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Ian

312 answers

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a level maths algebra calculus complex numbers cosmology differentiation functions integration math mathematics maths maximum and minimum physics polynomials pythagorean triples quantum physics (basic) science & mathematics

About Ian

Retired chap. Enjoys helping others with maths and physics.

Member Since February 8, 2009
61, Male

Answers

1.both digits are greater than 3. 2.the sum ...

Possibilties before rules: UNITS: 1 2 3 4 5 6 7 8 9 TENS: 1 2 3 4 5 6 7 8 9 Rule 1: Digits are greater than 3, so new possibilities are UNITS: 4 5 6 7 8 9 TENS: 4 5 6 7 8 9 Rule 2: Sum of digits ...

Submitted by Ian 1 day ago

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Please, help me with this qustion: Suppose that ...

Number of infections in millions, N = sqrt(x) +3 where x is years from now a) How many cases of the infection will there be 9 years from now? Answer: 6 million infections Show the work here ...

Submitted by Ian 1 day ago

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Required force of sled

Yes, F (Newtons) = m (kg) x a (m/s^2) = 150 x 0.71 = 106.5 Newtons Regards - Ian

Submitted by Ian 2 days ago

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For p a prime, the poloynomial p[x]=x^p-Sum[x^j,{j ...

I am not at all familiar with this subject, but I like maths so I will have a go, (but I am not completely sure that this is what your teacher wants). In trying to understand your question I have ...

Submitted by Ian 4 days ago

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Mix fractions

That website seems to have it covered but here is an example. To add mixed fractions 2 2/3 + 4 3/4 + 3 5/6 1) Add the whole numbers: 2 + 4 + 3 = 9 2) Find a common denominator for fractions, (12 ...

Submitted by Ian 11 days ago

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Math Question

Yes, 5 PER CENT means 5 in every 100 so you multiply by 5/100 to get 50,000 Regards - Ian

Submitted by Ian 13 days ago

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Math Question Business Math

Just write down $1200 x (1.0575)^2 = $1341.97 To explain why, there are a few things you need to understand first, and I will try to do that using the simpler example of 100 with 5 percent ...

Submitted by Ian 13 days ago

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Last comment posted 12 days ago by Raeb

Help! I don't think this way!

This is not maths but we try to be helpful here. B: Window on the left D & E: Lady in centre reading mag not Miss Smith, (who is reading a book). Miss Jones in centre, so options are now:- W BJS ...

Submitted by Ian 13 days ago

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