Thursday

May 28, 2015

May 28, 2015

Total # Posts: 81,813

**analytical chemistry**

Hi DrBob222. Thank you for your answer However, I feel like this method requires absorbance to plot a graph. Unfortunately, My question does not provide any absorbance data.
*May 8, 2015*

**analytical chemistry**

Hi DrBob222. Thank you for your answer However, I feel like this method requires absorbance to plot a graph. Unfortunately, My question does not provide any absorbance data.
*May 8, 2015*

**English**

What does Guy Montag mean in Fahrenheit 451 when he asks if it has a "happy ending"?
*May 8, 2015*

**Math**

1.B 2.C That's all I know.
*May 8, 2015*

**chemistry**

sketch a graph to show the melting curve for water as it goes from -25.0C to 110.0C. Use temperature on y-axis and time on your x-axis
*May 8, 2015*

**Physics**

(16000/60)x15=4000 m
*May 8, 2015*

**Physics**

we know that speed = distance travelled/time taken.. or , v = d/ t d= v * t Yup; its the correct formula
*May 8, 2015*

**math**

97 is 5% of what number
*May 8, 2015*

**mathematics**

A total of 50 seniors and juniora wwere give amath tesr.the 35 juniors got an average of 80 and 15 seniors got 70.what was average score of all 50 students
*May 8, 2015*

**Psychology**

Compare and contrast the temperament and biological approach and the personality approach with respect to development, causes of behavior, and influences on criminal behavior. Which approach has more of an influence on developing criminal characteristics?
*May 8, 2015*

**English**

#2 is grammatically correct however, #1 is not.
*May 7, 2015*

**jjj**

. If your HIM department has 100,000 active medical records and you received 5,352 requests for records within a six-month period, what is the request rate for the past six months? Round to two decimal points.
*May 7, 2015*

**Math**

The 13-member math club needs to choose a student government representative. They decide that the representative, who will be chosen at random, CANNOT be any of the 3 officers of the club. What is the probability that Samara, who is a member of the club but NOT an officer will...
*May 7, 2015*

**PreCal**

absolute values solve for "x" 2|5x-5|+4=20
*May 7, 2015*

**chemistry**

when calcium carbonate, caco3(s) is heated, it decomposes to form calcium oxide, cao(s) and carbon dioxide gas. how many liters of carbon dioxide will be produced at stp if 2.38 kg of calcium carbonate reacts completely?
*May 7, 2015*

**math**

Oh well thank you, I had a feeling like the first one made more sense.
*May 7, 2015*

**math**

im getting it now but just to make sure, would I subtract 11 from 11 and 26 or subtract 11 from 3 and 26
*May 7, 2015*

**math**

Im confused on how to get x
*May 7, 2015*

**math**

Im so confused now :/
*May 7, 2015*

**math**

nevermind it's 41?
*May 7, 2015*

**math**

x + 7.5 ?
*May 7, 2015*

**math - please answer**

William, Jan, and Greg have a total of $26. Greg has the most money. Jan has twice as much money as William. Greg has $11. How much money does Jan have?
*May 7, 2015*

**math**

William, Jan, and Greg have a total of $26. Greg has the most money. Jan has twice as much money as William. Greg has $11. How much money does Jan have?
*May 7, 2015*

**algbera (check answer)**

Simplify the algebratic expression below. -3[(5x-2y)-4(x+y)+2y]-2(8y-3x) For my answer I got -13x-9y which is wrong because its not in the answer choices.
*May 7, 2015*

**Accounting **

Gorton Corporation has 30,000 shares of $10 par value common stock outstanding when it announces a 2-for-1 stock split. Before the split, the stock had a market price of $120 per share. After the split, how many shares of stock will be outstanding? Common Stock Outstanding? ...
*May 7, 2015*

**science**

please unscramble dramalanse
*May 7, 2015*

**math**

a fisherman has estimated that it takes 4 minutes to paint each square foot of a hull of his boat. How much time should the fisherman allow for the painting of the hull, if the hull were composed of 2 sides 28.5 feet by 10.5 feet?
*May 7, 2015*

**math**

who would you write 36% of what number is 18?
*May 7, 2015*

**Lanuage. Please Help !!!**

if you dont look it up using the link then its the exact same as cheating
*May 7, 2015*

**Calculus**

Find the average value of the function f(x)= 8/ (3+x)^2 on the interval [0,2]
*May 7, 2015*

**Calculus**

A cable that weighs 3 lb/ft. is used to lift a golf cart which weighs 700 lbs up to the deck of a boat which is 300 ft above a loading dock. Find the work done.
*May 7, 2015*

**Calculus**

The region bounded by y= e^x, y=0, x= -1 and x=1 is rotated about the x-axis, find the volume generated.
*May 7, 2015*

**Calculus**

Find the volume of the solid obtained by rotating the region bounded by y= x^(1/3), and y= x about the line y=1
*May 7, 2015*

**Calculus**

Find the volume of the solid obtained by rotating the region bounded by y= x^2, y=0, and x=3 about the x-axis.
*May 7, 2015*

**Math **

Hint: 6% x $1,000,000 / $1,000,000 – {20% x ($1,000,000 – (6% x $1,000,000))] = ?
*May 7, 2015*

**economics**

sick
*May 7, 2015*

**Technology in the classroom**

A software package that you would like to run on your classroom computer list
*May 7, 2015*

**Chemistry**

Zn + 2 HCl = H2 + ZnCl2 / When 25.0 g of Zn reacts, how many L of H2 gas are formed at 25 degrees Celsius and a pressure of 854 mmHg?
*May 6, 2015*

**Math**

Jeanine used 21/2 cups of flour to make muffins and 1 3/4 cups of flour to make biscuits. After borrowing 1/4 cup of flour,she had 2 1/4 cups left to make bread. How much flour did she have to begin with?
*May 6, 2015*

**algebra**

Just use the slope formula. m = rise / run. m = y2 - y1 / x2 - x1 If it's easier for you, label them. (-4 [x1], -3 [y1]), (4 [x2], 3 [y2]
*May 6, 2015*

**Irrational or Not**

You are correct. the square root of two is not a rational number, so twice it is not rational.
*May 6, 2015*

**math**

write 10 1/2% of 60
*May 6, 2015*

**chemistry**

20 g NaOH are dissolved in 1 L H2O. What is the N of the NaOH solution?
*May 6, 2015*

**Algebra**

Thanks - I had a wrong calculation in the first two term problems that gave me the wrong "d", giving me the wrong answers. Thanks for the help.
*May 6, 2015*

**Trig**

Find each value if sin A = 12/13 with 90 degrees <= A <= 270 degrees and if sin B = -7/25 with -90 degrees <= B <= 90 degrees. sin(A - B) sin(A + B)
*May 6, 2015*

**Math**

What is the exact value of sin(-15 degrees)?
*May 6, 2015*

**Life orientation**

Xenophobia is the hatred of foreign people in a country or community seeing them prospering by their own work that we can't even do ourselves
*May 6, 2015*

**Life orientation**

orange farm
*May 6, 2015*

**Pre algebra**

The purchase price of a book is $35.85 the sales tax rate is 6.5% how much is the sales tax to the nearest cent what is the total cost of the book
*May 6, 2015*

**math**

1. two circles. x^2+y^2-16x-8y+35=0 and x^2+y^2=5 are given. a. write the equations in the standard form. b.prove that the circles touch each other. c.hence calculate the equation of their common tangent 2. find the equation of a. circle. with centre c(2;3) and which I is the ...
*May 6, 2015*

**Trig**

secθsinθ is equivalent to: Ans: tanθ?
*May 6, 2015*

**Social Studies**

If you mean WW2, then you are correct. The attack on Pearl Harbor was not in WW1.
*May 6, 2015*

**math**

Suppose the matrix A has eigenvalues lambda_1 = -1, lambda_2 = 1, lambda_3 = 2, with corresponding eigenvectors v_1 = [0 5 3]^T, v_2 = [2 0 1]^T, v_3 = [1 -1 0]^T. If you diagonalize A as A = PDP^-1 with P = [2 2 0; p_21 p_22 2; p_31 p_32 p_33], D = [2 0 0, 0 1 0; 0 0 -1], ...
*May 6, 2015*

**Chemistry**

Use the equation below to answer the following question. How many grams of calcium chloride are produced from 19.3 g of HCl? 2HCl + Ca(OH)2 à 2H2O + CaCl2 Give your answer in correct sig digs and correct label.
*May 6, 2015*

**math**

A. determine the equation of the circle passing through points A(3;2) B(8;12) and C(-6;-2) B. a chord of the circle x^2+y^2=50 has a midpoint at (6;3). determine the equation of this chord.
*May 6, 2015*

**Precal **

Find the limit if it exists. 1. Lim x--> 3 (square root of x+1) -2 over (x-3)
*May 6, 2015*

**chemistry**

226 / 1.7 = 132.94 132.94 x 2.8 = ? Are there any answer choices? It'd be helpful if there was any
*May 6, 2015*

**Chemistry**

(460 x 0.387) (232.0 - 34.5) = 178.02 (197.5) = 35158.95 J
*May 6, 2015*

**math**

Click the second Related Questions labeled statistics in all lower case, it's there for ya.
*May 6, 2015*

**Chemistry**

Evacuated glass ampules is held at 1000 degree C with a perfect vacuum inside.estimate e steady state leak rate per unit area of nitrogen gas into th e ampule.the diffusivity of nitrogen gas is 10^-11 m^2/s.wall thickness of ampule is 0.5 mm.surface concentration of nitrogen ...
*May 6, 2015*

**Math**

51 students?
*May 6, 2015*

**Venezuela **

why did this country fall into dictatorship
*May 5, 2015*

**L.A**

what is the participle phrase int he sentence? Quickly grabbing my lunch, I raced out the door to the bus. A. grabbing my lunch B. I raced C. out the door D. to the bus What is the prepositional phrase in this sentence? Late last night there was a loud knock at the door. A. ...
*May 5, 2015*

**math**

Two boats leave a port at the sametime. The first travels at 15km/hr on a bearing of 135 degree. While the second travels at 2km/hr on a bearing of 63 degree . If after 2hours the second boat is directly North of the first boat, calculate their distance apart.
*May 5, 2015*

**Math**

If the volume of a cone is 1/3 pi r^2 h, then how can it also be 1/3 pi r^3?
*May 5, 2015*

**English**

Can someone please tell me if this poem is in iambic pentameter? I really don't understand it. Thank you. I love a boy who will never be mine. When he speaks, I don't hear anything else. He is like sunshine on a gloomy day. When he laughs it sounds like he is singing, ...
*May 5, 2015*

**MATH ONE QUESTION!**

The student council is making six right triangular pennants to promote school spirit. Each right triangle is 9 inches high and 2 feet long. In square feet, what is the total area of six pennants.
*May 5, 2015*

**LO **

hi I'm new plz help i need I four factors that could threaten or limit the core function of the media
*May 5, 2015*

**English**

(Speech ) English is the language of opportunities. Why bother to teach indigenous languages? I
*May 5, 2015*

**math**

I am trying to find the eigenvalues . They are 0 and 2 but i keep on just getting 0. its a4X4 matrix. [ 1 1 0 0 1 1 0 0 0 0 0 0 0 0 0 0]
*May 5, 2015*

**English**

It is good but not good enough. Do I need a comma before "but"?
*May 5, 2015*

**math**

thanks alot now I understand
*May 5, 2015*

**math**

a. the line y=7x cuts the circle x^2+y^2=50 at A and B. find the coordinates of A and B. b. show that C(5;5) lies on the circle. c. show that ACB angle C=90degrees. what can you deduce about AB? d.find the equation of the tangent to the circle at C
*May 5, 2015*

**geometry**

EF is a median of trapezoid ABCD. If the length of EF is 14x, and the length of CD is 20x, what is the length of AB in terms of x?
*May 5, 2015*

**English**

The passage below contains a total of ten pronouns. How many of the pronouns in the passage below are in the nominative case? "Teach me, O Lord the way of thy statutes; and I shall keep it unto the end. Give me understanding and I shall keep thy law; yea, I shall observe ...
*May 5, 2015*

**Math**

Such that 5 is less than or equal to d is less than or equal to 100. It wouldn't show the sign.
*May 5, 2015*

**Math**

The electrical resistance, r ohms, of 1,000 ft of solid copper wire at 77¡ãF can be approximated by the model r = 10,770 / d^2 - 0.37 for any wire diameter, d mils (1 mil = 0.001 inch), such that 5 ¡Ü d ¡Ü 100. What is the approximate ...
*May 5, 2015*

**Math**

7200 x 186000 = 1339200000 what we do next is round 9 units to the left, which leaves us with 1.34. Scientific notation. Final answer is 1.34 x 10^9. K.
*May 4, 2015*

**Math**

There are 7200 seconds in 2 hours. 2 x 60 x 60
*May 4, 2015*

**Math**

Traveling at approximately 186,000 miles per second, about how many miles does a beam of light travel in 2 hours? F. 3.72 x 10^5 G. 2.23 x 10^6 H. 2.67 x 10^7 J. 6.70 x 10^8 K. 1.34 x 10^9
*May 4, 2015*

**Math**

If the inequality | a | > | b | is true, then which of the following must be true? A. a = b B. a =/ b <----- is not equal sign C. a < b D. a > b E. a > 0
*May 4, 2015*

**eng 122**

what type of language is most effective when making a po
*May 4, 2015*

**geometry**

the Parkers are installing a wooden fence in the back yard they have 330 feet of wood the lip can be no more than 90 feet write and solve equality define the max width of the fence
*May 4, 2015*

**Math**

a right angled triangle has a perimeter of 96.22. if the hypotenuse is 40 cm. how long are the other 2 sides. The answer is 25 and 31.22
*May 4, 2015*

**Math**

a cylindrical cup is made so that the sum of its diameter and its height is 25 cm. find the dimensions of the cup so that the surface area of the cup is a maximum. The answers are. D= 50/3. H=25/3. But how do u get that
*May 4, 2015*

**Math**

The sum of two numbers is 37. The sum of their squares is 756.5. Find the two numbers The answers are 12.5 and 24.5. But I keep getting 44.69 and -7.69
*May 4, 2015*

**Math**

A toy rocket is launched with an initial velocity of 180 m/s. The height of the rocket, in metres, can be modelled by h = –5t2 + 180t, where t is the time in seconds the rocket is in the air. How long will the rocket stay above a height of 1000 m Answer: 22.3 s The answer...
*May 4, 2015*

**Math**

a straight section of railroad track crosses two highways at points that are 400m and 600m, respectively, from an intersection. determine the dimensions of the largest rectangular lot that can be laid out in the triangle formed by the railroad and highways.
*May 4, 2015*

**Chemistry**

1. What is the molar of a sodium bicarbonate solution prepared from 150 g of NaHCO3 in 150 mL solution? 2. What mass of glucose (C6H12O6) is needed to prepare a solution of 10 M, 5 L solution? 3. What volume in liters of a 4.0 M Ca(NO3)2 is needed to provide 50 g Ca(NO3)2?
*May 4, 2015*

**American Goverment**

Yup. You're correct.
*May 4, 2015*

**Math**

Thank you Ms. Sue :).
*May 4, 2015*

**Math**

Do I have to square root 49 and 64?
*May 4, 2015*

**Math**

If a^2 = 49 and b^2 = 64, which of the following CANNOT be a value of a + b? F. -15 G. -1 H. 1 J. 15 K. 113
*May 4, 2015*

**math**

Which hill described in the table is the steepest? (Table) Street: Horizontal (ft): Vertical Rise (ft): Dixie Hill 60 20 Bell Hill 60 40 Liberty Hill 60 30 A. Bell Hill; it rises 2/3 foot for every 1 foot of horizontal travel. B. Dixie Hill; it rises 1 foot for every 3 feet of...
*May 4, 2015*

**Math**

2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30 9: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90 15: 15, 30, 45, 60, 75, 90, 105, 120, 135, 150 so the LCD is 90
*May 4, 2015*

**Math**

I'm sorry. I don't know what I'm doing.
*May 4, 2015*

**Math**

2 x 9 x 5 = 90. I realized my mistake.
*May 4, 2015*

**Math**

Oh. I apologize.
*May 4, 2015*

**Math**

Because 2 x 9 x 15 = 90
*May 4, 2015*

**Math**

Will it be 90?
*May 4, 2015*