# Posts by Pedro

Total # Posts: 71

**Chemistry**

What is the total number of mole of atoms in 1 mole of Al2(CO3)3?

*December 12, 2016*

**Math**

Determine the number of combinations on a bicycle lock that has a 3-digit number combination with only 3 numbers where the numbers can be repeated to open the lock

*September 8, 2016*

**Math**

7.6×10^6 in standard. Form

*August 31, 2016*

**Math**

Sentence for describe a situation that can be modeled with the ratio 8 to 3

*August 26, 2016*

**geometry**

line jk bisects mn at point j find mn if jm = 6 3/4 feet

*June 9, 2016*

**clinical psychology**

whats is a timeline and milestones in clinical psychology subject?

*March 30, 2016*

**math**

Mr.Jacobs budgeted $1,200 for tiles.His sketch of the floor requires him to use 38 white tiles.Each white tile costs $12.Write and solve an inequality to find the maximum amount he can spend on brown tiles.

*March 9, 2016*

**MATH**

4y+6y=21, 7x-3y=3?

*February 9, 2016*

**math**

Describe a situation that can be modeled with the ratio 8 to 3

*November 11, 2015*

**physics**

A bullet is fired straight up from a gun with a muzzle velocity of 217 m/s. Neglecting air resistance, what will be its displacement after 9 s? The acceleration of gravity is 9.8 m/s2 .

*September 22, 2015*

**math**

You are asked to calculate gas mileage for a car, and your answer comes out with units of gal/mi. This means that

*September 20, 2015*

**math**

The exterior surface of a cylinder with a circumference of 2 feet and a length of 5 feet (and no end caps) is the same as the area of

*September 20, 2015*

**math**

A small grill can hold two hamburgers at a time. If it takes 10 minutes to cook one side of a hamburger, and 5 minutes to cook the other side, then what is the shortest time needed to cook both sides of three hamburgers? (HINT: You are allowed to cook one side of a hamburger ...

*September 20, 2015*

**Math**

A B B B

*March 2, 2015*

**accounting**

Halifax Manufacturing allows its customers to return merchandise for any reason up to 90 days after delivery and receive a credit to their accounts. Halifax only makes credit sales. The company began 2013 with an allowance for sales returns of $300,000. During 2013, Halifax ...

*October 29, 2014*

**math**

Can you write3+5+6=14 as a multiplicacion sentence? Explain.

*October 28, 2014*

**Physics**

a kid jumping on a trampoline reaches a height of 0.925m what was his speed when he left the trampoline

*October 27, 2014*

**Language Arts - The Odyssey - Please Check Answers**

How does this excerpt prove that Odysseus causes his crew’s demise? by explaining his haphazard travels by describing his loyalty to Zeus by showing his physical weakness by revealing his ignorant assumptions

*September 26, 2014*

**Probability**

c= 1/128 P(Y<X)= 83/128 P(Y=X)= 1/32 P(X=1)= 10/64 P(X=2)= 17/64 P(X=3)= 0 P(X=4)= 37/64 E[X]= 3 E[XY]= 227/32 VAR(X)= 3/2

*March 7, 2014*

**statistics**

a)diagrams -p1 -(p2)- end -(p3)- end b)-(p1)-(p2)- end -(p3)----- end

*February 17, 2014*

**statistics**

With f the probability of fail a) First branch: f1=(1/3)*(1/3) Second branch: f2=1/3 Thus: The probability of success of the system is:(1-(1/3)*(1/3))*2/3 =2/3*(1-1/9)=(2*8)/(3*9) b) First branch: f1= 1-(2/3)*(2/3)=5/9 second branch f2=1/3 Thus: The probability of success of ...

*February 17, 2014*

**probability**

P(A) = 4/9 P(B) = 0.9375 P(A?B)= 4/9 P(C) = 0 P(D) = 3/4 P (A?D) = 11/36

*February 7, 2014*

**science**

(4*n-6)/(n*(n-1))

*February 6, 2014*

**finance**

865.13

*November 4, 2013*

**MATH**

If there are 1 billion six hundred and forty thousand shares in circulation, and my mate says he owns 0.042% of the shares, how many shares does he hold?

*September 26, 2013*

**CUMIUNITI**

In which year did the relationship between Britain and the colonies begin to change dramatically?

*September 18, 2013*

**math**

john saw 24 animal at a pet store 14 dogs and 3 hamsters. how many more animals should he see?

*December 6, 2012*

**math**

33x650x-43

*October 22, 2012*

**algebra**

Find the vertices and foci of this ellipse 4x^2+16y^2+64x+64y+256=0

*July 10, 2012*

**math**

the area of a square is 49 square inches. find the number of inches in the length of a diaganol. express your answer in simplest radical form.

*March 9, 2012*

**algebra**

Lisa is planning to put a border around the edge of a circular table. She needs to know how long the border needs to be so that she can buy the material. Which measurement does Lisa need?

*January 31, 2012*

**math**

a piece of fabric is cut into 12 equal lengths with 3 inches left over. Define a variable, and write an expression for the length or the original piece.

*September 29, 2011*

**statistics**

N(373,67) means the distribution is a normal distribution with mean = 373 and the variance = 67 (standard deviation = square root of 67).

*September 12, 2011*

**History......Help**

Which of the following best describes the econmic trends of the 1920s?

*March 29, 2011*

**Math**

For the sequence, describe the pattern, write the next term, and write a rule for the nth term. 2/3,4/4,6/5,8/6,...

*March 1, 2011*

**Value of a Charge of a Body (Physics 11th Grade)**

right!!

*February 25, 2011*

**corporate finance**

Can't answer without knowing the 2020 market price.

*February 22, 2011*

**Chemistry**

If mixing baking soda, (NaHCO3) with vinegar (CH3COOH) to generate carbonic acid (H2CO3), which breaks up into water and carbon dioxide gas) and sodium acetate (NaCH3COO), would the equation be: NaHCO3 + CH3COOH yields H2CO3 + NaCH3COO

*February 3, 2011*

**math**

y^2 fifth root of 64x^6 - 6 fifth root of 2x^6y^10

*February 2, 2011*

**Math**

For a model rocket, the altitude h in meters, as a function of time t, in seconds, is given by h=68t-8t^2. after how many seconds will it hit the ground?

*December 11, 2010*

**Almeida**

The two largest diner chains in Kansas compete for weekday breakfast consumers. The two chains, Golden Inn and Village Diner, each offer weekday breakfast customer a â��breakfast clubâ�� membership that entitles customers to a breakfast ...

*December 7, 2010*

**chemistry**

Zinc + Hydrochloric acid --> Znic Chloride + Hydrogen Sodium hydroxide + sulfuric acid --> sodium sulfate +water Sodium + Hydrogen --> sodium hydride 2CH3COOH + Cu --> (CH3COOH)2Cu + H2

*December 5, 2010*

**chemistry**

Predict the products of the chemical reaction aluminum + iron(III) oxide

*December 5, 2010*

**physics**

The gravitational energy decreases. because P.E.= m*g*h

*December 5, 2010*

**Physics**

a= F/m =16/0.5 =32m/s v²=2*32*5 v =17.9 But I get 17.9m/s..... acceleration is equal to net force over mass or just force over mass? Anything wrong with my steps? Can I minus 17.9 by 5N which is the friction?

*December 5, 2010*

**Chemistry**

Write the word equations below as chemical equations and balance. copper + sulfuric acid yield copper(II) sulfate+ water + sulfur dioxide

*December 1, 2010*

**Algebra**

using synthetic subsititution to evaluate the polynomial functuion for the given value of x. h(x)= -8x^3+14x-35; x=4

*November 29, 2010*

**Chemistry**

is it a double replacement?

*November 26, 2010*

**Chemistry**

What kind of reaction is it when the reactants produce carbon dioxide and water

*November 26, 2010*

**Algebra**

At a flea market held each weekend, an artist sells handmade earrings. The table below shows the average number of pairs of earrings sold for several prices. Given the pattern in the table, how much should the artist charge to maximize revenue? Table: price: $15 $14 $13 $12 ...

*November 17, 2010*

**10th grade**

mass: 2.04 molar mass of MgSO4: 24.3+32.1+16*4=120.4 moles= 2.04/120.4 = 0.0169mol

*November 4, 2010*

**physics**

Find the angular speed of the Earth as it spins about its axis. Give your result in rad/ses

*November 2, 2010*

**physics**

express the angular velocity of the second hand on a clock in rev/hr

*November 2, 2010*

**physics**

A 94- astronaut and a 1200- satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.25 directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with the shuttle.What was the ...

*October 31, 2010*

**geometry**

the arc lenght of sector is 5 pie. If the circle has a radius of 18 cm, what is the measure of the central angel of the sector?

*April 21, 2010*

**physics**

An artillery shell is fired at an angle of 67.1◦ above the horizontal ground with an initial speed of 1580 m/s. The acceleration of gravity is 9.8 m/s2 . Find the total time of flight of the shell, neglecting air resistance. Answer in units of min.

*November 19, 2009*

**Algebra**

plane ascends at a 40° angle. When it reaches an altitude of one hundred feet, how much ground distance has it covered? To solve, use the trigonometric chart. Round the answer to the nearest tenth.

*October 9, 2009*

**Computers**

//program that puts two lists in order in one single list with all the numbers in order import java.util.Scanner; public class listOrder { public static void main (String [] args){ int [] list1; int [] list2; int [] list3; int temp; list1 = new int [10]; list2 = new int [10]; ...

*October 1, 2009*

**Computer Science**

//program that puts two lists in order in one single list with all the numbers in order import java.util.Scanner; public class listOrder { public static void main (String [] args){ int [] list1; int [] list2; int [] list3; int temp; list1 = new int [10]; list2 = new int [10]; ...

*October 1, 2009*

**English**

need a spesch

*July 3, 2009*

**Please help!!!!Accounting**

. Leng Xiong is unable to reconcile the bank balance at January 31. Leng’s reconciliation is shown here. Cash balance per bank $3,660.20 Add: NSF check 370.00 Less: Bank service charge 25.00 Adjusted balance per bank $4,005.20 Cash balance per books $3,975.20 Less: ...

*September 29, 2007*

**chemistry**

use the properties of sodium cyanide described above to deduce the type of bonding that holds this compound together, explaining in 1 or 2 short sentences how you arrived at your conclusions. Write a balanced chemical equation for the reaction that occurs when sodium cyanide ...

*March 7, 2007*

**chemistry**

state noble gas whose electron configuration is attained in a lewis structure for hydrogen cyanide and noble gas attained in lewis structure for cyanogen? I have answered this several times but at times it really wasn't an answer. I am not familiar with discussing ...

*March 7, 2007*

**chemistry**

a drop of oil (volume 0.05cm3) is released from a medicine dropper on to the calm surface of a pond where it spreads out to cover an area of 40cm2. Assume that the oil film has a uniform thickness equal to the diameter of an oil molecule. CALCULATE the diameter of an oil ...

*March 7, 2007*

**s103**

Reaction 1 O ll CH2=CH-CH-OH + CH3-CH-CH2-C l l l CH3 CH3 OH compound 1 compound 2 Products? identify any functional groups in compounds 1&2, circle them and name them clearly? complete the equation for reation 1 by drawing the abbreviated structural formula, of the products, ...

*March 7, 2007*

**s103**

Reactants O ll CH2 = CH - CH - OH + CH3 - CH - CH2 - C l l l CH3 CH3 OH compound 1 compound 2 Products? identify any functional groups in compounds 1&2, circle them and name them clearly? complete the equation for reation 1 by drawing the abbreviated structural formula, of ...

*March 7, 2007*

**s103**

the isotope caesium -137, which has a half life of 30 years, is a product of nuclear power plants. How long will it take for the amount of this isotope in a sample of caesium to decay to one sixteenth of its original amount? - explain answer 1/16 = 1/2^x 2^x = 16 Solve for x.

*March 7, 2007*

**S103**

Which element results if 2 protons and 2 neutrons are ejected from a radium nucleus with atomic number 88 and mass number 226 - show workings? What is actually ejected is an alpha particle (helium nucleus). The new atomic number is 88-2 = 86 and the new atomic weight is 226 - ...

*March 7, 2007*

**poetry**

can you reccommend 4 humourous poems by different poets http://pages.ripco.net/~mws/Poetry/24.html by Thomas Hardy http://www.silentwords.com/Humorous.html http://dir.yahoo.com/Arts/Humanities/Literature/Poetry/Poetic_Forms/Closed_Forms/Limericks/ http://falcon.jmu.edu/~...

*January 13, 2007*

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