Tuesday
December 6, 2016

# Posts by Javier

Total # Posts: 60

science
I believe that our solar system formed by the same process as star formation. A huge cloud of dust and gas collapsed and condensed. Gravity pulled matter into the center core, nuclear fusion began, and our Sun was created. Remaining matter and gas clumped together to form the ...
August 31, 2016

Chemistry
For the reaction, calculate how many grams of the product form when 3.2 g of Na2O completely reacts. Assume that there is more than enough of the other reactant. Na2O(s)+H2O(l)→2NaOH(aq)
July 17, 2016

Statistics
You buy a lottery ticket to a lottery that cost \$10 per ticket. There are only 100 tickets available to be sold in this lottery. In this lottery there are one \$500 prize, two \$100 prizes, and four \$25 prizes. Find your expected gain or loss. Do you still want to play raffle?
May 3, 2016

Statistics
You Buy a lottery ticket to a lottery that cost \$10 per ticket. There only 100 tickets available to be sold in the lottery. In this lottery there are one \$500 prizes, two \$100 prizes and four \$25 prices. Find your expected gain or loss. Do you still want to play the raffle?
May 3, 2016

math
An ant has 6 legs and a Spider has 8 legs. In a insectarium display, there are some spiders and ants. From these spiders and ants, there are 60 legs altogether. how many spiders and ants could there be?
April 14, 2016

Holy redeemer
What is the compound interest on a \$40,000 loan @ 16% for 3 years?
October 6, 2015

earth science
the death is a black dwarf
September 18, 2015

Math- Vector Calculus
A manufacturer sells two products, one at a price of \$3000 a unit and the other at a price of \$12000 a unit. A quantity q1 of the first product and q2 of the second product are sold at a total cost of \$5000 to the manufacturer. Express the manufacturer's profit, as a ...
January 31, 2015

chemistry
If you have 22.46 mLs of a gas at STP, how many moles of gas do you have?
October 29, 2014

physics
a projectile with mass (m)=35grams is placed on a vertically positioned spring. the spring constant (k)=6500N/m. the projectile is launched straight up into the air by compressing the spring a distance (x)=8cm.How high does the projectile go?
October 21, 2013

physics
a projectile with mass (m)=35grams is placed on a vertically positioned spring. the spring constant (k)=6500N/m. the projectile is launched straight up into the air by compressing the spring a distance (x)=8cm.How high does the projectile go?
October 21, 2013

Alg 1
-2,-3
April 13, 2013

Maths
Gerry earns \$0.60 for every canned drink he sells. He earns an extra bonus of \$5 for every 20 cans he sells. How many cans does he sell if he earns \$53.40? Kevin and Janet had 480 books in total. After Kevin gave 1/9 of his books to Janet, they had an equal number of books. ...
November 6, 2012

Maths
There are a total of 70 pebbles in Bag A and Bag B. There are a total of 120 pebbles in Bag B and Bag C. Bag C contains 3 times as many pebbles as Bag A. How many pebbles are there in Bag B? There were 27 pineapple tarts and murukus. The ratio of the number of pineapple tarts ...
November 6, 2012

Maths
There were 40 members in a hockey club. 3/8 of them were girls. When more girls joined the club, the percentage of the number of girls increased to 75%. How many more girls had joined the club? Some teachers attended a workshop. They were divided into Group X and Y. The ratio ...
November 6, 2012

Maths
The sum of 5 numbers is p. If each number is increased by 40, what is the new sum of numbers?
November 6, 2012

Trig
It says to evaluate the expression
October 19, 2012

Trig
October 19, 2012

Social
Que tipo de de sistema politico tiene la reina isabel 2
August 28, 2012

Calculus
A tank contains 2920 L of pure water. A solution that contains 001 kg of sugar per liter enters a tank at the rate 4 L/min The solution is mixed and drains from the tank at the same rate. (a) How much sugar is in the tank initially? (b) Find the amount of sugar in the tank ...
May 22, 2012

math
The number is a two-digit number. The number is an even number less than 50. The sum of the digits in the ones and tens places is the double of 5. The tens place digit is less than the ones place digit What is the number?
April 26, 2012

whenever a two-tailed test is being conducted, the the rule of thumb requires which signs?
January 19, 2012

5 Arrays 1x16 16x1 2x8 8x2 4x4
December 15, 2011

geometry
FIND THE THIRD ANGLE IN A TRANGLE IF TWO OF THE ANGLES ARE 43 AND 114
December 7, 2011

Chemistry
Please!!! its extremely urgent. i do not need answers, only how to do it A sample of nitrogen gas (N2) kept in a container of volume 10.1 L and at a temperature of 20.3°C exerts a pressure of 3.1 atm. Calculate the number of grams of gas present. Round to one decimal place...
October 17, 2011

calculus
1/tanx + 1/cotx =tanx +cotx verify
May 24, 2011

chemistry
what mass of KOH is reqired to react completely with 2.70g of H2So4 to produce K2S04 and water?
March 10, 2011

psychology
How could an adolescent (aged 12-17) face Erikson’s crisis of Generativity vs. Stagnation, which is typically experienced in middle adulthood (2 pts)?
February 2, 2011

Math
Find the maximum area of a triangle formed in the first quadrant by the x-axis, y-axis, and a tangent line to the graph of y = (x+1)^-2
November 12, 2010

history
create a college that shows how ancient greek culture is reflected in modern-day society.
November 9, 2010

chemistry
A block of metal has a width of 3.2cm, a length of 17.1 cm, and height of 5.2 cm. Its mass is 1.1 kg. Calculate the density of the metal
September 11, 2010

Physics
A copper wire 0.40m long carries a current of 6.0A and weighs 0.35N. What strenght magnetic field is required to balance the weight of the wire?
May 5, 2010

Physics
A wire 75cm long carrying a current of 6.0A toward the north passes through a uniform magnetic field. The magnitude of the force acting on the wire is 0.60N and is directed downward. What is the strengh and direction of the magnetic field?
May 5, 2010

Physics
A 0.50m long wire is carrying a current of 8.0A toward the east. The wire passes through a magnetic field of 0.40T toward the north. What is the force which acts on the wire? What is the direction of the force.
May 5, 2010

A large pizza from Papa's Pizzeria has a diameter of 18 inches. If each large pizza is cut into 10 equal slices, what is the approximate area of 3 slices of pizza in square inches?
April 12, 2010

What is the potential difference if a resistance of 25 ohms produce a current of 250 amperes?
April 4, 2010

What is the current produced by a 9-volt battery flowing through a resistance of 2 x 10^-4 ohms?
April 4, 2010

What voltage is necessary to produce a current of 200 amperes through a resistance of 1 x 10^-3 ohms?
April 4, 2010

What resistance would produce a current of 120 amps from a 6-volt battery?
April 4, 2010

What is the current produced by a potential difference of 240 volts through a resistance of 0.2 ohms?
April 4, 2010

The Book of "The Great Gatsby" Describe the "valley of ashes." What does it look like, and what does it represent?
April 4, 2010

How many current paths are there in a parallel circuit connection?
March 31, 2010

How many current paths are there in a series circuit connection?
March 31, 2010

What happens when an insulator is wired in parallel with the bulb? is the swich open or closed?
March 31, 2010

What happens when an insulator is wired in series with the bulb? Is trhe swich open or closed?
March 31, 2010

What happens when a conductor is wired in parallel with the bulb? Is the swich open or closed?
March 31, 2010

Physics
What happens to a bulb when a conductor is wired in series with the bulb (bulb lights or dosen't light)? Is the swich open or closed?
March 31, 2010

Physics
How many possible orientations are there in a bulb, battery, and wire are there that don't result in the bulb lighting? Need four of these as drawings.
March 31, 2010

ALGEBRA
These answers are wrong they both can't be traveling at the same speed and one person be traveling father. Plug the answer 14 back into the original problem they both equal 3.
March 10, 2010

Spanish
your vocabulary its ok but u have to chek ur grammar.
February 10, 2010

NORCROSS
Two positive point charges are held in place, 0.80 m apart. They are then moved so that their electric potential energy doubles. What is the new separation between the charges?
January 23, 2010

Sheila brought \$1.95 in coins to spend at the bake sale. Her coins were all in dimes and quarters. The number of quarters she had was two less than the number of dimes. How many of each coin did she have?.
November 3, 2009

Math Application
Here is the raidus of Earth as given in the book: 3960 miles.
February 22, 2008

Math Application
A space camera circles the Earth at a height of h miles above the surface. Suppose that d distance, IN MILES, on the surface of the Earth can be seen from the camera. (a) Find an equation that relates d and h. (b) If d is to be 3500 miles, how high must the camera orbit above ...
February 22, 2008

Mathematics
A space camera circles the Earth at a height of h miles above the surface. Suppose that d distance, IN MILES, on the surface of the Earth can be seen from the camera. (a) Find an equation that relates the central angle theta to the height h. (b) Find an equation that relates ...
February 22, 2008

social studies
How do the three levels of government interact, or inter-relate?
December 18, 2007

science
Does water with salt boils faster than plain water Yes, salt increases the waters boiling point and therefore a higher temperature is needed for the water to boil. Salt does, indeed, increase the boiling point of water due to the salt but it will take longer for the water to ...
January 31, 2007

Finance
In examining the liquidity ratios, the primary emphasis is the firm´s
December 11, 2006

math
how to determine if each pair of ratios form a proportion A sweater is on sale for 52 dollars. If the original price was 78 dollars, what is the percent discount? how much candy
October 28, 2006

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