2,563 Answered Questions for the topic Maths

01/11/15

Probability in a game of chess
In a game of chess, you can win, draw, or lose.  Gary plays two games of chess against Mijan. The probability that Gary will win any game against Mijan is 0.55 The probability that Gary will... more
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Maths

01/09/15

URGENT HELP
simplify this expression : 8s - 5t - 2s + 2t Can you please be quick ? thank you :)
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Maths

12/19/14

The indicator of oil tank shows 1/5 full. when truck delivers 165 gallons oil, the indicator shows 4/5 full. What is the capacity ) of the tank?
options in gallons are 55 145 105 275 plz explain properly
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Maths

12/08/14

Find all t such that 8ln(t+1)=16
a) 8ln(t+1)=16   b) 10=2e^t+2
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Maths

11/27/14

sum of two numbers is 2 and their sum is 6 .what are these two numbers?
sum of two numbers is 2 and their sum is 6 .what are these two numbers?
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11/18/14

if a power b=b power a then prove a=b
if a power b=b power a then prove a=b  
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Maths

11/17/14

quadratic equation
The condition that the roots of equation x3+3px2+3qx+r=0 satisfied, is
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Maths

11/16/14

if it took tom 3hrs to travel 22km how fast was Jack travelling if he arrived 20mins after assuming they left at the same time?
please write out steps to get the anwser
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11/08/14

Expanding Square Roots
Expand (√5 + 2√3)(√5 -2√3). Express your answer as simply as possible.   Please explain how to answer this question. Thanks :)
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11/08/14

Rationalising Denominators
Rationalise the denominator of 21/√7 and simplify the answer.   Please explain a) what this question means and b) how to answer it. Thanks :)
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11/08/14

Solving Algebraic Fractions
Solve 3/x + 3/2x = 2   Please explain how to answer this question. Thank you :)
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11/08/14

3 x square root of 27 = 3^n
3 x square root of 27 = 3^n  Find the value of n.   Please explain how to answer this question. Thank you :)   P.S. How do you insert a square root symbol (so as to make asking questions like... more
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Maths

11/03/14

Whats the answer to the following question?
Find the quotient to two decimal places: 6742 divided by 22
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11/03/14

Really need urgent help with tensors!!
So say a tensor and vector have components Tαβγ, and vα, respectively in a coordinate system xμ. There is also another coordinate system x'μ   I want to show that Tαβγvβ = Tαβγvβ   Please if... more
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Maths

11/02/14

If a sheet of steel 4' by 8' weighs 96 lbs. What is the weight per square foot?
If a sheet of steel 4' by 8' weighs 96 lbs. What is the weight per square foot? 
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Maths

11/01/14

profit and loss
A shopkeeper listed his price of goods 30% above CP. He sells half the stock at this price, one fourth of stock at discount of 15% and the remaining at 30% discount. His overall profit was?
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Maths

11/01/14

time and work
A takes 3 times long as B+C together and B takes 4 times as long as A+C together. All 3 working together takes 24 days to complete, then time taken by A alone to complete???    
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Maths

10/29/14

parabola help!!
When waiting to land, an airplane is traveling above the airport in a holding pattern that can be modeled by the equation 49x^2 + 64y^2 = 3136, with the air traffic control tower at the origin.... more
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Maths

10/28/14

compound interest
A man gave 50% of his savings of 84,100 to his wife and divided the remaining the sum among his 2 sons A and B of 15 yrs and 13yrs resp.He divided in such a way that each of his son, when they... more
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Maths

10/28/14

number system
x^2+y^2+1=2x, find value of x^3+y^5?
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Maths

10/27/14

number system
The multiplication of 3 digit number XY5 with digit Z yields X215. what is X+Y+Z???
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Maths Math

10/23/14

A cuboid has a square base of side x cm. The height of the cuboid is (x + 4) cm. The volume of the cuboid is 150cm^3. Show that x^3 + 4x^2 = 150
A cuboid has a square base of side x cm. The height of the cuboid is (x + 4) cm. The volume of the cuboid is 150cm^3. Show that x^3 + 4x^2 = 150
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Maths

09/27/14

binomial theorem
the number of distinct terms in the expansion of (1+px)20 +(1-px)20 is...?
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Maths

09/27/14

Binomial theorem
IF α=(5/2!*3)+ 5*7/3!*32+5*7*9/4!*33.....THE FIND VALUE OF α2+4α
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Maths

09/27/14

binomial theorem
The coefficient of xn in the expansion of (1+x+x2+......)-n  is?
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