2,563 Answered Questions for the topic Maths

Maths

09/17/15

whats the mystery number?
if i divide the number by 3 the remainder is 1 if i divide the number by 4 the remainder is 2 if i divide the number by 5 the remainder is 3 if i divide the number by 6 the remainder is 4
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Maths Volume

09/17/15

I need to find the volume of a cylinder with a length of of 60m and a radius of 8m
i know that the formula is pi r^2 times H   What does pi equal in this case? Does the value of pi change? Because i completed my previous questions with pi as 3.142 and the answers were just off.... more
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Maths

09/09/15

could you please help me answer this
an average math text book cost $25 in 1980 and $60 in 1995. write an equation that will give the price of a mathbook in any given year , and use this equation to predict the price of the book in 2010. more
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Maths Equations

09/07/15

Please solve 8x/3(x-7) all -3=-19
Please solve for x and show working   Thanks so much 
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09/05/15

Help me with my project?????
Make a hypothesis in which you suggest which coin will have the highest density and which will have the lowest density. A model hypothesis might be: "If the (fill in the name of a coin) has a... more
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Maths

09/03/15

help me please
Fred cycled from home to his friend's house and back again.The distance between their houses is 20km.On his way to his friend's house, Fred cycled at x km/h.on the way back, Fred cycled 2 km/h... more
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Maths

08/30/15

one fifth of all value lamps are already defect at the time of purchase. how many has frank got to buy in order to ensure that he has 16 functioning lamps?
one fifth of all value lamps are already defect at the time of purchase. how many has frank got to buy in order to ensure that he has 16 functioning lamps?
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08/29/15

Probability Math Questions
In a class of 40 students,30 love Mathematics and 20 love Physics.If P(E) is the probability that a pupil selected at random from the class loves both physics and Mathematics,find the range of... more
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08/28/15

velocity and torque are
the value of sine 90 degree is  
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Maths

08/27/15

Suppose Australia's population of wombats is now around 23,000
Determine the percentage rate of growth per annum what will result in the wombat population reaching 46,000 in 25 years. Determine the growth rate to the nearest 0.1%   Please help me Thanks so... more
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Maths

08/25/15

Please factorise 4(x-d)^2+(x-d)
Show working please. Thanks so much
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Maths

08/25/15

The selling price of a pair of shoes was reduced by 30%. The original price was $255. What is the new selling price?
Can someone please how me and show the working out
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Maths

08/24/15

Consider the following multiple in decimal notation 999.abc = def.123
Determine the digits a,b,c,d,e & f
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08/23/15

Decay Factor Form Maths
For my maths assignment, i had to do an experiment using a pendulum and measuring the amplitude of every 10 swings up to the 80th swing. One of the questions is find the ratio between consecutive... more
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Maths

08/22/15

Proove that
m5 - 5m3 + 4m is always divisible by 120, m ∈ N
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Maths

08/22/15

show that (px + qy)(pq + xy) = 4pxyq
p, q, x, y are positive
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08/20/15

(3a^5/b^3)^4 ÷ (-9a^3/b^6)^2
(3a^5/b^3)^4 ÷ (-9a^3/b^6)^2
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08/19/15

Learning about simultaneous equations but don't know how to use it in this problem
On a particular day, Peter has to leave home at a certain time and travel to town P for a meeting at 10 am. If his average speed is 54 km/h, he will be 12 minutes late. If his average speed is 72... more
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Maths

08/18/15

0 0 Arnold imports invest $400,000 at 8% p.a simple interest
1) How many years will it take for the investment to triple in value?2) How much is the investment worth if it triples in value?3) How much interest is earned?4) Calculate the time for the... more
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Maths

08/17/15

Arnold imports invest $400,000 at 8% p.a simple interest
1) How many years will it take for the investment to triple in value? 2) How much is the investment worth if it triples in value? 3) How much interest is earned? 4) Calculate the time for the... more
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Maths

08/17/15

Annette invests $4,000 for three years at 5.7% p.a simple interest
Please can someone help me find 1) the total amount of interest that Annette will have collected at the end of the 3 year period. 2) How much money Annette will have in total after the 3 year... more
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Maths Algebra

08/17/15

i need to evaluate 80 divided by 4 multiplied by (2-4) divided by 40
 Please help
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Maths

08/17/15

Factorise: (2a-3b)(p+q)+(a-b)(p+q)
My maths I need help on this beacuse i cant calculate well enough
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Maths

08/16/15

fraction subtraction
At the start of your journey you have 1 3/10 litres of petrol. At the end you haveused 7/15 of a litre of petrol. How much petrol do you have left?
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Maths

08/16/15

fraction addition
 you have 2 length of cable one is 3 5/6m and one is 1 1/4m   how many metres do you have? 
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