Thursday

September 3, 2015
Total # Posts: 221

**stats**

A sample has a mean of M = 73 and a standard deviation of s = 5
*June 18, 2015*

**chemistry**

If the theoretical yield of a reaction is 0.173g and the actual yield is 0.165g , what is the percent yield?
*June 15, 2015*

**chemistry**

Stainless steel is an alloy of iron containing 5 percent nickel and 0. 175 percent chromium. How much chromium is present in a 72.2 g sample of this alloy? Answer in units of mol.
*March 13, 2015*

**chemistry**

What is the % carbon by weight in 1.7 grams of potassium carbonate (K2CO3)? Answer in units of %.
*March 13, 2015*

**CHEMISTRY**

How many atoms of carbon are present in 12.9 g of a compound that is 36 .7% carbon, by weight? Answer in units of atoms.
*March 13, 2015*

**Algebra**

The area of a rectangle is 21 ft^2,and the length of the rectangle is 1 ft less than twice the width. Find the dimensions of the rectangle.
*November 3, 2014*

**Kennedy King**

Present Value of an Annuity Sandra and Regina earn the same salary. However, Regina has been far more financially responsible. She pays her bills on time and pays off her credit card debt quickly. Sandra had been less financially responsible. She often buys too many shoes and ...
*October 12, 2014*

**physics**

12400
*October 7, 2014*

**geometry**

Tall and skinny..I found out the base of the triangle is 2.
*June 4, 2014*

**geometry**

The lateral area of the right regular triangular prism is 18 cm^2.Find the total surface area.give your answer in decimal form rounded of to 2 decimal places
*June 4, 2014*

**College Cal 1**

A farmer wants to fence off a rectangular field of area 15000 square feet using barbed wire fencing. SInce the opposite of the road is a corn-field, he wants a two-strand fence along the road, and one strand on each of the other three sides. What are the dimensions of the ...
*April 14, 2014*

**aldrabra**

Write a rule for the linear function in the table. x f(x) –4 16 0 0 4 –16 8 –32 A. f(x) = –4x B. f(x) = x + 16 C. f(x) = 4x D. f(x) = -1/4x
*January 8, 2014*

**science**

pressure
*October 23, 2013*

**math**

how much money do I need to deposit today to end up with 13000.00 in 3 years with interest rate 6.5
*October 7, 2013*

**7th grade pre-algebra**

The problem is a(a-c)=23. Solve for c if both a and c are positive numbers. Thanks
*September 23, 2013*

**5th grade Math**

C is the correct answer because there are 96 more students than there are tickets.
*September 23, 2013*

**Psychology- the Sience of the Mind**

A reflex, like automatically removing your hand from a hot stove, involves pain message sent to the spinal cord by___neurons, while the movement of your hands is controlled by____ neurons. A. somatic ;sensory B. sensory; motor C. motor; sensory D. somatic; sympathetic
*July 2, 2013*

**math**

The first term of a geometric sequence is -2 and the common ratio is 3. What is the 12th term of the sequence?
*May 24, 2013*

**ECU**

that would be c
*April 11, 2013*

**Math**

Well Jaz 15% gose over 100 so but 42 as a fraction at the bottom and then multiply 42x15=630 and divide it by 100 and you get $6.30 so you tip the waiter $6.30
*March 6, 2013*

**Math**

The height of a parallelogram with an area of 300 square yards and a base of 15 yards and 1 more question A rectangle has verticles W(2,3) X (2,6) Y(7,6) and Z(7,3) Describe how to find the side lengths of the rectangle without graphing
*March 6, 2013*

**chemistry**

When the concentration of CH3Br and NaOH are both 0.150M, the rate of the reaction is 0.0020M/S. (a) What is the rate of the reaction if the concetration of CH3Br is doubled? _______________M/s (b) What is the rate of the reaction if the concentration of NaOH is halved? ...
*February 27, 2013*

**Math**

A tree is 15 ft tall. It casts a shadow 20 ft long. an 8 ft elephant approaches. how long will the elephant's shadow be?
*February 26, 2013*

**software**

The questions ask List four major functions of an OS. My answer: Function 1: Provide a user interface Function 2: Manage files Function 3: Manage hardware Function 4: Manage applications Is my answer correct?
*February 12, 2013*

**Software**

So my answer is correct?
*February 10, 2013*

**Software **

The questions said List four major functions of an OS? The answer i put was Function 1: Provide a user interface Function 2: Manage files Function 3: Manage hardware Function 4: Manage applications Is my answer correct?
*February 10, 2013*

**Software**

Is that correct answer for question?
*February 10, 2013*

**Software**

How can you add a program icon to the windows 7 taskbar so the program can quickly be launched at any time?
*February 10, 2013*

**Statistics**

Can you explain confidence intervals as it relates to the results of this obesity study? Results. Of 3069 sampled students, 2681 (87%) were measured. The prevalence of overweight was 43% (95% confidence interval [CI] = 39%, 47%), more than half of whom were obese. Overall ...
*January 7, 2013*

**Finance**

Heinz Corporation bonds carry a coupon of 8% and will mature in 5 years at $1,000. Newly issued 5-year bonds with similar characteristics are yielding 4%. Calculate today's market price of the Heinz bond. Compute your answer, submit all your work, then answer the following...
*December 14, 2012*

**Algebra 2. Please help ASAP**

The pH of a juice drink is 3.8. Find the concentration of hydrogen ions in the drink. A) 3.8 B) 10^-3.8 C) 1.6×10^4 D) 1.6×10^-4
*December 14, 2012*

**Programming Languages- NEED HELP!!**

My teacher said this is not the right. Were doing Raptor Program.
*December 3, 2012*

**Programming Languages- NEED HELP!!**

Create a program that determine the shipping cost for an order based on the following table: From $0.00 $20.00 $50.00 $75.00 To $19.99 $49.99 $79.99 $1000.00 Price $2.95 $3.95 $4.95 Free
*December 3, 2012*

**math**

15 x w + 51 =105 +51 ?
*October 29, 2012*

**Organic Chemistry**

what is the major product of a reaction with 1-butene and Br2 in water?
*October 23, 2012*

**Chemistry**

What is the ionic equation for hydrolysis reaction of NH4C2H2O2 ? Thanks.
*October 22, 2012*

**Math**

Can someone help me to find two numbers the exact answer is between: 6 x 7,381
*October 2, 2012*

**physics**

A boat that travels at a speed of 6.75 m/s in still water is to go directly across a river and back, as shown in the figure below. The current flows at 0.50m/s At what angles must the boat be steered? How long does it take to make the round-trip? (Assume that the boat's ...
*September 13, 2012*

**algebra/trigonometry**

find the smallest positive number that is the difference of two three-digit integers made up of the digits 1, 2, 3, 6, 7, 8 where each digit is used once.
*September 9, 2012*

**math**

1/3 1 /4 . 035 13%greatest to least
*September 5, 2012*

**chemistry**

what is the change in heat when 23.5g water vapor at 100C condenses to liquid 18.50C
*April 26, 2012*

**physics**

b. If you are cruising down the road at 50 mph and a policeman with a radar gun (wavelength 1 cm) reflects radar light off your bumper, what wavelength of radar light does he get back? Assume the policeman is stationary, and you are moving towards him. Light that gets ...
*April 15, 2012*

**math**

I have a surface area? my base is 18m, height is 4m and wisdth is 14m - do not understand the equation given by teacher of: top bottom, both sides and front and back to get answer - this does not make sense to me - please explain
*April 11, 2012*

**physics**

250N,1020N,1.2N
*March 30, 2012*

**Chemistry**

make sure to convert millimolar to molar
*March 14, 2012*

**Chemistry**

Part 1 is A Part 2 is C none of the above
*March 8, 2012*

**physics**

The correct answer is C, A, B
*March 3, 2012*

**math**

a = 19 and m<A=32 degree. find b
*February 7, 2012*

**calculus**

int_(-2)^2sqrt(4-x^2)text()dx evaluate the integral
*February 5, 2012*

**calculus**

int_(-2)^2sqrt(4-x^2)text()dx evaluate the integral
*February 5, 2012*

**math**

what is the largest prime less than 1000? explain how you got ypur answer
*January 25, 2012*

**math problem**

very confused could someone help me with this using the elimination method 5r-3s=16 3r+5s=30
*January 21, 2012*

**Math Problem**

how is it to solve for the indicated leter L = 7F, FOR f
*January 21, 2012*

**math problem**

8x-(6x+7) =-3 42x + 7=-3 42+7-7= -3-7 x=10 42/10 = 4.2
*January 21, 2012*

**math problem**

haveing problem solving 8x -(6x+7)= -3 The solution is x =
*January 21, 2012*

**MATH PROBLEM**

COULD I GET HELP SOLVING THIS PROBLEM USING THE DISTRIBUTIVE PROPERTY 5(W-5)= 10 W =
*January 21, 2012*

**Math Question**

could some help me with this problem Solve and steps -0.5x < -15
*January 21, 2012*

**math question**

solve using additin and multiplication principle 6+8x<22
*January 21, 2012*

**Math question**

Please help me to solve by substitution method. 7x+8y =44 x=41-5y
*January 20, 2012*

**Calculus**

(y/(x+9y))= (x^2)-7 at the point (1, -6/55) Use implicit differentiation to find the slope of the tangent line to the curve
*October 28, 2011*

**Calculus**

Use implicit differentiation to find the slope of the tangent line to the curve 2(x^2) + 2xy + 2(y^3)= -18
*October 28, 2011*

**Calculus**

f(x)= 6ln(2x+7ln(x)) I need to find the first derivative.
*October 28, 2011*

**Chemistry**

24.5 mL of concentrated HCl is diluted to make 455 mL of .256 M solution. What is the molarity of the concentrated HCl?
*October 25, 2011*

**Calculus**

(A) Given that P = {X0, X1, X2.......Xn} is an arbitrary partition of [a,b], find the lower and upper sum for f(x)=x+3. (B) Use your answers to part (a) to evaluate the integral of f(x) from a to b.
*October 16, 2011*

**Calculus**

A right circular cone is inscribed in a sphere of radius r. Find the dimensions of the cone that maximize the volume of the cone.
*October 16, 2011*

**Calculus**

Show that of all rectangles with diagonal length c, the square has the largest area.
*October 16, 2011*

**physics**

ohh.. now i've got it thank you
*October 8, 2011*

**physics**

You are given a vector in the plane that has a magnitude of 86.0 units and a component of -30.0 units. What are the two possibilities for its component?
*October 8, 2011*

**Calculus**

show lim x->3 (sqrt(x)) = (sqrt(c)) hint: 0< |sqrt(x)-sqrt(c)|= (|x-c|)/(sqrt(x)+sqrt(c))<(1/(sqrt(c))*|x-c|
*October 4, 2011*

**math**

the number of my hunderds plus the number of my thousandsin 3. the number of my tens is 7 times the number of my hundreds. the number of my ones is 3 times the number of my thousands. allmy digits are differnt. what number am i ?
*September 28, 2011*

**BUSN**

$1,000,000 and $800,000 respectively
*September 6, 2011*

**geometry**

the surface area of a prism is 120 sqaure cm and the area of each base is 32 square cm find the lateral area of the prism.
*June 21, 2011*

**Math**

How many grams of saline are needed to make 300 ml of 0.9%(w/v) saline?
*June 8, 2011*

**Algebra 2**

Solve the equation 6(3x + 1) = 8. Round the answer to four decimal places.
*June 4, 2011*

**statistics**

A vending machine dispenses coffee into a sixteen ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.03 ounces. You can allow the cup to overfill 10% of the time. What amount (in ounces) should you set as the mean ...
*May 25, 2011*

**science 4grade **

Maybe you meant "compete"? To compete means to try to win or do better than others. Based on your example (which are plants), when they get crowded, the amount of resources intended for them has decreased to a very small amount. This amount cannot sustain their needs...
*May 24, 2011*

**Physics 101**

I figured it out already, thanks. I was just having trouble with converting dB to W/m^2. Anyway, here's my answer. Feel free to correct it. I - Intensity P - Power E - Energy t - time A - Area I = P/A ; I = E/t / A ; E = IAt Io = 1x10^-12 W/m^2 (treshold of hearing) ...
*May 19, 2011*

**Physics 101**

A 90-dB sound is absorbed by an eardrum 0.75 cm in diameter for 2 hours. How much energy in joules does the eardrum absorb at that time?
*May 19, 2011*

**education**

what are strategies that a concerned parent can us to help improve his or her child's reading and writing skills
*May 12, 2011*

**Physics**

explain the concept of electric potential difference in terms of work done in transferring the charge
*April 13, 2011*

**Chemistry I**

If the theoretical yield of a reaction is 0.173g and the actual yield is 0.165g , what is the percent yield?
*April 9, 2011*

**Statistics**

A computer manufacturer is about to unveil a new, faster personal computer. The new machine clearly is faster, but initial tests indicate there is more variation in the processing time. The processing time depends on the particular program being run, the amount of input data, ...
*March 25, 2011*

**Physics**

A patient has a far point of 34.6 cm and a near point of 26.0 cm. What power (in diopters) should be prescribed to give the patient normal vision for: (a) contact lenses? 1) D (b) glasses which are worn 0.9 cm away from the patient's eyes? 2) D
*February 14, 2011*

**management**

Given the following amount of work in seconds required at each station: _____________________ A 38 J 32 X 22 B 34 K 30 Y 18 C 35 L 34 Z 20 a. What is the possibility daily output of this “process” if 8 hours of processing time is available each day?
*January 30, 2011*

**4th grade math**

you find out
*January 10, 2011*

**4th grade math**

help!
*January 10, 2011*

**4th grade math**

53
*January 10, 2011*

**4th grade math**

thank you
*January 10, 2011*

**criminal justice**

what are 2 major influencing factors and how dose federal sentencing guidelines have an effect on these influences
*November 30, 2010*

**chemistry**

what is the molecular mass of a solute if a solution containing 150 g of that solute and 1.0 kg of water has a boiling point of 102.0 degree c? (Kb= 0.512 degree C/m)
*November 28, 2010*

**Math**

there are a lot of them but i chose 1, 4, 8,10
*November 15, 2010*

**physics**

A long jumper jumps with the initial velocity of 12.0 m/s at an angle of 20 degrees. what is the displacement of x?
*November 5, 2010*

**Pearson**

0.0195
*November 4, 2010*

**math**

The carpenter wants to make a dresser based on the dollhouse furniture. The scale is 5\2in : 1ft. The height of the dollhouse is 10in. What is the height of the carpenter's dresser.
*November 3, 2010*

**math**

A building 35ft tall casts a shadow 105ft long .Patty casts a shadow 16.5 ft long. how tall is Patty?
*November 3, 2010*

**math**

thank you !!!
*November 3, 2010*

**math**

A fence post 3ft tall casts a shadow 16ft long . At the same time ,the barn casts a shadow 96ft long. how tall is the barn?
*November 3, 2010*

**calculus**

Find the formula for the described function and state its domain. An open rectangular box with a volume of 8 cubic meters has a square base. Express the surface area of the box as a function of S(x) of the length x of a side of the base.
*October 27, 2010*

**algebra**

what is the average height of a softball that is pitched to a batter from 45 feet away?
*October 19, 2010*

**5th grade SCIENCE**

Why is a short curcuit called a short curcuit?
*October 18, 2010*