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Why is the sum of the reciprocals of all of the divisors of a perfect number equal to 2?
Suppose N is a perfect number. Then N cannot be a square number and so N has an even number of factors.Suppose the factors are f(1) =1, f(2), f(3), ... , f(k-1), f(k)=N.Furthermore f(r) * f(k+1-r) = N for r = 1, 2, ... k so that f(r) = N/f(k+1-r)which implies that 1/f(r) = f(k+1-r)/NThen 1/f(1) + 1/(f(2) + ... + 1/f(k)= f(k)/N + f(k-1)/N + ... + f(1)/N= [f(k) + f(k-1) + ... + f(1)] / N= 2N/N since, by definition, [f(k) + f(k-1) + ... + f(1)] = 2N
What times 2 equals 34?
17
How do you write the celsius formula?
°F to °C: [°C] = ([°F] − 32) × 5⁄9°C to °F: [°F] = [°C] × 1.8 + 32
How much is 1 mm in a m?
Mo t h e r f o c k e r ! !
What is x when its the subject of the equation c minus dx equals ex plus f?
ex+f = c -dx ex+dx = c -f x(e+d) = c -f x = c -f/(e+d)
What is kcuf backwards?
Why don't you tell us? I bet you know... -_-
What is the relation between Celsius kelvin and Fahrenheit?
C to F: F = 1.8*C + 32C to K: K = C - 273.15 F to C: C = 5/9*(F- 32) F to K: K = 5/9*(F- 32) - 273.15 K to C: C = K + 273.15 K to F: K = 1.8*(K - 273.15) + 32
How many C in a K?
1 °C = 1 K and 1 ℃ = 1.8 °F
What is the melting point and boiling point of lead?
The melting point is 600.61 K (327.46 ° C, 621.43 °F) and the boiling point is 2022 K (1749 °C, 3180 °F)!
What is the melting and boiling point of nickel?
The melting point of nickel is 1453°C (2647°F) and the boiling point is 2732°C (4950°F).
What is oxygen's boiling point and melting point?
Melting Point: -218.4 °C (54.750008 K, -361.12 °F) Boiling Point: -183.0 °C (90.15 K, -297.4 °F)
What is the boiling point and the melting point of magnesium?
MagnesiumMelting point : 650 °C , 923 K , 1202 °FBoiling point : 1091 °C, 1363 K, 1994 °F
What is the melting point and boiling point of mercury?
The melting point of mercury is 234.32 K (-38.83 °C, -37.89 °F) and the boiling point is 629.88 K (356.73 °C, 674.11 °F).Melting point234.32 K,  -38.83 °C,  -37.89 °FBoiling point629.88 K,  356.73 °C,  674.11 °F
What are mercury melting points and boiling points?
The melting point of Mercury is 234.32 K (-38.83 °C, -37.89 °F) and the boiling point is 629.88 K (356.73 °C, 674.11 °F).Melting point234.32 K,  -38.83 °C,  -37.89 °FBoiling point629.88 K,  356.73 °C,  674.11 °F
What 90.19 Kelvin on the Fahrenheit scale?
90.19 K is equal to -297.33 °F Converting from K to °C is 90.19 -273.15= -182.96 °C and from °C to °F is [-182.96*1.8] +32= -297.33 °F
What are two scale scientists used to measure temperature?
Actually, there are four: Centigrade (C) and Kelvin (K) (K = C - 273.15) Fahrenheit (F) and Rankine (R) (R = F - 459.67)
Where can you get a buckethead costume?
K f c
