Friday
October 28, 2016

# Posts by Juan

Total # Posts: 263

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

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

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

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
May 3, 2012

math
All you stupid people the awnser 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

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

Math
October 9, 2011

Math
5 years,21days,4hours,32min,17sec - 2 years,93days,7hours,47min,24sec -------------------------------------
October 9, 2011

thank you very much for your help
October 9, 2011

I don't get it. Please could you help me??????????
October 9, 2011

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

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

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

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

how can you show without multiplying that 4/9 is greater then 0.4
January 20, 2011

Chemistry
912 mm Hg to standard atmosphere
January 19, 2011

Goemetry
(2x+50) (8x+8) solve angle degree
December 20, 2010

chemestry
given 43 moles of KCl how much HNO3 is needed to complet the reaction
December 8, 2010

chemistry
Explain jhow you would make 400 milliliters of an 18% solution from dry glucose and distilled water.
December 7, 2010

Earth Science
rank the layer from the coldest to the hottest
December 2, 2010

Peggy is runnig around the school track at a constant speed. The track has two straight stretches on the sides and two curved stretches at either end. Where on the track does Peggy experience balanced and unbalanced forces? Explain your answer.
November 11, 2010

Science
Peggy is runnig around the school track at a constant speed. The track has two straight stretches on the sides and two curved stretches at either end. Where on the track does Peggy experience balanced and unbalanced forces? Explain your answer.
November 11, 2010

Peggy is runnig around the school track at a constant speed. The track has two straight stretches on the sides and two curved stretches at either end. Where on the track does Peggy experience balanced and unbalanced forces? Explain your answer.
November 11, 2010

two children are fighting over a toy pull on it from opposite sides .the result is stand off.explain this term of the net force
November 7, 2010

physics
Hi Chris
November 2, 2010

physics
a body is thrown downward with an initial speed of 20.0 m/s on earth. what is the acceleration of the object
November 2, 2010

math
How do you find the rule of the sequence if the 2nd term is 40057.07 and the 5th term is 19192.53
October 25, 2010

MAth
Make a tally chart for the numbers of students in the third-,fourth-,and fifth-grade classes:26,25,27,27,26,28,27.
October 12, 2010

What are the elements of a contract under common law? Explain what gaps in a contract can be filled by Article 2 of the UCC? What is the difference between a shipment and a destination contract in Article 2 of the UCC? Jason shipped a truckload of peaches from his orchard to ...
September 27, 2010

What are the elements of a contract under common law? Explain what gaps in a contract can be filled by Article 2 of the UCC? What is the difference between a shipment and a destination contract in Article 2 of the UCC? Jason shipped a truckload of peaches from his orchard to ...
September 27, 2010

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