# Posts by Juan

Total # Posts: 280

**physics**

the above solution is correct except for the very last part. They did not take into account that it should have been: t^2=(2h/a) sqrt(t^2)=sqrt(2.06) t=1.44

*October 4, 2013*

**history**

i need to write this as a essay can you help me split up the ideas into paragraph and the opening and conclusion

*September 21, 2013*

**history**

Im living for 15 years in perfect background and with a good education and so are all the kids that live around me. Another reason my parents aren't college graduates and they've found jobs to make an affordable living with everything needed for themselves,for me,and ...

*September 21, 2013*

**history**

im living for 15 years in pefect background with a good education and so are all the kids that liv around me also that my parents arent college graduates and theyve found jobs to make a affordable living with everything needed and to plan vacations and their son is going to ...

*September 21, 2013*

**history**

yes i am but i cant think of any resaons can you give me hints

*September 21, 2013*

**history**

why im optimistic about our nations future can you help me i need to write a essay about this paragraph

*September 21, 2013*

**english**

your always here so on your time

*September 18, 2013*

**english**

off curiosity ms sue why do you do this

*September 18, 2013*

**question**

im a freshmen and i wan to become a architect what courses should i take in highschool and is it beter to take statistics or precalculas

*September 17, 2013*

**chemistry**

what is the density of unknown material with a mass of 17.44g if the dimensions are length 2.2cm, height 1.7cm, and width 4.1cm

*September 17, 2013*

**math**

There is something wrong with this definition for a pair of vertical angles: “If AB and CD intersect at point P, then APC and BPD are a pair of vertical angles.” Sketch a counterexample to show why it is not correct. Can you add a phrase to correct it?

*September 15, 2013*

**geometry**

There is something wrong with this definition for a pair of vertical angles: “If AB and CD intersect at point P, then APC and BPD are a pair of vertical angles.” Sketch a counterexample to show why it is not correct. Can you add a phrase to correct it?

*September 15, 2013*

**math**

0.316 in expanded form

*August 6, 2013*

**chem 223**

What additional volume of 10.0 M HCl would be needed to exhaust the remaining capacity of the buffer after the reaction described in Part B?

*July 22, 2013*

**math**

Answer: B) 7 minutes, 30 seconds per mile. It takes the slower runner 30/28 minutes longer than the faster runner to complete the race, or 1.071 times longer. Because the faster runner is going at 7 minutes per mile, the second runner is going at 7.5 minutes per mile (1.071 * ...

*May 28, 2013*

**kimball**

How many kilojoules of heat must be transferred to a 480-g aluminum pizza pan to raise its temperature from 22 degrees celsius to 234 degrees celsius?

*May 28, 2013*

**Chemistry**

we burn 12.50L of ammonia in 20.00L of oxygen at 500 degrees celsius. What volume of nitric oxide, NO, gas can form? what volume of steam, H2O (g) is formed? Assume that all gases are at the same temperature and pressure, and that the limiting reactant is used up 4NH3(g) + 5O2...

*May 6, 2013*

**Chemitry**

calculate the volume of 1.07M phosphoric acid solution necessary to react with 22.9 ml of 0.150M Mg(OH) 2H3PO4 +3Mg(OH)2 ==> Mg(PO4)2 + 6H20

*May 1, 2013*

**Chemistry**

calculate the volume of 1.07M phosphoric acid solution necessary to react with 22.9 ml of 0.150M Mg(OH)

*May 1, 2013*

**math help please ASAP**

5,-15,45,-135 is it arithmetic , geometric or neither ?

*April 25, 2013*

**Chemistry**

what happens to a battery when it is "recharged"

*April 21, 2013*

**Chemistry**

4, Assign oxidation states for the two elements in the compound OF2. Explain the rules that you use. 5. For each of the following oxidation-reduction reactions of metals and nonmetals, identify the element that is oxidized and the element that is being reduced. a) 4Fe(s) + ...

*April 21, 2013*

**Chemistry**

Assign oxidation states to all atoms in each of the following. explain the order in which you determine the oxidation states for each element if applicable. a)O2 b)HSO4- c)Na2HPO4 d)CrCl3

*April 21, 2013*

**math**

a bag of marbles contains 5 green 4 red and 6 yellow what is la probability of drawing 2 yellow with replacement.

*April 1, 2013*

**Chemistry**

• Describe the properties of acids and bases and explain the concept of pH • How will you measure the pH of the soil in your garden • How will pH affect materials and equipment you might use in gardening. • 3 vegetables and 3 flowers that would work well ...

*March 24, 2013*

**College math**

I like turtles alot because they are awesome, are you chinese chinese people are awesome.

*March 23, 2013*

**Chemistry**

At the equivalence point in a titration you know the volume (x mL) of a standard solution of acid (2.5 M) that has been added to a known volume base (y mL). show how you can determine the concentration of the base.? Explain

*March 15, 2013*

**history**

Which of the following labor activists founded the American Federation of Labor? A. Samuel Gompers B. William Sylvis C. Uriah Stephens D. Terence Powderly

*March 11, 2013*

**Chemistry**

How much salt could an average person hold? (Ignore safety concerns) Given equation: 0.3x=y 0.3x meaning mass of water y mean mass of salt that could be dissolved in the given mass of water Assuming the average human body has 60-75% of water, let us just use 75% Solve.

*March 11, 2013*

**Chemistry**

Give a real life scenario in which solubility is important that does NOT involve salt and water.

*March 11, 2013*

**Chemistry**

Which of the following represent conjugate acid-base pairs? For those pairs that are not conjugates, write the correct conjugate acid or base for each species in the pair. a. HS-4-,SO4^2- B. HBr, BrO- c. H2PO4-, PO4^3- d. HNO3, NO2-

*March 10, 2013*

**Chemistry**

use the bronsted-lowry model to label the acid-base pairs in the following equation for the ionization of water: H20(L) + H20(L) <--> H30+(AQ) + OH-(AQ). EXAPLAIN

*March 10, 2013*

**Math**

The base of the skateboard ramp has an area of 2.3 m square meters the height of the ramp is 1.2 m find the volume of the rectangular prism

*March 5, 2013*

**Math**

You have to use 3,500 calories to lose one pound. If you play Dance Dance Revolution you can burn 1,000 calories in an hour. How many hours would you have to play in order to lose one pound? Answer is 35 3500 divided by 1,000=35 please help Ms. Sue i think this is right if not...

*March 4, 2013*

**Chemistry**

What is 431804 and 10235.0 rounded to four significant figures?

*March 3, 2013*

**physics**

4.5s

*February 21, 2013*

**Math**

It is 72

*February 15, 2013*

**Statistics**

Find the probability that for a random sample of 4 states the sample mean x is between 475 and 525

*February 12, 2013*

**algebra**

A pharmacist has 40% and 60% iodine solutions on hand. How many liters of each iodine solution will be required to produce 4 liters of a 50% iodine. 1. iodine1 = 2, iodine2=2 2. iodine1 = 21, iodine2 = 21 3. iodine1 = 41, iodine2 = 41 4. iodine1 = 41, iodine2 = 21

*January 21, 2013*

**algebra**

A pharmacist has 40% and 60% iodine solutions on hand. How many liters of each iodine solution will be required to produce 4 liters of a 50% iodine.

*January 21, 2013*

**algebra**

graph the following linear equations and determine the correct classification: L1:y=-x+5 and L2:y=-2x+1

*January 21, 2013*

**algebra**

The difference between two numbers is 18. If the sum of three times the smaller number and half the larger number is 2, find the smaller number.

*January 21, 2013*

**physical science**

Under a pressure of 200 kPa, a confined gas has a volume of 2,500 cubic meters. The pressure acting on the gas is increased to 500 kPa. What is the new volume of the gas if the temperature remains the same?

*January 7, 2013*

**Physics**

-16cm/s^2

*November 25, 2012*

**science**

How much volume would a 4x4x4 cm cube occupy

*October 25, 2012*

**Math**

Max creates a lavender dye by mixing 3 parts of red dye. Will a mixture of 14 parts of blue dye with 23 parts of red dye create the same shade of lavender?

*October 25, 2012*

**english2**

Bee balm, coneflowers, and black-eyed Susans, brightly colored flowers with darker bulbous centers, contrast beautifully when planted together. is it correct

*October 22, 2012*

**physiscs**

A model rocket is launched straight upward with an initial speed of 53.0 m/s. It acceler- ates with a constant upward acceleration of 3.21 m/s2 until its engines stop at an altitude of 230 m. What is the maximum height reached by the rocket? The acceleration of gravity is 9.81...

*September 29, 2012*

**math**

rewrite the division as multiplication h/1/k

*September 17, 2012*

**hEALTH**

lol Ms. Sue didn't reply so Aya freaked out

*August 1, 2012*

**health**

lol^

*August 1, 2012*

**Maths Investments**

A woman has a total of $9,000 to invest. She invests part of the money in an account that pays 8% per year and the rest in an account that pays 11% per year. If the interest earned in the first year is $840, how much did she invest in each account?

*June 26, 2012*

**Algebra 2**

A data set has the following point: (1,8)(2,7)(3,5) The slope of the linear regression line is -1.5 Find the y-intercept of the linear regression.

*May 22, 2012*

**math**

you need 5 foot long board into pieces that are 3/4 of a foot long. How many pieces can we cut? what length of the board will be left?

*May 17, 2012*

**physics**

What is the angular momentum of a 0.200- ball rotating on the end of a thin string in a circle of radius 1.45 at an angular speed of 13.0 ?

*May 6, 2012*

**Maths**

STOP CHEATING EMAD!!!

*May 3, 2012*

**College Chemistry**

12

*March 26, 2012*

**math**

All you stupid people the answer is 36.

*February 28, 2012*

**Scottsdale c c**

A baseball has a velocity of 44.0 m/s, directed horizontally, as it is released by a pitcher. The ball’s velocity 0.0100 s before it is released is 42.0 m/s, directed 3.00 degrees above the horizontal. Estimate the ball’s instantaneous acceleration just before it is ...

*February 27, 2012*

**scottsdale CC**

At 0.100 s intervals, the x coordinates of a particle are 0, 1.01 cm, 2.05 cm, and 3.12 cm. Estimate the instantaneous velocity and acceleration at t = 0.

*February 21, 2012*

**scottsdale CC**

Let s ct 3 , where c 1.0 m/s 3 . Compute the average speed over the time intervals t1 1.0 10 1 s, t2 1.0 10 2 s, and t3 1.0 10 3 s, with all time intervals starting at the time t 1.0000 s. What is the instantaneous speed at t 1.0000 s

*February 20, 2012*

**scottsdale CC**

During a 5.00 s interval, a particle’s coordinates change from x =10.0 m, y =5.00 m to x =30.0 m, y = 5.00 m. Assuming the particle’s velocity is constant, what will its coordinates be at the end of the next 5.00 s interval?

*February 20, 2012*

**scottsdale CC**

During a 5.00 s interval, a particle’s coordinates change from x =10.0 m, y =5.00 m to x =30.0 m, y = 5.00 m. Assuming the particle’s velocity is constant, what will its coordinates be at the end of the next 5.00 s interval?

*February 20, 2012*

**scottsdale CC**

A car travels around a curve at a constant speed of 80.0 km/h. What is the car’s instantaneous velocity at an instant when it is headed west

*February 20, 2012*

**geometry**

Pendejo

*February 7, 2012*

**math**

Jackson is creating a water garden surrounded by a triangular patch of grass. If the pond will take up the space indicated by the circle, how many square feet of sod will he need to complete the garden (use 3.14 for and round your answer up to the next foot)?

*February 7, 2012*

**mechanics**

An object (point mass) is projected up an inclined plane from the bottom with an initial speed of 5.0 m/s. The plane is 0.75 m high and the coefficient of kinetic friction between the object and the plane is 0.25. For what angle of inclination would the mass just come to rest ...

*February 6, 2012*

**physical science**

C. 100kg, 166N Mass remains constant but weight would be changed because of the gravity. The equation for force is F=ma F=100*1.66 F=166N

*December 2, 2011*

**arrays an expanded algorithm**

I need an example to help my son like 23x17

*December 1, 2011*

**chemistry**

What volume of H2 (g) (at 750. mm Hg and 25 C) is produced from 50.0 mL of 0.214 M H2SO4 and 0.300 g of Al?

*November 29, 2011*

**chemistry**

12

*November 26, 2011*

**Math**

I don't get your answer and I need the answer for tomorrow. pleaseeeeeeeee

*October 9, 2011*

**Math**

5 years,21days,4hours,32min,17sec - 2 years,93days,7hours,47min,24sec -------------------------------------

*October 9, 2011*

**Math please help me**

thank you very much for your help

*October 9, 2011*

**Math please help me**

I don't get it. Please could you help me??????????

*October 9, 2011*

**Math please help me**

5 years,21days,4hours,32min,17sec - 2 years,93days,7hours,47min,24sec _______________________________________

*October 9, 2011*

**Physics**

A student places her 442 g physics book on a frictionless table. She pushes the book against a spring, compressing the spring by 4.44 cm, then releases the book. What is the book's speed as it slides away? The spring constant is 1102 N/m.

*September 29, 2011*

**geometry**

gay

*September 26, 2011*

**physics**

0.012m/s2

*September 25, 2011*

**Algebra2**

Can someone EXPLAIN to me how to solve for x. Please don't just give me an answer because I won't learn anything from that. sq root of (x+6) = x

*August 14, 2011*

**math**

Show that f(-x) = -f(x)

*July 4, 2011*

**math**

does the function f(q)=(q(1-q))^1/2 satisfy the hypothesis of the mean value theorem at the interval [-1,5]

*June 17, 2011*

**maths**

10 to the -5 power in expanded form

*June 12, 2011*

**Math**

What are the steps to getting the tan of 345degree, without the use of a calculator?

*June 3, 2011*

**MGT 330**

According to Fiedler, the extent to which the work of subordinates is clear so that they know what to do and how to do it is known as

*May 1, 2011*

**MGT 330**

According to a recent research study, approximately what percentage of organizations which use "self-managed work teams" base the pay of work team members, at least in part, on the team's performance level

*May 1, 2011*

**MGT 330**

A worker in an automobile assembly line who chooses this type of work because of the job security it entails is said to be

*May 1, 2011*

**math**

If a pro basketball player has a vertical leap of about 35 inches, what is his hang time? Use the hang-time function V = 48T²

*April 24, 2011*

**math**

My first math question was written incorrectly. Find the vertex, the line of symmetry, and the maximum or minimum value of f(x). Graph the function. F(x) = 1/5 (x + 9)² +3

*April 24, 2011*

**math**

Find the vertex, the line of symmetry, and the maximum or minimum value of f(x). Graph the function. F(x) = 1/8 (x + 9)² +3

*April 24, 2011*

**Equivalent art**

What is the the 3 equivalent fractions of 10/24

*March 30, 2011*

**Advanced Algebra**

Sam and David are among 5 students who have a chance to win a free airline ticket to San Diego. 2 students from the group will be selected at random to win a ticket. What is the possibility that the 2 students selected will be Sam and David?

*March 28, 2011*

**chemistry**

A reaction mixture is in a 5.4 L flask at 25 oC initially contains only 7.64 grams of acetic acid. (CH3COOH). Set up your I.C.E. table and use it to answer the following questions. HINT: You will need to look up the Ka for this equilibrium reaction. CH3COOH(aq) ¡ê ...

*March 1, 2011*

**math**

It is $385

*February 24, 2011*

**Advanced Algebra**

Can you please explain to me how I can solve these problems? (3^ square root of3) ^square root of 3 (x^ square root of 2) ^square root of 7 5^(2)(square root of 3) • 5^(4)(square root of 3) x^(3)(pi) / x^(pi)

*January 30, 2011*

**math**

Find the x-intercept 3x-5y=14y+9x I think y=0 but 3x=9x does not make sense to me. Please help me. Thank you.

*January 26, 2011*

**4th grade**

how can you show without multiplying that 4/9 is greater then 0.4

*January 20, 2011*