Sunday

July 24, 2016
Total # Posts: 409

**Chemistry**

1.06g of Na2CO3 is dissolved in water to make 250cm^3 solution. 10.0 cm^3 of this solution was further diluted to make 500cm^3 of 2nd solution. 25.0cm^3 of 2nd solution reacted with 28.5cm^3 of HCl. Find the concentration of HCl in mol/dm^3
*July 14, 2016*

**Chemistry**

4.80 dm^3 of chlorine gas was reacted with NaOH solution. a) how many moles of Cl2 reacted b) what mass of NaOCl was formed? c) if the concentration of the NaOH was 2.00 mol/dm^3. What volume of sodium hydroxide solution was required? d) write an ionic equation for this reaction
*July 12, 2016*

**Chemistry**

A 1.00 g sample of limestone is allowed to react with 100 cm^3 of 0.200 mol/dm^3 HCl. The excess acid required 24.8 cm^3 of 0.100 mol/dm^3 NaOH solution. Calculate the percentage of calcium carbonate in the limestone
*July 10, 2016*

**geometry**

what would tan be for -1^(9)to the nearest degree? and what would sin -1^(0.62) be to the nearest degree?
*June 25, 2016*

**Maths**

What is there answer
*April 27, 2016*

**politcal science**

As of January 2015, how many members of the House of Representatives and the Senate are NOT members of the Democratic or Republican party? 0 123 100 2
*March 20, 2016*

**politcal science**

Which of the following is NOT one of the Republican party factions? Fiscal Conservatives Libertarians Organized labor Neoconservatives
*March 20, 2016*

**politcal science**

Who is the only third-party candidate to win more than 25% of the popular vote? Question 7 options: Millard Fillmore Theodore Roosevelt George Wallace Ralph Nader
*March 20, 2016*

**politcal science **

In Washington's Farewell Address, what type of policy did he advocate when dealing with foreign countries? Question 6 options: Complete isolation for all foreign countries Extensive treaties with other countries Expansion of US power over foreign countries Neutrality in ...
*March 20, 2016*

**Chemistry**

How is 4FeS2 + 11O2 = 2Fe2O3 +8SO2 a single replacement reaction?
*March 1, 2016*

**Chemistry**

The solidified carbon dioxide, dry ice, is used as the refrigerant to temperatures of 78 °C order What physical state of carbon dioxide at 25°C and 1 atm?
*January 20, 2016*

**Math**

Thank you so much Ms. Sue Glad you are here for use ! God bless you
*January 4, 2016*

**Math**

You are ordering a meal and have $15 to spend . The restaurant charges 6% sales tax. You plan to leave a 15% tip . The equation C = x + 0.06x + 0.15x gives the total cost C of your meal , where x is the cost before tax and tip . What is the maximum amount you can spend before ...
*January 4, 2016*

**Math**

The standard graph in polar coordinates has E at 0' ( o degree ) . The makes N 38 E would be 90'- 38' = 52' and S 47 E at 2700'+ 47'= 314' , or -46 . The difference in angle between the two is 53+46= 99' At 6 PM , two hours have passed . This ...
*January 3, 2016*

**Calculus**

The balance in an account triples in 20 years. Assuming that interest is compounded continuously, what is the annual percentage rate? I found the equation: y=e^(xln3/20) assuming that y0=1 I got 5.64%, is that right?
*December 28, 2015*

**Math**

IF I INVESTED 100 MILLION DOLLARS IN A 4.5 % CD FOR 2 YEARS HOW MUCH WOULD IT BE WORTH AFTER 2 YEARS.
*December 18, 2015*

**algebra**

'<' means smaller than...so what you said is x is smaller than 5000 which means you didn't exceed 5000 which is what the question is asking for.
*October 16, 2015*

**Thermochemistry**

For the combustion of 100. gm of methane, how much heat would be generated?
*September 6, 2015*

**math **

If the path from park rangers station to camp ground is 0.55 miles determine and state to the nearest hundred of a mile.
*June 2, 2015*

**Chemistry**

Give the molecular formula for the following: 1)Methoxy methane 2) Methoxy Ethane 3) Ethoxy ethane
*May 24, 2015*

**English**

passionate and opinionated
*May 22, 2015*

**Chemistry**

What?
*May 14, 2015*

**Calculus**

Let g be a function that is defined for all x, x ≠ 2, such that g(3) = 4 and the derivative of g is g′(x)=(x^2–16)/(x−2), with x ≠ 2. a.Find all values of x where the graph of g has a critical value. b.For each critical value, state whether the ...
*May 8, 2015*

**Physics**

If ∆Q is the heat supplied to a gas so that the internal energy of the system increases by ∆U, then the work done ∆W by the gas is equal to: ∆Q – ∆U ∆Q + ∆U ∆Q x ∆U ∆U/∆Q
*May 8, 2015*

**Calculus**

The local linear approximation of a function f will always be greater than or equal to the function's value if, for all x in an interval containing the point of tangency f '(x) < 0 f '(x) > 0 f "(x) < 0 f "(x) > 0
*May 7, 2015*

**Calculus**

If f is a function such that [(f(b)-f(a))/(b-a)]=2 , then which of the following statements must be true? a.f(a) = f(b) = 2 b.The slope of the tangent line to the function at x = a is 2. c.The average rate of change of the function on the interval [a, b] is 2 d.The linear ...
*May 7, 2015*

**Calculus**

True or False If f is continuous at x = c, then f is differentiable at x = c.
*May 7, 2015*

**Calculus**

The local linear approximation of a function f will always be greater than or equal to the function's value if, for all x in an interval containing the point of tangency f '(x) < 0 f '(x) > 0 f "(x) < 0 f "(x) > 0
*May 7, 2015*

**POLS210 D001**

Please I am in desperate need of finding the answer to pop quiz 4,6,and 8 please is there anyone out there that could help me.
*April 22, 2015*

**Statistics**

Suppose a random family of four is selected (two parents and two children). Suppose further that you are told one of the two children is a girl. Given that this family has at least one daughter, what is the conditional probability that it also has a son? (HINT: write out the ...
*April 19, 2015*

**Elementary Statistics**

10. In a game of “chuck a luck” three dice are rolled. If your number comes up on all three dice you win $3. If your number comes up on two dice you win $2. If your number comes up only once you win $1. If your number doesn’t come up at all you lose $1. a) What ...
*April 19, 2015*

**Health**

yes it is C , I got it right
*April 14, 2015*

**math**

This is a continuous from my last question Let g be a function that is defined for all x, x ≠ 2, such that g(3) = 4 and the derivative of g is g′(x)=(x^2–16)/(x−2) with x ≠ 2. On what intervals is the graph of g concave down? Justify your answer. ...
*March 18, 2015*

**math**

Let g be a function that is defined for all x, x ≠ 2, such that g(3) = 4 and the derivative of g is g′(x)=(x^2–16)/(x−2) with x ≠ 2. Find all values of x where the graph of g has a critical value. For each critical value, state whether the graph of...
*March 16, 2015*

**math**

True or false? If f is continuous at x = c, then f is differentiable at x = c.
*March 11, 2015*

**math**

Which of the following is the best linear approximation for f(x)equals sin(x) near x equals =π seconds? y=-x+pie-1 y=-1 y=-x-pie y=-x+pie
*March 11, 2015*

**Math**

What is the answer to ( what is the combined height of 3 nickels, 2 nickels, and 1 nickel?
*March 10, 2015*

**Calculus**

For which pair of functions f(x) and g(x) below will the lim f(x)/g(x)equal 0 x-infinity f(x) e^x; g(x) = x^3 f(x) x^5; g(x) = e^x f(x) x^3; g(x) = ln(x) f(x) x^negative 2; g(x) = e^negative x
*March 10, 2015*

**math**

The height of a cylinder with a fixed radius of 10 cm is increasing at the rate of 0.5 cm/min. Find the rate of change of the volume of the cylinder (with respect to time) when the height is 30cm.
*March 9, 2015*

**math**

A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = (x^2)h cm^3. Find the rate at which the volume of the box is changing when the edge length of the base is 10 cm, the edge length of the base is ...
*March 9, 2015*

**math**

Is the answer 5?
*March 6, 2015*

**math**

A particle moves along the x-axis so that at any time t, measured in seconds, its position is given by s(t)equals = 5cos(t) minus- sin(3t), measured in feet. What is the acceleration of the particle at time t =equals π seconds?
*March 6, 2015*

**math, physics**

The driver of a car traveling at 60 ft/sec suddenly applies the brakes. The position of the car is s(t) equals 60t minus - 1.5t^2, t seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop?
*March 6, 2015*

**math**

Would the answer be 2000 to this? with 1,200 i got 4,000? If 600cm^2 of material is available to make a box with a square base and a closed top, find the maximum volume of the box in cubic centimeters.
*March 6, 2015*

**Math**

If 1,200 cm^2 of material is available to make a box with a square base and an open top, find the maximum volume of the box in cubic centimeters. Answer to the nearest cubic centimeter.
*March 6, 2015*

**Math**

A farmer has 2,400 feet of fencing and wants to fence off a rectangular field that borders a straight river. He needs no fence along the river. Write the function that will produce the largest area if x is the short side of the rectangle.
*March 5, 2015*

**Math**

What is the area of the largest rectangle with lower base on the x-axis and upper vertices on the curve y equals= 12 minus x^2?
*March 5, 2015*

**Math**

Thank you!
*March 5, 2015*

**Math**

provide one of the two positive integers whose sum is 200 and whose product is a maximum.
*March 5, 2015*

**Calculus**

1) A rectangular page is to contain 16 square inches of print. The page has to have a 2-inch margin on top and at the bottom and a 2-inch margin on each side. Find the dimensions of the page that minimize the amount of paper used. 2) A rectangular garden of area 480 square ...
*March 5, 2015*

**Problem Solving**

Michael has designated 5% of his paychecks for the year for presents (birthday, Monther's day, etc.) Write a solution to calculate the amount of money he can spread give the amount of money he earns.
*February 28, 2015*

**Health**

it's D .
*February 18, 2015*

**math**

Nicole is making a bowl of chex mix to serve her guests.She has already put 45 cups of nuts.410 cups of raisins and 112 cups of chocolate chips in the bowl,If she wants to make four cups total, how much chex cereal will she need to add?
*February 9, 2015*

**pre calculus **

12. Use the remainder theorem to find P (-2) for P(x) =x^3+2x^2-x-7. Specifically, give the quotient and the remainder for the associated division and the value of P (-2). Quotient =? Remainder =? P (-2) =?
*January 30, 2015*

**Biology Help Please**

All of the Above Source - Finished my quiz with that same question and got it right.
*January 2, 2015*

**Health**

for your answer alley it is B , this is really easy I think you posted this on purpose .
*December 9, 2014*

**1210 Math**

A projectile follows a parabolic path whose height, in meters, is given by the function f(x) =-x^+2x+2, find the maximum horizontal distance that the projectile may cover
*November 16, 2014*

**Math**

there are 60 pieces of ribbon
*November 10, 2014*

**Math**

yes Amy you are correct
*November 10, 2014*

**algebra**

solve the equation for x -2(2x-2)=2x for y 9x+y=9 solve theinequality 2x-6<8x+18 solve 0.14-0.01(x+2)=-0.02(3-x)
*November 8, 2014*

**Health**

Jamie , i'll follow your answer and hope you right dude
*November 6, 2014*

**sixth grade math**

a) 24 cups pineapple (4x6) 48 cups orange juice (8x6) 72 cups seltzer (12x6) b) 81 servings If 12 cups = 9 servings Then 108 cups = 81 servings 12 x 9 = 81 c) ??? .75
*November 4, 2014*

**math**

Given: 20,000 shares cumulative preferred stock ($2.25 dividend per share): 40,000 shares common stock. Dividends paid: 2013, $8,000; 2014, 0; and 2015, $160,000. How much will the preferred stockholders and the common stockholders receive each year?
*October 21, 2014*

**CHEMISTRY**

what do you observe on the seawater where ships dock? Explain in relation with attractive forces and surface tension..
*October 7, 2014*

**trig**

I really have no idea how to find the theta of the angles, help please
*October 6, 2014*

**trig**

The centers of two belt pulleys, with radii of 3 cm and 6 cm, respectively, are 13 cm apart. Find the total area K enclosed by the belt.
*October 6, 2014*

**Health**

Thanks guys for posting this , its really help me . Thanks Ms.Sue , Jackie , audra .
*August 27, 2014*

**Math 114**

I have x=58.8
*August 26, 2014*

**Math 114**

a store mixes kenyan coffee worth $11 per kilogram and turkish coffee worth $13 per kilo gram. The mixture is to sell for $12 per kilogram. Find how much of each should be used to make a 588 kilo mixture.
*August 26, 2014*

**Health Part 2**

yes , it is A
*August 18, 2014*

**Health Part 2**

you guys right , it's D Trust me !
*August 18, 2014*

**Health Part 2**

i'll try that , D . thanks
*August 18, 2014*

**Science**

It is when beavers reproduce and do it hard
*July 2, 2014*

**health**

thank you guys
*June 20, 2014*

**maths**

A car and a van started from two cities at the same time and travelled towards each other at steady speeds. The car took 4 hours to cover the distance between the two cities and the van took 6 hours. After what amount of time did they pass each other? 4.
*June 12, 2014*

**chemistry**

If 5.6 grams of potassium hydroxide is added to enough water to make 950 ml of solution, what is the concentration of the potassium?
*June 1, 2014*

**Health **

It is AAAAA people
*May 20, 2014*

**alegbra**

Use a calculator to evaluate an ordinary annuity formula A = m [ 1+ r over n ^nt -1] than rn is under--____________________ r over n for m, r, and t (respectively). Assume monthly payments. (Round your answer to the nearest cent.) $150; 6%; 40 yr A = $
*May 12, 2014*

**alegbra**

Find the future value, using the future value formula and a calculator. (Round your answer to the nearest cent.) $990 at 5.5% compounded quarterly for 3 years Find the present value, using the present value formula and a calculator. (Round your answer to the nearest cent.) ...
*May 12, 2014*

**alegbra**

The learning curves describes the rate at which a person learns certain tasks. If person sets a goal of typing N words per minute (wpm), the length of time t (in days) to achieve this goal is given by a) according to this formula what is the maximum number of words per minute...
*May 11, 2014*

**alegbra**

Write the equations in logarithmic form. 25=(1/5)^2 thanks for the help.
*May 11, 2014*

**alegbra**

An artifact was found and tested for its carbon-14 content. If 75% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.) thank you
*May 11, 2014*

**ALGEBRA**

t = - 6.25 In ( 1 N over 80) according to the formula what is the maximum number of word per minute. Round off to the nearest whole number. Solve N
*May 11, 2014*

**ALGEBRA**

the atmosphere pressure P in pounds per square inch (psi) is given by P=14.7e upper o.21a where a is the attitude above sea level in miles. If a city has an atmosphere pressure y 13.29 psi what is its altitude. Recall that one mile = 5,280 feet. Round to the nearest feet
*May 11, 2014*

**math trigonometry**

At night, a security camera pans over a parking lot. The camera is on a post at point a which is 53m from point c and 71 m from point b.the distance from B to c is 68m. Calculate the angle through which the camera pans
*April 14, 2014*

**math trigonometry**

At night, a security camera pans over a parking lot. The camera is on a post at point a which is 53m from point c and 71 m from point b.the distance from B to c is 68m. Calculate the angle through which the camera pans
*April 14, 2014*

**math**

Maya chatted online with all her friends for 2/3 of an hour on saturday and 1/4 of an hour on sunday.During that time period she chatted with Paul for 1/8 of an hour. What fraction of the time Maya spent chatting with her friends online was spent chatting with Paul?
*April 13, 2014*

**PHYSICS**

100turns of insulated wire are wraped around a wooden cylindrical core of cross-sectional area 12cm2. The two ends of the wire are connected to a resistor. The total circuit resistance is 13Ω. If an externally applied uniform magnetic field along the core changes from 1....
*April 9, 2014*

**Physics**

A long, ideal solenoid has a diameter d=12cm and n=1200turns/meter carrying current I=20A. If the current is lowered at 4.33amp/s to zero, what is the magnitude of the induced electric field in V/m at a position 8.2cm from the solenoid's axis
*April 9, 2014*

**physics**

A long, ideal solenoid has a diameter d=12cm and n=1200turns/meter carrying current I=20A. If the current is lowered at 4.33amp/s to zero, what is the magnitude of the induced electric field in V/m at a position 2.2cm from the solenoid's axis (so at a point inside the ...
*April 7, 2014*

**physics**

100turns of insulated wire are wraped around a wooden cylindrical core of cross-sectional area 12cm2. The two ends of the wire are connected to a resistor. The total circuit resistance is 13Ω. If an externally applied uniform magnetic field along the core changes from 1....
*April 7, 2014*

**physics**

A long, ideal solenoid has a diameter d=12cm and n=1200turns/meter carrying current I=20A. If the current is lowered at 4.33amp/s to zero, what is the magnitude of the induced electric field in V/m at a position 8.2cm from the solenoid's axis (so at a point outside the ...
*April 7, 2014*

**physics HELP**

is the radius of the cable or of the axis to the point p?
*April 7, 2014*

**health**

MS. Sue not really helpful because she/he give me a website to read that can take me 3 days , why don't she/he just give the answer . by the way thank you Ms. Baker
*March 26, 2014*

**health**

C _ Weigh loss
*March 18, 2014*

**One Ordinary Day by Shirley Jackson--Please, help!**

What is the figurative language of the story
*March 3, 2014*

**Math**

There are boxes without tops. Find the box with the least surface area for a given volume, V. Make a diagram (if you can). Hint: Volume=x^2y Area=x^2+4xy
*February 22, 2014*

**math**

The base of the lamp of a triangular prism with an equilateral triangle base . The surface of the stand is to be painted.what is the area that will be painted?Give the answer to the nearest whole number.
*February 19, 2014*

**Calculus I**

If x^2+y^2=25, find dy/dt when x=3 and dx/dt= -8.
*February 12, 2014*