2,567 Answered Questions for the topic Maths

11/19/17

Question is in description....Please send help!!!
john has to figure out the number of sales people to be placed in each of five offices. He decides that the number of salespeople to be placed in each office will depend on the size of the office... more
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11/19/17

what number, when multiplied by itself, is 25 higher than the proceeding number when it is multiplied by itself
looking for an explanation as well soI can apply it to other similar problems
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Maths

11/18/17

If An^2 =30 then find n
If A2n = 30 then find n. 
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Maths

11/13/17

When you flip a biased coin the probability of getting a tail is 0.47. Find the probability of getting a head.
I'd really like some help with this question so if anyone knows the answer or the working out please let me know :)
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11/13/17

CALCULATE THE CONCENTRATION OF A SAMPLE OF BOVINE SERUM ALBUMIN
Calculate the concentration of a sample of bovine serum albumin (Mr 67,000) with an absorbance at 280 nm of 0.5, giving your answer in units of M (Molarity) (NOTE: ε at 280 nm = 1 cm3 mg-1 cm-1 and... more
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11/13/17

CALCULATE PROTEIN CONCENTRATION
Calculate the protein concentration for a sample with an absorbance at 280 nm of 0.5, giving your answer in units of mg protein/ml (NOTE: ε at 280 nm = 1 cm3 mg-1 cm-1 and a cuvette of 1cm path... more
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Maths

11/09/17

A shop sold 256 less phones on Sunday than they did on Saturday. If they sold 160 phones on Sunday how many did they sell on Saturday?
Its a third class maths problem and my brother wants me to put it on this website because he got it wrong 
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11/08/17

What is the sum of integers between two numbers if those numbers are the same?
sum of all even integers between x and y inclusive   if x is 2 and y is 10, even sum is 30what if x is 2 and y is 2 and x is 2 and y is 3
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Maths

11/07/17

A=1+3+5+7+.......2009. & B=2+4+6+......+2010 then the value of (A-B) is
Please solve this question
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Maths Equation

11/06/17

A rectangular block of land 4m X 25m is surrounded by a concrete path 1m wide, what is the area
It’s a problem solving question and it’ll be great if I receive an answer as soon as possible 
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Maths

11/06/17

if it takes 4 hours for 10 workers to mend a road, how long would it take for 8 workers?
 a maths question that i need help with
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Maths Algebra

11/05/17

Find the equation of the tangent at the origin for : siny = 2sinx
Find the equation of the tangent at the origin
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Maths Algebra

11/05/17

Prove that there are no stationary points for x^3 + xy^2 - y^3 = 5?
Prove that there are no stationary points for x^3 + xy^2 - y^3 = 5?
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11/03/17

value of x when m=2 and k=4
i need to solve this maths equation if also u can solve this equation value of m when x=19 and k=5
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11/01/17

how do you solve trigonometry multi-step questions with triangles trying to find 'x'
 how do I find the value of the length 'X' where there are two right angle triangles making up a large triangle and 'x' is one of those sides?
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Maths Algebra

10/31/17

how would i get the answer for for a cuboid with the length L=x+2and a width of x-3, also a height of x+4. All measurments are in cm.
question is: how would i write this as an expression in terms of X, for the total surface area thanks
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Maths

10/31/17

There are some $2 and 50￠coins in a purse. If the total number of coins is 17 and their total value is $22, find the total value of $2 coins
It's about equations. And have to find the total value of the $2 coins. By the format of equations and terms.
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Maths

10/30/17

It is given that 25a x 125b = 5 and also that 625a/5b = 25. Which is true: a and b are positive a and b are negative neither of the above are true.'
i got this for homework and idk what to do with it so answer it
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Maths

10/28/17

An aeroplane flies at 750km/h. If he flies 977km, how long will the flight be? To the nearest 30 min.
I just need to know if it is correct to devide the 977km by 750. The answer is 1.3, but rounded of to nearest 30 minutes?
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Maths

10/27/17

A floor is covered by 800 tiles measuring 10 cm^2. How many square tiles of side 8 cm would be needed to cover the same floor?
A floor is covered by 800 tiles measuring 10 cm^2. How many square tiles of side 8 cm would be needed to cover the same floor?
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Maths

10/26/17

one positive number is 3 bigger than another number. when the larger number is added to the square of the smaller one, the result is 33
what would the equation be
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Maths

10/26/17

Callum used 9/10 of a metre of wood to make a model boat. He used 7/8 of this amount to make a model areoplane. How much wood did he use to make the aeroplane?
Please help
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Maths

10/25/17

What is the sum of all negative factors of 105?
Plzllzlzz
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Maths

10/25/17

m and n are two prime numbers such that m+n=21 find possible values of 2n+1/m
Plz it's math
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10/25/17

A motor racing circuit has length 5 5/6 miles. A straight section of the circuit has length 1 1/4 miles. What fraction of the circuit is the straight section?
 Dividing fractions
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