Sunday
April 20, 2014

Posts by Alex


Total # Posts: 2,499

algebra
So is the answer 6sqrt(5)?? Thank you

algebra
sqrt(45)+ sqrt(20)+ sqrt(5)-sqrt(125)=?? I came up with 6sqrt5 I know it's wrong. I think I messed up the breakdown of the sqrt of 125

math
correction ab+b=3a-d

math
But the answer is 120. I have the answers to those questions. I just need to know topics they are included in so I can study.

math
What type of math is this? 25% of what is 30? and solve for a: ab=b=3a-d

Calculus
Find the dimensions of teh rectangle with the most area that will fit above the x-axis and below the graph of y=e^-x^2. Please show with every step. Thanks.

Calculus
You are given a 60 inch by 30 inch piece of cardboad and asked to make a six-sided box. If the cardboard is cut along the lines shown, what will the dimensions of the box with maximum volume? The diagram looks as follows: it is a rectangle with a shaded square in the top left ...

Calculus
Can you show me the steps you skipped? Thanks

Calculus
Find the dimensions of teh rectangle with the most area that will fit above the x-axis and below the graph of y=e^-x^2.

Calculus
it is a rectangle with a shaded square in the top left and bottom left corners.....there is a shaded rectangle in the top right corner and bottom right corner....there is a shaded square to the left of the rectangle in the top right corner and the bottom right corner....in bet...

Calculus
You are given a 60 inch by 30 inch piece of cardboad and asked to make a six-sided box. If the cardboard is cut along the lines shown, what will the dimensions of the box with maximum volume?

Biography
What was Louis Armstrong's goals?

organic chemistry
Because acyl group is a ring-deactivating and decreases the electron density.

Adult education- child care development
Sure.Why not? Why wouldn't it be appropriate?

Physics
On a recent trip to a water park, you notice there is a new slide that you ride down a steep hill, then it carries you back up another ramp and shoots you into a pool. All the kids around you are saying that you leave the ramp at 50 m/s. If the initial height of the slide is 1...

math
how can i fine the volume of 17cm 13cm 10cm

algebra
simplify: sq rt of 15/5 * sq rt of 20

AP Physics
A cowboy at a dude ranch fills a horse trough that is 1.7 m long, 50 cm wide, and 40 cm deep. He uses a 1.9 cm diameter hose from which water emerges at 1.3 m/s. How long does it take him to fill the trough? min

science
2H2(g) + O2(g) = 2H2O (l) Calculate the volume of Hydrogen gas at STP required to produce an amount of energy equivalent to that produced by the combustion of a gallon of octane. The density of octane is 2.66 kg/gal, and its standard enthalpy of formation is -249.9 kJ/mol. HEL...

math 3rd grade
Multiples of 10 can also be multiples of 5 because 5 can "go into" 10 easily, so is the same for other multiples.

2nd grade
So, which words are showing possession? Valentine's and Charlotte's, right?See, it is Valentine's Day,(The day BELONGS to Valentine, and it is Charlotte's Web, and the web belongs to Charlotte.) Understand?:)

Gr. 9 Math (continued)
O_O

US History
did you get rid of the spaces? I only put them because the website wouldnt let me put it on. It's a picture of a girl clinging to a gate nd she looks sad

US History
I need to do a poster thats for teen suffrage and I wanted to use this: h t t p : / / c d n . w n . c o m / p h / i m g / 3 0 / c a / e f 1 c 4 8 d 1 3 2 f d 1 c 1 6 0 5 b b 9 3 d 2 5 2 7 8 - g r a n d e . j p g or something like this. Would this be a good poster? I also need ...

OCHem
The amount of methylcycloheane with the substituent in the equatorial orientation at room temperature (25C) would be The Gibbs free energy for axial methyl to equatorial methyl is -7.28Kj/mol (the universal gas constant is 8.314 j/deg-mol). I cant remember how to solve this!!!...

computer science
If all the hub and authority scores are initialized to 1, what is the hub/authority score of a node after one iteration? In the preceding discussion we encountered two recommended “hard constants” – the increment on te being ten times the last fetch time, and th...

chem
AgNO3 + NaCl produces AgCl + NaNo3 how much AgCl is produced when 3.10g of AgNO3 and .600g of NaCl react?

physics
5. A truck is travelling at a constant velocity of 16.7 m/s. A pumpkin is shot vertically (at a 90o angle to the ground)at a velocity of 120. m/s from the bed of a this pickup truck. The bed of the pickup truck is one meter high (from the ground). Complete the following quest...

5th grade
how much would a trapizoid worth if the triangle eqauls 1/3

Physics
I get it now......Thanks alot.....

Physics
no....sorry I forgot to mention, the angle is 20 degree.....

Physics
I don't know.....it's written like that in the book...... It's being pushed up....... the answer is 12.9m/s.....But I dun know how to calculate it......

Physics
A block of mass 0.5 kg rests on a smooth inclined plane. It is then pushed by a horizontal force of 16N. When the block has displaced 5m along the inclined plane. What would be the speed of the block if the plane is rough and a friction of 5N is acting on the block?

5th grade math
explain how a decimal is related to a percent.

6th grade
i got the general pattern x*5/6 but there is a second part "If a movie ticket costs 7.50, what is jame's weekly allowanse?"

6th grade
if james spends 5/6 of his weekly allowance seeing a movie he has how much of his allowance left

Geometry Please Help
3x I think i could be wrong

Fractions
My denominator is 6 more than my numerator. My simplest form is 2/5 What fraction am I?_______

math-rates
1,680 kilobytes in 4 minutes ..........how do u get it....... lesson 6-2 ......rates....6th grade pg. 289 ......#2

math-rates
.....rates....6th garde.....lesson6-2 5pounds for $2.49

business law
Case study- Lola Langston decides to make it rich by forming a general partnership with her friend Irvine and opening up go-go dancing bars with females and males dancing on a stage in “skimpy” clothing. The first bar is in the town of Bugtussle and the second in the...

Physics
What would the gauge pressure be on a diver in atmospheres if she could dive to a depth of one km in sea water? One atmosphere is 1.01 X 10^5 N/m2. The density of sea water is 1.03 X 10^3 kg/m3.

Physics
A 100.0 meter long transmission cable is suspended between two towers. If the mass density is 2.00 kg/m and the tension in the cable is , what is the speed in m/s of waves on the cable?

college
If 0.0900 g of a metal, M, reacts with excess hydrochloric acid to form 5.00*10(exp.)-3 moles of hydrogen gas and a solution of MCl(subscript)3. Calculate the molar mass of metal, M and identify it. The unbalanced equation is: M(s)+ HCl(aq) =>MCl(sub.)3 + H(sub)2.

world history
Today i got asked to write 3 fact bullets about the 7 aspects of civilization With details from the fertile crescent dose that mean 7 bullets or no?

physics
a flight attendant pulls her 75 N flight bag a distance of 325 m along a level airport floor at a constant velocity. the force she exerts is 39 N at an angle of 57 degrees above the horizontal. calculate the coefficient of kinetic friction between the flight bag and the floor.

Physics
a sled mass 50 kg is pulled along snow-covered, flat group. the static friction coefficent is 0.30, and the sliding friction coefficient is .10. what force is need to get the sled moving? then, what force is needed to keep the sled moving at a constant velocity?

Chemistry
12.5 g of KCl (MM = 74.55 g/mol) is dissolved in enough water to make 675 mL of solution. Calculate the molarity of the KCl solution.

US History
Mi dispiace, I couldn’t stay High taxes were in my way And I had insufficient funds to pay So I came to the land of America Our homeland could no longer be tilled And it was to overfilled And even though I could be killed I come to the land of America So like a bird~ of p...

US History
thank you :] I need to make it at least 3 minutes but I'm kind of stuck. I know that: They worked with textiles, mills, and Cotton gins and stuff They had to Leave school They rarely accepting charity They skimped food They got part time jobs like selling fruit They had li...

US History
I'm doing a song about Italian Immigration from the 1800's for a project nd I'm kind of stuck. Can someone help me out? What I have is this: Hey fratello, wish me luck Hey sorella, I’m awestruck Hey there Nonno, I’m earning bucks In the land of bountiful ...

chesmistry
about how many skittlesium nuclei would remain after three half lives if the intial sample had 500 skittles?

Physics
A toddler is on a playground swing. When she is all the way on the right, then ... her tangential acceleration is maximal to the right. her kinetic energy is maximal. her tangential acceleration is maximal to the left. her tangential acceleration is zero. her velocity is maxim...

Reimbursement Methodologies
Jessica, I am aslo doing my exam but I am really having problems with number 4 in part B exam # 40976200 was wondering if you can help. Thanks

Physics
Why does tension in a rope increase as the rotational speed of a ball increases?

US History
I'm doing a song about Italian Immigration from the 1800's for a project nd I'm kind of stuck. Can someone help me out? What I have is this: Hey fratello, wish me luck Hey sorella, I’m awestruck Hey there Nonno, I’m earning bucks In the land of bountiful ...

Mathematics
the probability of the home team's winning a basketball game is 80% describe a simulation of the probability the home team will win three homes games in a row

math
There's a circle with that has a dot in the middle with two line going to the left and right that's is 16 m. I have to find the area of the circle. I have to give that exact area and an approximate area to the nearest square unit. Help?

math
Is the exact area of a circle with an 16 m radius 32 m squared? And what would be the approximate area be?

Math
I need an algrbra expression

Science
When served at 200 km/h (124 mph), what is the equivalent weight exerted on the tennis ball?

physics
In the figure below, two point particles are fixed on an x axis separated by a distance d. Particle A has mass mA and particle B has mass 4.00mA. A third particle C, of mass 96.0mA, is to be placed on the x axis and near particles A and B. In terms of distance d, at what x coo...

math
rachel is ranked 72 out of 451 students. whats her class rank percentile?

Math- Precalc
could someone please help me solve this problem... e^x - 12e^(-x) - 1

Chemistry
What is a enantiomer?

Chemistry!
Hey jiskha. Microwave ovens emit microwave radiation that is absorbed by water. The absorbed radiation is converted to heat that is transferred to other components of the food. Suppose that the microwave radiation has a wavelength of 12.7 cm. How many photons are required to h...

More chemistry
Hey jiskha. Microwave ovens emit microwave radiation that is absorbed by water. The absorbed radiation is converted to heat that is transferred to other components of the food. Suppose that the microwave radiation has a wavelength of 12.7 cm. How many photons are required to h...

AP chemistry
For the following electronic transitions in the hydrogen atom, calculate the energy, frequency, and wavelength of the associated radiation. From n = 3 to n = 6. From n = 9 to n = 3. From n = 7 to n = 4.

Physics
If it goes under standard level. Exe; sea level is 0 feet. Anything under the sea is x feet below 0.

algebra
two nombers have a sum of 15. one of the numbers is x. Find an expression for the other number

chem
AgNO3 + NaCl produces AgCl + NaNo3 how much AgCl is produced when 3.10g of AgNO3 and .600g of NaCl react?

Calculus
a police helicopter is flying at 200 km/hr at a constant altitude of 1 km above a straight road. The pilot uses radar to determine that an oncoming car is at a distance of exactly 2 km from the helicopter, and that this distance is decreasing at 250 km/hr. Find the speed of th...

Calculus
Solve & plot a graph for the following: F(X)=cos(X)-cos to second power X for the interval negative pi greater than or equal to X less than or equal to positive pi

Calc
Let F be the function defined by F(X)=12X to the 2/3 power minus 4X Find the intervals of which F is increasing? Find X & Y coordinates of all relative max. pts? Find X and Y Coordinates of all relative min pts? Find the intervals of which F is concave down? Sketch a graph of F

12th grade
Solve & plot a graph for the following: F(X)=cos(X)-cos to second power X for the interval negative pi greater than or equal to X less than or equal to positive pi

chemistry
Is the ritalin molecule a polymer?

math
The distance from B to D is approximately (x+10) feet, and the distance from A to C is approcimately (2x-5.3) feet. what is the approximate distance from A to C?

math
MNPQ is a rhombus. The measure of angle MRQ is (13t-1) degrees, and the measure of angle PQR is (7t+4) degrees. what is the measure of angle PQM?

math
The scissor lift forms rhombus PQRS with PQ= (7b-5) meters and QR= (2b-0.5) meters. IF S is the midpoint of Line RT, what is the length of line RT

math
A square graphed on the coordinate plane has a diagonal with endpoints E (2,3) and F (0,-3) what are the coordinates of the endpoints of the other diagonal?

Geometry
A square graphed on the coordinate plane has a diagonal with endpoints E (2,3) and F (0,-3) what are the coordinates of the endpoints of the other diagonal?

Geomtry
The scissor lift forms rhombus PQRS with PQ= (7b-5) meters and QR= (2b-0.5) meters. IF S is the midpoint of Line RT, what is the length of line RT

Geometry
MNPQ is a rhombus. The measure of angle MRQ is (13t-1) degrees, and the measure of angle PQR is (7t+4) degrees. what is the measure of angle PQM?

Geometry
The distance from B to D is approximately (x+10) feet, and the distance from A to C is approcimately (2x-5.3) feet. what is the approximate distance from A to C?

math
The distance between goalpost, BC, is three times the distance from the top of the goalpost to the bottom. If the perimeter of ABCD is 21 1/3 yards, what is the length of BC

math
correct

math
seven rolls each tray with 56 rolls =8

US History
Roosevelt created the new deal if that helps

science
rain forest

math
add 9 + 3 =12 there are 24 hours in a day so 24 - 12 =12 answer 12

grammar
is southern a noun

grammar
beaches right

grammar
section,United states,natual,beauty,coastal,cities,citizens,state,pride,charm,state

grammar
What are the nouns in this sentence? 1. Every section of the United States has scenes of natual beauty. 2. Southern coastal cities are proud of their sandy beaches. 3. The citizens of every state take pride in ther charm of their won state.

Math
ý22xn is between 80 and 85 what is n?

econ312
No, his plan will banrupt the country and it will allow the government to run healthcare. They will decide who gets what and when they get it. The United States is not a socialist country. If you ask many Canadians about their health care plan they would tell you that they do ...

chemistry
if A(aq) + B(aq) = AB(aq), and the molarity of A in the solution is 0.60 M and the molarity of B in solution is 0.60M, calculate the enthalpy of the reaction, delta Hrxn, for the formation of 1 mole of AB solution.

chemistry
if A(aq) + B(aq) = AB(aq), and the molarity of A in the solution is 0.60 M and the molarity of B in solution is 0.60M, calculate the enthalpy of the reaction, delta Hrxn, for the formation of 1 mole of AB solution.

calculus
find the sum ∑(n/(n+1)!) from n=1 to infinity

physics
A car travels 12 km due north and then 26.2 in a direction 0/( that is supposed to be a circle with a line through it)67.3 west of north. Find the magnitude of the cars resultant displacement

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