Friday

March 6, 2015

March 6, 2015

Total # Posts: 172

**Math**

16.5
*January 21, 2015*

**7th grade math**

Joel and two friends went to the movies. They each bought a medium popcorn. Altogether, they spent $45. Write and solve an equation to determine how much each boys spent on a movie ticket?
*December 6, 2014*

**Physics**

i throw a banana vertically up into the air at an intial speed of 10m/s it accelerates down at 10m/s/s calculate the maximum height of the banana? I know you have to use suvat equations In this question but I don't understand how you get enough values in order to do this? ...
*November 27, 2014*

**Physics**

A car of mass 900 kg pulls a caravan of mass 400 kg along a straight horizontal road with an acceleration of 2 ms-2. Assuming that the frictional forces are negligible, the tension in the coupling between the car and caravan is
*November 9, 2014*

**Chemistry**

In the following reaction, 28 grams of Calcium Oxide CaO reacts with Carbon Dioxide CO2 to produce Calcium Carbonate CaCO3. How much Calcium Carbonate is produced? CaO+CO2 ---> CaCO3
*June 19, 2014*

**English**

"Most people think of bamboo as a tree or a bush." Is the verb transitive or intransitive? I think I see from other posts it is transitive but why? Where is the direct object?
*November 7, 2013*

**Calculus (integrals)**

Find the integral:8x^7+6/(x^8+6x)^2 I got ln(x^8+6x)^2 but apparently that is wrong.
*October 29, 2013*

**math **

If f(x+y)=f(x)+f(y)+5xy and lim f(h)/h =3. h»0 Find f'(x)
*October 22, 2013*

**physics**

A rocket moves upward, starting from rest with an acceleration of 28.1 m/s2 for 4.76 s. It runs out of fuel at the end of the 4.76 s but does not stop. How high does it rise above the ground?
*October 16, 2013*

**Math**

Norma borrowed $1,800 at 11% interest for 90 days. How much interest did she pay on the loan? a. $49.50 b. $198 c. $2 d. $18.45
*October 8, 2013*

**Calculus derivative**

find the slope m and an equation of the tangent line to the graph of the function f at the specified point. original: x^2/x+10 point: (3,9/13) After I found the derivative: (x+10)(2x)-(x^2)(1)/((x+10))^2 How do I get the slope? Should I put 3 into the derivative equation?
*September 17, 2013*

**calculus (derivativs)**

does that go into the derivative equation or the original?
*September 17, 2013*

**calculus (derivativs)**

Find the points on the graph of f where the tangent line is horizontal. original: x/x^2+25) After I did the quotient rule I got: (x^2+25)(1)-(x)(2x)/((x^2+25))^2 Then of course I know you set that equal to 0, but I do not know how to set it up or "finalize" the ...
*September 17, 2013*

**Calculus (derivatives)**

Find the points on the graph of f where the tangent line is horizontal. x/x^2+25 I know you have to do the quotient rule to find the derivative, but then I do not know what to do after that.
*September 17, 2013*

**calculus**

find the points on a graph of f where the tangent line is horizontal. f(x)= x^3 - 18x^2 (x,y)= (smaller x value) (x,y)= (larger x value)
*September 8, 2013*

**Calculus**

The management of the Titan Tire Company has determined that the quantity demanded x of their Super Titan tires/week is related to the unit price p by the relation P=132-x^2 where p is measured in dollars and x is measured in units of a thousand. Titan will make x units of the...
*April 10, 2013*

**calculus**

Find the integral. x^4/the square root of (x^5-1)
*March 24, 2013*

**calculus**

Find the point on the graph where the tangent line is horizontal. x/(x^2+25) I know you have to do the quotient rule to find the derivative of the function, but I do not know what to do after that.
*March 16, 2013*

**calculus**

By cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an open box may be made. If the cardboard is 14 in. long and 6 in. wide, find the dimensions of the box that will yield the maximum volume. (Round your ...
*March 16, 2013*

**calculus**

F(x)= ln ((3t + 1)^4 / (2t + 1)^3) F'(x)=
*February 27, 2013*

**Calculus**

F(x)= ln ((3t + 1)^4 / (2t + 1)^3) F'(x)=
*February 24, 2013*

**math**

what is the rule for this in/out table? (4,-1), (5.-2), (6,-3), (7,-4) i need help ASAP
*February 21, 2013*

**Physics**

If a small planet were located 7 times as far as the Earth's distance from the Sun, it period is ___ earth years?
*February 14, 2013*

**Physics (Formula)**

A string requires a 191.0 N force in order to break. A 1.75 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.92 m. The maximum speed that this mass can be whirled without breaking the string is Again I just need the formula!
*February 13, 2013*

**Physics (Formula)**

I just need the formula. A 2.5 kg object is whirled in a vertical circle whose radius is 0.89 m. If the time of one revolution is 0.94 s, the magnitude of the tension in the string (assuming uniform speed) when it is at the top is
*February 13, 2013*

**math**

For 2004 t is 2 and sub it into the equation and 2005 t is 3.
*February 13, 2013*

**math**

Area of a rectangle is lxw 5301=lx57 l=5301/57
*February 13, 2013*

**Physics**

A string requires a 191.0 N force in order to break. A 1.75 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.92 m. The maximum speed that this mass can be whirled without breaking the string is Again I just need the formula!
*February 13, 2013*

**Physics**

A 2.5 kg object is whirled in a vertical circle whose radius is 0.89 m. If the time of one revolution is 0.94 s, the magnitude of the tension in the string (assuming uniform speed) when it is at the top is I just need the formula and it doesn't even have to be manipulated.
*February 13, 2013*

**hurry bedtime**

8.9
*February 12, 2013*

**Physics**

A 2.5 kg object is whirled in a vertical circle whose radius is 0.89 m. If the time of one revolution is 0.94 s, the magnitude of the tension in the string (assuming uniform speed) when it is at the top is
*February 12, 2013*

**Physics**

Thanks so much!
*February 12, 2013*

**Physics**

A student has a weight of 650 N. While riding on a roller-coaster this same student has an apparent weight of 1.97 x 103 N at the bottom of a loop that has a radius of 17.0 m. The speed of the roller-coaster is I just need the forumla, doesn't even have to be manipulated.
*February 12, 2013*

**Physics**

A string requires a 191.0 N force in order to break. A 1.75 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.92 m. The maximum speed that this mass can be whirled without breaking the string is
*February 12, 2013*

**Math**

Seven days in a week.. Eight hours a day... 7 x 8
*February 12, 2013*

**math**

The top is 30 and the bottom is 10 30/10 so 3
*February 12, 2013*

**physics**

calculate the acceleration of 2kg block on a horizontial friction-free air table when you exert a horizontal net force of 20N.
*February 7, 2013*

**Phsysic**

Calculate the acceleration of a 2kg block on a horizontial friction-free air table when you exert a horizintial net force of 20N
*February 7, 2013*

**emperature**

At six a.m, the temperature outside is 12 degree celsius. By noon, the temperature is 5 degree celsius warmer. What is the temperature at noon?
*January 29, 2013*

**statistics**

a research wanted to test a new diabetes drug: what level of significance would she use in testing?
*December 23, 2012*

**algebra 2**

x^3+6x^2+20x+24
*December 7, 2012*

**algebra**

You are planning an ornamental garden that has a total area of 200 square feet. There are two sizes of ornamental plants you have chosen for your garden. Each small plant requires 2.5 square feet of space and each large plant requires 8 square feet of space. This situation can...
*November 26, 2012*

**Physics**

f= m . g(acceleration(a)) a=f/m a= 82N/31 kg =2.65 ms2
*October 9, 2012*

**chemistry**

Can you write me the reaction, please?
*May 21, 2012*

**chemistry**

Hello. Please, help me do this. I would be really thankful! Find the mass of triacetate, which you can get from 1.62 ton of wood waste. The yield of process is 75% and there are 50% of cellulose in wood.
*May 21, 2012*

**science**

Hello. Please, help me do this. I would be really thankful! Find the mass of triacetate, which you can get from 1.62 ton of wood waste. The yield of process is 75% and there are 50% of cellulose in wood.
*May 21, 2012*

**math**

Hello. Please, help me solve this: Parabola y = ax^2 + bx + c passes through the point (2;-6). Find the values of a, b and c, if vertex of parabola is (4;-10).
*May 19, 2012*

**math**

Please, help me solve this. log[2]x * log[2](x/4) = 8
*May 6, 2012*

**math**

Can someone help me do this? I need to find the domain of this equation: x - 3 = 2√11-2x
*May 5, 2012*

**math**

Thank you A LOT!
*May 5, 2012*

**math**

I would really appreciate it, if someone helped me how to do this. │x-4│ - │7-x│ = 1
*May 5, 2012*

**math**

how do you solve this? cosx - cos(2x) =
*May 5, 2012*

**math**

I need to find out the type of triangle (by the type of angles). Is triangle acute, right or obtuse, when the lenghts of triangle sides are: a) 7, 8, 12 b) 20, 15, 40 c) 2/3, 8/9, 10/9
*January 22, 2012*

**math**

It does not. Or I don‘t know what you‘re talking about. Is these right if you can check, I tried to do it on my own. 10/3√3 ; 10√3/√2+√6 . didnt get the last one...
*January 15, 2012*

**math**

One side of triangle is 10 centimetres, two angles next to that side are 30° and 60°. I need to find all three angle bisectors of triangle.
*January 15, 2012*

**art**

Compare Manet’s Olympia to Millais’s Ophelia. Discuss how each work represents the artist and his period
*November 17, 2011*

**science**

you push a 12.5 kg cart with a force of 14 N if the cart starts from rest how far does it move in 3 seconds?
*November 2, 2011*

**science**

Percent Error Formula = [ (Experimental Value - Theoretical Value) / Theoretical Value ] x 100%
*November 2, 2011*

**histroy**

all powers not delegated the united states by the constitution..are reserved to the states respectively or by the people "this language drafted by____and incorporated into the____amendment bill of rights was intended to adress the concerns of the antifederalist.
*September 13, 2011*

**Math**

A car is heading east toward an intersection at the rate of 40 mph. A truck is heading south, away from the same intersection at the rate of 60 mph. At what rate is the distance between the car and the truck changing when the car is 8 miles from the intersection and the truck ...
*July 31, 2011*

**Math**

A car is heading east toward an intersection at the rate of 40 mph. A truck is heading south, away from the same intersection at the rate of 60 mph. At what rate is the distance between the car and the truck changing when the car is 8 miles from the intersection and the truck ...
*July 31, 2011*

**calculus**

A car is heading east toward an intersection at the rate of 40 mph. A truck is heading south, away from the same intersection at the rate of 60 mph. At what rate is the distance between the car and the truck changing when the car is 8 miles from the intersection and the truck ...
*July 31, 2011*

**geometry **

The area of a trieangle is 16 ft. squared. The lenght of one side is 8ft. How long is the base?
*June 20, 2011*

**Algebra 1**

how do find the y and x intercepts for the equation 3x + y = -7 ?
*April 28, 2011*

**math**

ethan had $8 more than dakota. ethan then gave 1/4 od hia money to dakota. the ratio of money ethan had to the money dakota had then became 5:7. howmuch money did ethan give to dakota
*March 19, 2011*

**Math**

Minimize C=7x+3y+4z 0≤x 0≤y 0≤z 100≤2x+3y+3z 120≤5x+2z Answer: Minimum value of C =?
*March 4, 2011*

**Math**

I need to make sure I have the right answer?
*March 2, 2011*

**Math**

Minimize C=7x+3y+4z 0≤x 0≤y 0≤z 100≤2x+3y+3z 120≤5x+2z Answer: Minimum value of C =?
*March 2, 2011*

**writing**

favorite room kitchen
*February 16, 2011*

**algebra**

1.)Twice a number is 28
*January 24, 2011*

**algebra**

1.)Twice a number is 28
*January 24, 2011*

**PSYCHOLOGY**

Summarize the multi-factorial model and how it relates to the diagnosis of illnesses
*November 8, 2010*

**trig**

if tan(2x+18)degrees = cot(4x-12)degrees
*May 9, 2010*

**Algebra**

If 3 is the index, and there is no radicand, and inside of that radical is another radical with ten being the radicand, how could the result be 6 as the index with ten being the radicand? I thought you multiply the outer index with the inner one. In that case you would get 3, ...
*September 13, 2009*

**Algebra**

3 (in the nook) of the radical of 8 raised to the second power according to my book equals 2^2 which equals for. But how and why does this equal 2^2? Can you explain the process please? I don't get how that radical equals four! Thanks for your help!
*September 11, 2009*

**Algebra**

I'm adding 2(radical 50) + 12 (radical 8). I began by breaking the radical fifty into two parts: the radical of 25 and the radical of two. The radical of twenty five can break down into five, and the radical of two stays the way it is. Now it should read 2 5 radical of two...
*September 10, 2009*

**Algebra**

I am trying to figure out how to evaluate 100^-3/2. I'm going by the example (64)^2/3=16. IN the example, 64^2/3 is changed into 64^1/3^2=4^2=16. But I don't get why out of all numbers it is changed into 4^2. I know 16 goes into 64 four times, but why is the answer 16 ...
*September 10, 2009*

**Algebra**

In my history book the expression square root (with a 3 in the nook( around a square root of ten is given. It says it equals the square root of ten with 6 in the nook. However, I don't understand where the six came from. I thought you multiply the two things in the nooks ...
*September 9, 2009*

**World History**

I would write a list of pros and cons for breaking away from the Cathlolic Church. If you see more pros than cons, then yes, I would say his decision was justifiable. However, if there are more cons than pros, I would say it was primarily unjustifiable with the exception of ...
*September 9, 2009*

**Algebra**

How is 6y^2(2y^0)^2 equal to 24y^2 as my book says? I got 144y^5 by raising each number and coefficient to the second power and multiplying 36 by 4. Thanks for your help.
*September 9, 2009*

**Algebra**

I thought that numbers raised to the zero power were always one, but my book says 6x^0 is 6. How come? Thanks!
*September 9, 2009*

**CP Geometry**

Hi. I know there must be a formula for this question, but I just can't figure it out. Q.) Imagine a large multiple choice sheet printed with response spaces like the sample below. Now how many unique responses can be encoded? Explain your reasoning! (A)(B)(C)(D)(E)(F)(G)(H...
*August 25, 2009*

**8th grade**

Perhaps because a sourvenir is a reminder of a past experience, and handcuffs can remind someone of their arrest?
*August 25, 2009*

**Algebra**

22=200X62. Do you divide by x, and then multiply the right side by 22? Or do you divide 22 by 200 and 62 but at different times? I know the order of operations but I don't get how to do this. Please help.
*June 3, 2009*

**chem**

An unknown was prepared with the concentration of 0.000630 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1. The expected ...
*April 20, 2009*

**chem**

An unknown was prepared with the concentration of 0.000630 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1 . The expected ...
*April 19, 2009*

**chemistry**

You have 4.0 g of solid A, 100.00 mL of water (100.0 g of water), and the total mass of solid A combined with 100.00 mL of water is found to be 104.0 g. The mass percent of A in this solution is
*April 13, 2009*

**chem help**

The reaction of methane and oxygen yields carbon dioxide gas and water. The unbalanced reaction is as follows: CH4(g) + O2(g)CO2(g) + H2O(g) A. If 1.26 grams of methane are reacted, how many grams of water vapor are produced? B. If 2.796 grams CO2 are released, how many grams ...
*April 13, 2009*

**chem!**

A solution was prepared by dissolving 0.163 g of sugar, (C12H22O11 MW = 3423gmol) in 100.00 mL water. What is the molarity of this solution?
*April 13, 2009*

**chemistry**

If a block of wood with the length 1.05 m, height 5.24 cm, and width 3.36 cm and a mass of 2.56 kg what is the density?
*April 12, 2009*

**chemistry**

If a cube with edges of 1.000 cm weighs 25.68 g, what would the mass of a cube of the same material with sides 2.72 cm in length be?
*April 12, 2009*

**Chemistry**

Information about the development of Avogadro's number.
*March 28, 2009*

**Calculus**

Use implicit differentiation to find dz/dy for yz = ln (x+z) I am unsure of how to deal with the right side specifically.
*March 11, 2009*

**3rd math**

Write 35 divided by 7 in three different ways. What is the quotient? do they mean 35 divided by 5= 7 , 35 divided by 7= 5 or by sign?
*January 23, 2009*

**3rd math**

Square each of these numbers. There's a square, on top is the number 5 and on the left side 5. Inside the square is a line?
*January 23, 2009*

**Chemistry 2 Ap**

Why is methyl and ethyl groups called hydrocarbons
*September 22, 2008*

**Physics**

An object is thrown vertically and has an upward velocity of 18 m/s when it reaches one fourth of its maximum height above its launch point. What is the initial (launch) speed of the object?
*September 15, 2008*

**Math**

You can only use the numbers 12, 7, 2, and 24?
*September 11, 2008*

**Algebra - Simple, Somewhat**

So... What's an example of undefined correlation?
*September 11, 2008*