01/08/14

How do you find the perimeter of a rectangle/square when you have the area of circles inside of it?
I am stuck on a problem. There is a rectangle and four circles enclosed inside of it.  Thee problem gives me the area of the circles, but I do not know how to solve this problem based on this... more
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01/07/14

Area of Block Letter H which is 10'x10'x2.5'
The sixth grade class at Hernandez School is building a giant wooden H for their school.  The "H" will be 10 feet tall and 10 feet wide and the thickness of the block letter will be 2.5 feet.  How... more
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01/07/14

amount originated
if a man spends one fifth of what is in his wallet and then one fifth of what remained, and has spent $72.00, what was the amount originally in his wallet?  
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01/07/14

currently, you have $80 and jay has $145. you decide to save $6 of your allowance each week and jay spends his whole allowance plus an extra $7 each week. how I
currently you have $80 and your sister has 145.you decide to save $6 of your allowance each week and your sister spends her whole allowance plus an extra $7 each week. How long will it be before... more
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01/05/14

How do you solve the system of equations using the inverse matrix: {5x-2y+16 and {x+3y=10
I tried to find the inverse but in all my multiplying, it ended up not being a inverse matrix and instead a random set of fractions in my matrix.
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01/05/14

how is the area of the circle calculated?
A rectangular plywood measures 2.1m by 70 cm . circular discs are to be cut out from the plywood of diameter 14 cm . how many discs can be cut and how much plywood will be left?
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01/03/14

A turbine was steadily producing 3 volts across a 30 ohm resistor over a period of 30 seconds. What is the power output?
I am not sure, but I believe the equation to calculate the power output is  Power(w) = V2/ R    
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01/02/14

math story problem
How do I solve this question?          A bird is sitting 16 feet above the ground in an appple tree dislodges an apple. After how many seconds does the apple land on the ground?  (assume no... more
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01/01/14

AP chem gases
Gas (A) Methane, (B) Ethane, (C) Propane, (D) Butane
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01/01/14

AP chem gases
    D. HBr and NH3
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01/01/14

Which of the following?
Which of the following is true about the graph of y=ln abs(x^2-1) in the interval (-1, 1)?   a) It is increasing. b) It attains a relative minimum at (0, 0). c) It has a range of all real... more
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12/31/13

The height in feet h of a water bottle rocket launched from a rooftop is given by the equation h = -16 t 2 + 320t + 32, where t is the time in seconds.
The height in feet h of a water bottle rocket launched from a rooftop is given by the equation h = -16 t 2 + 320t + 32, where t is the time in seconds. After the rocket is fired, how long will it... more
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12/25/13

Shortest route to take when delivering Christmas presents?
Huntsville is a small town with only six families. There is at least one child in each family which is on Santa's "nice" list.The Oskerville's house is five kilometers from the Huntsman's house.... more
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12/19/13

geri wants to put 6 stamps on some pages in her stamp book and 9 stamps on other pages. how could she do this with stamp set of 78
geri wants to put 6 stamps on some pages in her stampbook and 9 stamps on other pages. how could she does  with the stamp of  78
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12/18/13

what is three things waves include?
i cant find out what the anser is i cant find itin any of mybooks!DX
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12/17/13

All but 2 wore white. All but 2 wore yellow. All but 2 wore red. How many total?
THis is a question on my 4th grade grandson's homework.
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12/16/13

Percentage via standard deviation
The mean height of adult men in the Dinaric Alps is 73 inches with a standard deviation of 3 inches. If the average height for the adult american man is 69 inches, what percent of adult men in the... more
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12/16/13

What is the value of x in 4x + 3y +15 2X - 5y+1
Using elimination, what is the value of x and y in the following:  4x + 3y = 15                                                                                             2X - 5y = 1
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12/16/13

A theater sold a total of 240 tickets for a show, some of which were adult tickets and the rest child tickets. An adult ticket cost $15 and a child ticket cost
An adult ticket cost $15 and a child ticket cost $9. If the total ticket sales amounted to $3060, construct a solve a system of equation to find how many of each type of ticket were sold. Thank you... more
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12/15/13

How many mL of a 0.10 M NaOH solution are needed to neutralize 15 mL of 0.20 M H3PO4?
How many mL of a 0.10 M NaOH solution are needed to neutralize 15 mL of a 0.20 H3PO4?  
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12/15/13

How many grams of Mg(OH)2 will be needed to neutralize 25 mL of stomach acid if stomach acid is 0.10 M HCl?
How many grams of Mg(OH)2 will be needed to neutralize 25 mL if stomach acid if stomach acid is 0.10 HCl?
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12/15/13

If the probability distribution for the random variable X is given in the table, what is the expected value of X?
xi – 25 20 30 40 pi - 0.40 0.20 0.30 0.10
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12/15/13

Find three consecutive integers whose sum is -78
I've tried reading this problem over and over but I'm really bad at math please help me. it would help me so much for brains like you guys on here
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12/15/13

A car needs 3 gallons of gas every 70 miles. how much gas would it need for 105 miles?
I tried dividing 3 gallons by 70 miles to get the miles per gallon but it docent help.
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12/15/13

2x+5y=7 3x+6y=3
Use elimination to solve the system of equations. 2x+5y=7  3x+6y=3
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