times that rate for all hours over 40 if he works 52 1/4 hours in a week what is his gross pay rounded to the nearest cent
June 30, 2016

chemistry/biochemistry
How can we calculate the HCO3- (bicarbonate ion) concentration in water in 25C pH7.0? I think we can use PV=nRT equation, but I am not sure. If pH is changed from 7.5 to 6.5 ( around pka 6.3 of CO2), how can change the HCO3- concentration? Thanks in advance.
June 30, 2016

English
Actually, I just checked and it WASN'T B.
June 30, 2016

science
The least count of a screw gauge is 0.001cm.the diameter of wire measured by it is 0.225cm.find out percentage error in the measurement.
June 30, 2016

Science
Calculate the no. Off molecules atom in 360gm of water...??
June 30, 2016

math
find the given equation table 4x+y=9 x y1-3 -1 3 2
June 30, 2016

physics
A motorcycle/rider combination has a center of mass that is half a meter diagonally upward and in front of the point of contact between the wheel and the road at an angle of 30 degrees when the bike is level. What acceleration is necessary to keep the bike tilted up stably ...
June 29, 2016

Chemistry
What will the pH of a solution be when 0.5447 L of NaOH (pH = 14.436) is added to 0.357 L of 2.01 M ascorbic acid (H2C6H6O6)? Not sure how to do this.
June 29, 2016

Algebra
My question is related to this algebra question. Could you kindly explain how did you get the father's age? Pls.
June 29, 2016

U.S History
How much did the availability of resources aid in industrialization? Why?
June 29, 2016

Math
Workers in a certain company are required to 8% of their salary into a social security fund. Mr Doe has a monthly salary of GH¢22.00 . How much does he pay into the fund every month? And every year?
June 29, 2016

Algebra
car a leaves phoenix heading north at a constant speed of 40mph car b leaves two hours later and follows car a at a constant speed of 54 mph how many hours does it take car b to catch up to car a? algebra
June 29, 2016

Differential Calculus
It this circumference of a circle is 44cm. find its area
June 28, 2016

math
grassland-29% wilderness-9% urban-2% wetlands-3% forest-30% cropland-17% if humans use half of forest and grassland plus all cropland and urban areas how much land is used by humans. is it 48.5%
June 28, 2016

math
if 2sinx=1,π÷2<x<π and √2cosy=1, 3π÷2<y<2π, find the value of tanx + tany÷ cosx - cosy
June 28, 2016

maths
A projectile is thrown with a velocity of 2om/s at an elevation 30°.Find the greatest height attained and the horizontal range.
June 28, 2016

math
i have four hundreds. i have one more tens than i have hundreds. i have eight ones. what number am i?
June 28, 2016

Physics
How much kinetic energy does the electron gain?
June 28, 2016

Calculus
11522122020
June 28, 2016

Calculus
Use implicit differentiation to find the derivative of y with reapect to x x^2y-y^2+ln(xy)=1
June 28, 2016

rio hondo
f(x)=7x2+x+2
June 27, 2016

english
No one has ever seen me, nor ever will. I never was, but am always to be. Yet everyone waits for me, either in hope or in terror, for they always know I will come. What am I?
June 27, 2016

chemistry
why did you take 0.1M? Why don't you multify with volume in the first step?
June 27, 2016

chemistry
sorry,for the mistake. To 200mL of a 0.1M solution of a CH3COOH (Ka=1.8 x 10-5) 70mL of a 0.2M solution of NaOH have been added.calculate the pH before and after the NaOH addition.
June 27, 2016

literature and the arts
thanks Sue :)
June 27, 2016

Bio
Which of the following best describes the influence of latitude on climate? A. Temperate regions receive more solar energy and heat per unit area than tropical regions. B. Polar regions receive less solar energy and heat per unit area than tropical regions. C. Earth's ...
June 27, 2016

language arts
Which sentences are punctuated correctly? Check all that apply. The cake (that I made for my mother’s birthday) was dark chocolate. The nurse, who was kind and compassionate, bandaged my thumb. F. Scott Fitzgerald was a famous writer—who inspired many great films. ...
June 27, 2016

Math
The nutritionistof FLC Foods, Inc. designed a new product for everybody's consumption and believes that the variable cost in producing the said product is Php950.00 per unit and the fixed cost is Php60,000. Write the total cost as function of the product sold. If the ...
June 27, 2016

yogi science
HOW are all living things alike ?
June 27, 2016

hindi
vigyapan on paints, new hospital opened in your town, musical instruments
June 27, 2016

physics
a car travelling at 60km/h uniformly retards for 10s and reaches a velocity of 45km/h. find the retardation.
June 27, 2016

physics
an object undergoes an acceleration of 10m/s2 starting from rest. find the distance travelled by it in seconds
June 27, 2016

Math
22
June 27, 2016

write a paragraph
produce,reproduce,process,production,assembly line,lead actor,animation,hire
June 27, 2016

math
if 359=sum 17 how can the unknown next number be 966=sum 21
June 26, 2016

music art
The renaissance concided with Van eycks paintings lack any refrencesto this
June 26, 2016

Algebra help
Please help me compute how to draw a graph after I receive the answer. The problem I have is physically connection the graph.
June 26, 2016

Maths
The measure if one angle of a parallelogram is 25 degree . Find the measures of the other 3 angles
June 26, 2016

chemestry
To 400mL of a 0.1 M CH3COOH solution(Ka=1.8 x 10-5),two subsequent additions of 100mL of 0.2 M NaOH solution have been done.determine the solution pH after each addition. Drbob,I don't understand this problem how to solve.Can you help me and give me the full calculation.
June 26, 2016

Math
When the teacher buys tennis rackets for his gym class, he must buy five more than three times as many tennis balls. Rackets cost $20 each and ball cost $1.50 each. How much does the teacher spend if he needs 17 tennis rackets?
June 25, 2016

biology
31. A student conducts an investigation in which she dissolves 1 gram (g) each of several substances in 50 milliliters (ml) of water. She has 12 identical plastic cups of water. She places 1 g of salt in three cups, 1 g of sugar in three cups, and 1 g of baking soda in three ...
June 25, 2016

Chemistry
64g of oxygen reacts completely with methane gas to form 44g of carbon dioxide gas and 36 g of water vapour. Calculate the amount of methane that takes part in the reaction .
June 25, 2016

Math
If 2 times the square of a number is equal to the 6 times the number,find the number
June 25, 2016

chemestry
calculate the pH of the 120mL of a 0.12 M HCOONa,Ka=1.8*10^-5,solution are added to 50mL of a 0.05 M H2SO4 solution.Determine the pH of the sodium formate solution before and after the H2SO4 addition. please someone help me!
June 25, 2016

pysics
128 km/hr * 1 hr/3600 s * 1000 m/km 128 km/hr * 0.62137119224 mi/km
June 25, 2016

physics
work done against gravity = 50*9.81 *20 total work done, add 200 J to above efficiency = 100 * work against gravity/total work I do not know tension in line because I do not know how your five blocks are arranged.
June 25, 2016

physics
v = total v - watr v vx = 3 - -3 = 6 vy = 4 - -4 = 8 so 6 i + 8 j
June 25, 2016

Physics
What is net capacitance if maximum potential is 40 volt and instant charge is 60 coulomb.?
June 25, 2016

algebra
Ryan throws a tennis ball straight up into the air. The ball reaches its maximum height at 2 seconds. The approximate height of the ball x seconds after being thrown is shown in the table. Which equation models the motion of the ball?
June 24, 2016

math
Your car gets 21 miles to the gallon and your friends car gets 28 miles to the gallon? you decide to go on a road trip to UVA, which is 175 miles away. if gas costs $4 per gallon and you decide to split the gas money, how much money will each of you save in gas by driving your...
June 24, 2016

math
is it 1.0038x10^2
June 24, 2016

math
a 1 million sq mile d\forest is how many hectares?
June 24, 2016

math
how much would $500 invested at 4% interest compounded continuously be worth after 7 years? Round your answer to the nearest cent. Do not include units in the answer.
June 24, 2016

math
Dimensional Analysis 8.9x10^5 tons=_____ kg i need to show my work but I don't understand where to start.
June 24, 2016

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12
  15. 13
  16. 14
  17. 15
  18. Next>>