Saturday

July 30, 2016
Total # Posts: 441

**Linear Algebra**

Stop cheating for mth2021
*May 8, 2016*

**math**

**In the Figure KE is parallel to LF which is parallel to MG which is parallel to NH etc. Also DK: KL= 2:1 DL:LM = 2:1 DM: MN=2:1 etc If KE = 2 cm , calculate the length of the 10th parallel line,rounded off to one decimal place.(N.B NH is the 4th parallel line)
*April 25, 2016*

**Math**

An Equilateral Triangle Of Side 20cm Is Inscribed In A Circle.Calculate The Distance Of A Side Of The Triangle From the Centre Of The Circle.
*April 25, 2016*

**Math**

a jar contains 26 fluid ounces of spaghetti sauce, how many cups of spaghetti sauce do 4 jars contain?
*April 21, 2016*

**Chemistry**

A chemist reacted 0.05 moles of sodium with water to form 50cm3 of sodium hydroxide solution. Na + H2O -- NaOH + H2 (unbalanced) What mass of sodium was reacted?
*April 7, 2016*

**Art**

Correct!
*April 1, 2016*

**Art**

That is correct!
*April 1, 2016*

**geometry**

What is the ratio of the area of sector AOB to the area of sector COD? 1/3,1/4,1/9,3/8
*March 25, 2016*

**Please help!!**

It's 7,000
*February 21, 2016*

**Physics**

A 25 kg box is dragged across a floor by a rope that makes an angle of 60 degrees with the horizontal. The tension in the rope is 100 N while the box is dragged 15 m. A) how much work is done by tension? B) how much work is done by gravity?
*February 20, 2016*

**math**

A ball is launched from a slingshot. Its height, h(x), can be represented by a quadratic function in terms of time, x, in seconds. After 1 second, the ball is 148 feet in the air, after 2 seconds the ball is 272 feet in the air. Find the height in feet of the ball after 6 ...
*February 16, 2016*

**math**

The large red equilateral triangle has sides of 8x units. The midpoints of the red triangle are joined to form the blue triangle. The midpoints of the blue triangle ate joined to form the green triangle. The process of joining midpoints to form new triangles continues ...
*January 11, 2016*

**math**

The large red equilateral triangle has sides of 8x units. The midpoints of the red triangle are joined to form the blue triangle. The midpoints of the blue triangle ate joined to form the green triangle. The process of joining midpoints to form new triangles continues ...
*January 11, 2016*

**Math**

Construct the 2 x 3 matrix B=[b_ij] where b_ij= (-1)^i+j(i^2-2j)
*November 30, 2015*

**Math**

Thanks :)
*November 30, 2015*

**Math**

Express log z+ 2 log y - 3log x as a single logarithm.
*November 30, 2015*

**ENGLISH**

(before he ate dinner) AND (in the morning)
*November 25, 2015*

**ENGLISH**

1. Joseph ate dessert before he ate dinner. --> Are the capitalized words a phrase or a clause? Answer: Clause. 2. She left early in the morning. --> Are the capitalized words a phrase or a clause? Answer: Phase. IS THIS CORRECT?
*November 25, 2015*

**english**

Define verb tense. Write a sentence that has a simple present tense verb. Rewrite it, changing the verb to simple past tense, simple future tense, each of the perfect tenses, and each of the progressive tenses.
*November 25, 2015*

**math**

if you spend 4/7 of your money and have $15 left how much did you spend
*November 10, 2015*

**Calculus**

For this problem, first draw a 3D rectangle and label the width as "x", the length as "3x" and the height as "y". This will help you visualize the area formulas presented. Area Formulas: Area of top and base= 2(3x)(x)= 6x^2 *This is multiplied by ...
*November 4, 2015*

**Math**

A circular pool 10m wide in diameter has a deck 2m wid around it. What is the area of the deck?
*November 2, 2015*

**Psychology**

An extremely loud noise awakens you; you emerge from sleep confused and do not remember the noise. You were most likely in which stage of sleep. a. Stage 1 b. Stage 2 c. REM d. Stage 4 e. Twilight Sleep
*October 22, 2015*

**Physics**

You testify as an expert witness in a case involving an accident in which car A slid into the rear of car B, which was stopped at a red light along a road headed down a hill (Fig. 1). You find that the slope of the hill is Ɵ = 120 , that the cars were separated by ...
*October 3, 2015*

**algebra**

why is 0.57 considered a rational number?
*September 2, 2015*

**Math**

^^^^^^^ That was me btw :)
*August 13, 2015*

**Math**

Do the following points represent a point on the graph of y=x-4? (0,-4) (5,-1) is this neater?
*August 13, 2015*

**Math**

Do the following points represent a point on the graph of y=x 4? (0.-4) (5,-1)
*August 13, 2015*

**Math**

the half life of a radioactive substance is one day. You have 100 grams. how much of the substance would be left after a week?
*July 30, 2015*

**Chemistry**

Calculate the molarity of a solution made by adding 33.4 mL of concentrated nitric acid (70.4 % by mass, density 1.42 g/mL) to some water in a volumetric flask, then adding water to the mark to make exactly 2000 mL of solution. (It is important to add concentrated acid or base...
*June 23, 2015*

**Chemistry**

Moles of potassium nitrite (in 536g) would be 6.29 or 6.3 moles, correct?
*April 20, 2015*

**Chemistry**

I forgot to add the equation so here it is: 2KNO3(s) ---> 2KNO2(s) + O2(g)
*April 20, 2015*

**Chemistry**

How many grams of potassium nitrate (KNO3) are required to produce 536 g of potassium nitrite (KNO2) according to the equation below? *I've tried this question for so long and I get so many different answers in the end so please help.
*April 20, 2015*

**business**

A proportionate tax consumes a determinate apportionment of one’s monetary flow.
*March 18, 2015*

**Physical Chemistry**

If a 30g piece of ice at -5C is immersed in 125mL of water at 25C in an insulated container... A. Determine the final temperature and final composition of the system B. Determine the entropy changes of the ice and the water and the overall entropy change of this process.
*March 16, 2015*

**math - relations and functions**

What is mean , Write a set of 10 ordered pairs that represent a function?
*February 17, 2015*

**Physics **

An optical fiber is made of a clear plastic with index of refraction n=1.6, For what angles with the surface the light remain contained within the plastic guide?
*January 4, 2015*

**physics**

A stone is thrown into water pond forming 10 waves in 5 seconds. The diameter of the first crest is 13 m and the diameter of the last crest is 4m. Find a.the periodic time b.the frequency c.the wave length d.the wave velocity
*January 1, 2015*

**math**

Classic Furniture purchases dining room sets with an invoice date of September 27, and terms of sale of 3/10, n/60. What is the net date? A) October 17 B) October 22 C) November 2 D) November 26
*December 14, 2014*

**Mechanics **

A 1-kg ball in the air has an initial velocity vo = [ 20 ] i + [ -30 ] j m/s. It falls for a total time of 1 s. Assume that positive x-values are to the right and positive y-values are upward. A)What is the impulse or change in momentum Delta p of the ball? B)What is the final...
*December 5, 2014*

**physics**

The acceleration of gravity is 9.8 m/s 2 . What is the magnitude of the total force on a(n) 87 kg driver by the dragster he operates as it accelerates horizontally along a straight line from rest to 41 m/s in 5.3 s? Answer in units of kN
*November 30, 2014*

**POL 201**

torn between A and C
*November 3, 2014*

**POL 201**

_______ is core to the notion of “life, liberty and the pursuit of happiness” in the Declaration of Independence. (Points : 1) Human agency Pure unfettered liberty the idea that government may never restrict citizens’ liberty the concept of American exceptionalism
*November 3, 2014*

**POL 201**

Thank U
*November 3, 2014*

**POL 201**

If Americans were said to have a positive liberty to work, then the government (Points : 1) may not prevent one from working. is required to provide jobs to those that cannot find jobs. may never pursue a policy that leads to unemployment. must prohibit discrimination in the ...
*November 3, 2014*

**ashford**

Those who attended the Constitutional Convention believed that (Points : 1) England was an evil society. America had made a great mistake in fighting the revolutionary war. British institutions of government were good but they became corrupt. America would only achieve ...
*November 3, 2014*

**math**

In three successive years the price of the common shares of Bedrock Resources Ltd. fell 40%, 60%, and 70% ending the third year at 50 cents. How much (in dollars and cents) did the share price drop in the second year?
*October 27, 2014*

**physics**

A box slides down a 28° ramp with an acceleration of 0.98 m/s2. Determine the coefficient of kinetic friction between the box and the ramp.
*October 12, 2014*

**chemistry**

what could cause the difference in the actual number of mole and the expected number of mole in copper oxide?
*October 7, 2014*

**chemistry**

what is the molar ratio of 0.114 copper to 0.116 oxygen? Then how do you make an empirical formula from this information?
*October 7, 2014*

**chemistry**

in a empirical formula lab how do you calculate the number of moles of Cu in 0.0114 moles of CuSo4*H2O? Thanks
*October 7, 2014*

**calculus**

Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. x+y=4,x=5−(y−1) 2 ;
*October 1, 2014*

**physics**

A hunter wishes to cross a river that is 1.0 km wide and that flows with a speed of 4.9 km/h. The hunter uses a small powerboat that moves at a maximum speed of 9.6 km/h with respect to the water. What is the minimum time necessary for crossing?
*September 28, 2014*

**math**

sum of 3 number is equal 39 , the second number is half of third number ,and the first number less than third number by 1,the result must be 6 degit ?
*September 11, 2014*

**geometry**

Two rectangles are similar. If the height of the first rectangle is 3 inches, and the height if the second rectangle is 9 inches, how much larger is the second rectangle's area?
*July 23, 2014*

**Statistics**

A COMMITTEE OF 5 PEOPLE IS TO BE FORMED FROM 15 PARENTS AND 10 teachers. Find the probability that the committee will consist of at least one parent.
*July 11, 2014*

**chemistry**

which complementary functional group from dopamine would need to be present in the receptor for the interaction to occur.
*May 27, 2014*

**chem**

which complementary functional group from dopamine would need to be present in the receptor for the interaction to occur.
*May 27, 2014*

**chemistry**

i need to find the enthalpy for COF2 F2 (g) + CO (g) --> COF2 (g) i found -507 but i am not sure if it is correct
*May 21, 2014*

**science**

i need to find the enthalpy for COF2 F2 (g) + CO (g) --> COF2 (g) i found -507 but i am not sure if it is correct
*May 21, 2014*

**research**

Thank you
*April 27, 2014*

**research**

So would he research problem be: determining the effectiveness of the electronic monitoring (EM), used for serious offenders supervised in the community?
*April 27, 2014*

**research**

what is the research problem discussed in the article: UNDER SURVEILLANCE: AN EMPIRICAL TEST OF THE EFFECTIVENESS AND CONSEQUENCES OF ELECTRONIC MONITORING? I have read this and I am totally lost. Please help
*April 27, 2014*

**Math**

Given a total profit of p(x) = 1.4x-0.02x^2-20 let x represent a number of days and find profit achieved and when that profit is made
*April 22, 2014*

**criminal justice**

explain the relationship between theory and hypothesis development and testing
*April 19, 2014*

**Chemistry**

.20mol
*April 18, 2014*

**Math**

Abby has 18 blue socks and 4 white socks. How many socks does she need to pull out in order to have a matching pair of socks?
*April 10, 2014*

**Statistics**

a procedure in REGRESSION NALYSIS WHERE PREDICTOR OR INDEPENDENT VARIABLES ARE CODED AS 1 OR 0 (REPRESENTING CATEGORIES) AND CAN BE USED TO PRODUCE ANOVA TABLES UNDER THE GENERAL LINEAR MODEL IS KNOWN AS?
*April 5, 2014*

**physics**

a stone is thrown vertically upward with a speed of 10.5 m/s from the edge of a cliff 76.0 m high. how much later does it reach the bottom of cliff? what is its speed just before hitting? what total distance did it travel
*February 9, 2014*

**POL 201**

The Tenth Amendment balances out national authority by
*January 25, 2014*

**Mathematics**

490
*December 14, 2013*

**math **

1.45-7.3
*October 17, 2013*

**algebra 2**

x + my =d
*September 19, 2013*

**Business Statistics**

3456
*July 28, 2013*

**maths**

find value of p such that the equation (x+1)(x+2)=p
*June 10, 2013*

**calculus**

simplify aab-3/Ba^2b-2
*June 9, 2013*

**Chemistry**

What chemical feature in the protein dictates the local secondary structure? α-helix β-pleated sheet random coils amino acid sequence pH hydrogen bonding
*May 31, 2013*

**Chemistry**

Why does the equation Co(H2O)6 + 4Cl <------> CoCl4 + 6H2O shift left when cooled?
*May 1, 2013*

**Chem--PLEASE HELP 911**

A- 14H + 6Fe^2+ + Cr2O7^2- --> 6Fe^3+ + 2Cr ^3+ + 7H2O B- 3N2H4 +4Cl03- --> 6NO2+ 12Cl- + 6H2O This was all I was able to come up with, am I at lease headed in the right direction?
*April 25, 2013*

**Chem--PLEASE HELP 911**

Balance the following redox reaction and identify the oxidizing and reducing agents A- Fe2+(aq) + Cr2072-(aq) -->Fe3+(aq) + Cr3+(aq) (acidic) B- N2H4(g) + ClO3-(aq) -->NO2(g) + Cl- (basic)
*April 25, 2013*

**CHEM-PLEASE HELP**

Calculate the molar solubility of silver chloride (AgCl) in: a-deionized water and b-.20M NaCl solution Given Ksp=1.6*10^-10
*April 25, 2013*

**Chemistry**

Balance the following redox reaction and identify the oxidizing and reducing agents A- Fe2+(aq) + Cr2072-(aq) -->Fe3+(aq) + Cr3+(aq) (acidic) B- N2H4(g) + ClO3-(aq) -->NO2(g) + Cl- (basic)
*April 25, 2013*

**chemistry**

Calculate the molar solubility of silver chloride (AgCl) in: a-deionized water and b-.20M NaCl solution Given Ksp=1.6*10^-10 please show work.
*April 25, 2013*

**CALCULUS**

Let the line l0 be defined by x = 1−t, y = 2+3t, z = 1−2t. Determine whether each given line intersects l0. If it does, give the intersection point. l1 :x=2+t, y=5−2t, z=1+3t l2 :x=6+2t, y=1+t, z=5+t
*April 24, 2013*

**books**

I need to write a Year 9 English Unit on the novel,"Strange Objects" by Gary Crew. I can't seem to find any resources to assist me. Can you help direct me to finding some???? thanks
*April 23, 2013*

**CHEMISTRY**

Suppose a student adds 25.00 mL of 1.025 M HCl to a 1.50 g antacid tablet. The student boils and then titrates the resulting solution to the endpoint with 0.4969 M NaOH. The titration requires 21.3 mL NaOH to reach the endpoint. How many moles of HCl were neutralized by the ...
*April 23, 2013*

**CHEMISTRY**

If a tablet contains 129 mg of Mg(OH)2 and 505 mg of CaCO3, how many moles of HCl would theoretically be neutralized?
*April 22, 2013*

**Chemistry **

You titrate a 10.0 mL sample of phosphoric acid with a 1.65 M solution of the base potassium hydroxide. It takes 7.55 mL to reach the endpoint of the titration. What is the molar concentration of the original solution of phosphoric acid? 3KOH + H3PO4 --> K3PO4 + 3H2O
*April 13, 2013*

**Chemistry **

A 10 mL sample of 1.5 M Potassium Phosphate is placed in a 100 mL volumetric flask and diluted to the mark. What is the Molar concentration of Potassium ions in this diluted solution?
*April 11, 2013*

**chemistry/science**

That is the question that I was given for homework and it stumped me also. Is it possible that the answer is transition metals. I looked on the periodic chart and found that that is what was possibly inside it. I am confused. Wondering if you could clarify the answer??
*April 4, 2013*

**chemistry/science**

What are the groups of atoms inside iron called?
*April 4, 2013*

**physics**

A slide is 5 inches high. it is placed 5.5 inches from the convex lens of a porjection lantern. The image is cast upon a screen 55 inches away. the focal length of the lens is ______inches? b) the heigh of the image cast by the lens is ________inches?
*March 19, 2013*

**Algebra 2**

Sidewalk of uniform width has area of 180 ft squared and is surrounded ny a flower bed that 11 ft wide and 13 ft long. Find the width of the sidewalk?
*March 17, 2013*

**ecology**

During the demographic transition of the eighteenth century, humankind led advances in mortlity and economy, leading to a prosperous population growth. What types of resources are necessary for population change and how might the availability of resources in different ...
*March 14, 2013*

**sociology**

There is a disparity between theory and direct observation. Because theories are based on observations, how are these theories first developed in the absence of direct observations?
*March 14, 2013*

**chemistry**

A sample of chlorine gas is collected by water displacement at 23C. If the atmospheric pressure is 751 torr, what is the partial pressure due to the chlorine?
*March 14, 2013*

**chemistry**

To raise the temperature of 200.8 g of water from 50.00 °C to 60.00 °C requires how much heat?
*February 28, 2013*

**algebra**

lura has 4 yards of material.she is making clothes for her doll. each dress requires 1/6 yards of material. how many dresses will she be able to make?
*February 27, 2013*