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Posts by Pedro

Total # Posts: 71

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

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

Math
7.6×10^6 in standard. Form

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

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

clinical psychology
whats is a timeline and milestones in clinical psychology subject?

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.

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

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

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 .

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

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

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 ...

Math
A B B B

Physics
9

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 ...

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

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

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

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

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

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 ...

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

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

finance
865.13

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?

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

science
noc

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

math
33x650x-43

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

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.

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?

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.

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

History......Help
Which of the following best describes the econmic trends of the 1920s?

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,...

Value of a Charge of a Body (Physics 11th Grade)
right!!

corporate finance
Can't answer without knowing the 2020 market price.

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

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

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?

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 �breakfast club� membership that entitles customers to a breakfast ...

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

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

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

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?

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

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

Chemistry
is it a double replacement?

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

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 ...

10th grade
mass: 2.04 molar mass of MgSO4: 24.3+32.1+16*4=120.4 moles= 2.04/120.4 = 0.0169mol

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

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

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 ...

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?

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.

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.

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]; ...

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]; ...

English
need a spesch

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: ...

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 ...

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 ...

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 ...

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, ...

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 ...

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.

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 - ...

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/~...

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