02/11/16

Euler's Theorom
Proof of Eular's Theorom F+V-E=2
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02/10/16

High school reunion
21 people came to celebrate their ten-year high school reunion. Eachperson shook hands once with all the other persons. How many handshakes wereexchanged at the reunion?
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02/10/16

could someone help me with math?
Name the base and exponent in this expression. (-2/3)^4   The base is _____. The exponent is ______. Use the definition of exponents as repeated multiplication to simplify. (-2/3)^4   i'm... more
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02/10/16

If a tire rotates at 400 revolutions per minute when the car is traveling 72km/h, what is the circumference of the tire?
Please help for my homework which is due on Friday.
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02/09/16

independent and dependent events
Which events are independent?   (a) you draw two colored cards at the same time and get one red and one green (b) you choose two different ice cream flavors (c) you draw a card from a deck,... more
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02/09/16

Empirical Rule
Approximately what percent of the values in a sample are within (plus or minus) 2 standard deviations of the mean using the empirical rule?
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02/09/16

There are 9 flat and 6 diagonal planes on a 3 by 3 tic tac toe cube. How many tic tac toes can you make?
I don't know how to do this
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02/09/16

What percent of 60 is 9
I need answers to my puzzle time homework because my teacher doesn't help me
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02/09/16

Geometery QA
a 5in by 8in photo was enlarged to make a poster. The dimensions of the poster are x2-6 in by x 2+12 poster. What are the dimensions of the poster  
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02/09/16

I bought 2 1/2 gallons of paint but I only used 2/4 gallons of the paint. How much paint do not have left
i am trying to find the answer to this qustion 
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02/09/16

Solve X=Log0.25 to base 8
X=Log8(0.25) will it have same answer with Log8(0.25) without X?
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02/09/16

Algebra 2-
If one is added to the reciprocal of three times a number, the result is five times the reciprocal of the number.  What is the number?
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02/09/16

Algebra 2-
Solve the equation for X     z          y ----- = ------  y-x      z-x
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02/09/16

PLEASE HELP ONLINE ALGEBRA TEXT QUESTON
help me please help help help                                                Julie is a math tutor. She charges each student $210 for the first 7 hours of tutoring and $20 for each additional... more
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02/09/16

After 7 hours of burning, a candle has a height of 22.8 centimeters. 26 hours burning,height is 11.4 centimeters.height of the candle after 15 hours?
Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. After 7 hours of burning, a candle has a height of 22.8 centimeters.... more
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02/08/16

Solve for t in: 3(5)^(t) = 4(0.25)^(t+1) in the exact value
I have to solve for t using logs or natural logs and find the exact value of t. I've been trying for over an hour but have had no luck, thank you in advance to whoever solves!
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02/08/16

In how many ways can 9 keys be placed on a key ring?
Remember, each key can face two ways (the jagged side up or down)
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02/08/16

Architect builds 130 square foot room and 140 square foot room, what is the greatest integer the adjoining wall could have
Adjoining wall of two rooms, square footage of each given
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02/08/16

HOW MANY LICENSE PLATES WERE ASSIGNED BETWEEN THE ONES SHOWS BELOW? ONTARIO LICENCE PLATES
An Ontario licence plate consists of four letters followed by three digits. Plates are assigned in numeric order, then alphabetical order. Assume all letters of the alphabet and all digits can be... more
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02/08/16

Calculus slope question
A curse has a slope of 4x+2. What is the equation of the curve if it passes through the point (1,8)? Does this just mean to find the equation of the tangent line? 
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02/08/16

What is the answer to the equation 3(x+2)=-15
Please help me out I need help.  
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02/08/16

cost $50 each.buy 1 ring and get the 2nd for 25% off and a 3rd for 50% off. The sales tax is 8%. buy 3 rings using the deal. How much money will Traci save?
This is to help me for a test coming up in my school, can someone help cause I don't understand this problem.
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02/08/16

what does the x mean in the equation 3x+7=5x-13
I'm having trouble with this equation so please help out.  
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02/08/16

Mike covered 24 kilometers in 2 hours and the next 18 kilometers in 1 hour. What is his average speed per hour for the total journey?
answer choices are 9,6,14, and 12 kilometers
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02/08/16

An airport parking lot is a rectangle 1 7/10 of a mile wide and 2 3/4 of a mile long. How much fencing is needed to enclose the lot?
An airport parking lot is a rectangle1 7/10 of a mile wide and 2 3/4  of a mile long.  How much fencing is needed to enclose the lot?  Show work using fraction arithmetic, and include units with... more
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