15-3n=n-1
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This problem asks us to find 2 numbers, n1 and n2, with the following relations between them: * n2 = 4 n1 * n1 + n2 = 45 Substituting the first equation into the second one gives us: * n1 + 4n1 = 45 which gives us * n1 = 9. We can now use this solution to find n2 with the first equation * n2 = 4 n1 = 36 So the first number is 4, the second number is 36.
it is the formula of refraction. this is based of snell's law and its about the incident ray and the refracted ray. page 3 of this should be of help to you
It is: 1*17 = 17 which is a prime number
by just doing the problem
3r-2 for r=65