Questions asked by Jumbotron

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• `15cm^3` of a mixture of ethane and methane were completely oxidized by `43cm^3` of oxygen. The volumes were measured at the same temperature and pressure. What was the composition of the mixture?
  
• Differentiate `sinx` `/` `5x` + `sec^2 x"` ?
  
• Does Socratic.org have a Whatsapp Group?
  
• Differentiate `sinx/(5x+sec^2x)`?
  
• A copper wire of length `L1 = 6m` and cross sectional area of `A1 = 4mm^2` has the same resistance as another copper wire of length `L2 = 18mm.` What is the ratio between the masses of the two wires, m2/m1?
  
• An object of mass `m=20kg` is pushed by four forces; east by a `10N` force, west by a `30N` force, south by a `20N` force and north by `20N` force. What is the magnitude of the acceleration of the object?
  
• The mean of four consecutive even numbers is 2017. What is the difference between the highest and the lowest digits of the highest even number?
  
• The sum of the ages of five students is as follows: Ada and Bob is 39, Bob and Chim is 40, Chim and Dan is 38, Dan and Eze is 44. The total sum of all the five ages is 105. Questions What is the age of the youngest student? Who is the oldest student?
  
• If `x^4=5`, what is the value of `x^6`?
  
• What is the meaning of this Greek word "scientia rerum per ultima causa"?
  
• `x+y=5` and `x^y+y^x=17` Find the value of `x and y`?
  
• `8x=4^x`.. Find x?
  
• The ratio of the sum used of nth term of 2 Aps is `(7n+1):(4n+27),` Find the ratio of the `nth` `term..`?
  
• The first and second terms of a geometric sequence are respectively the first and third terms of a linear sequence The fourth term of the linear sequence is 10 and the sum of its first five term is 60 Find the first five terms of the linear sequence?
  
• How are X - rays formed ?
  
• `(x+1) (x+3) (x+6) (x+4) = 72..` Find x?
  
• `(1 + 3i) (2 - ki) = 29` ?
  
• If `p and q` are positive integers with `pq = 36,` then `p/q` cannot be.... ? A. 1/4 B. 4/9 C. 1 D. 2 E. 9
  
• If `(1/125)^(a^2 + 4ab) = (3sqrt625)^(3a^2 - 10ab)` and if `a and b` do not equal 0.. `a/b = ........` ?
  
• Factorise `4x^2 - 9y^2 + 20x + 25` ?
  
• When an article is sold for `$703`, loss incurred is `25%` less than the profit earned on selling it at `$836`. What is the selling price of the article when it earns a profit of `20%`?
  
• If `2Log_a x + Log_a(ax) + 3Log_a(a^2x) = 0`, Find `x`... ?
  
• `2loga_x + loga_(ax) + 3loga_(a^2x) = 0`, Find `x` ?
  
• In how many ways can 2 men and 3 women sit on a straight line if the men must sit on the ends ?
  
• How many committee of size 5 consisting of 3 men and 2 women can be seated from 8 men and 6 women if a certain man must not be on the committee ?
  
• Find the number of ways of arranging `n` people in a straight line, if two particular people must always be separated..?
  
• How many moles of electrons are required to deposit `5.6g` of Iron from a solution of Iron(II) tetraoxosulphate(VI) ? [Fe = 56, S = 32, O = 16]
  
• Solve simultaneously..? `x = 3y` and `x = 1/2 (3 + 9y)`
  
• If... `color(white)x^(x + 1)C_3 - ^(x - 1)C_3 = 16x = ?`
  
• If... `f^-1 ((x + 1)/x) =x^3` Find `f^-1 (2) + f(8)`...?
  
• If.... `a/b + b/a = 10` And... `a^2/b^2 + b^2/a^2 = 98` Find... `a^3/b^3 + b^3/a^3` Also can anyone find a formula to generate higher powers??
  
• Solve... `5 - x = sqrt(x + sqrt(x + sqrt(x + sqrtx)))` Find `x`?
  
• Solve simultaneously..? `x = 3^y` and `x = 1/2 (3 + 9y)`
  
• Solve the following equation...? `2^(4x) - 5(2^(2x - 1/2)) + 2 = 0`
  
• `s = (px)/d (d/2 - x)` Make `x` the subject of formula..?
  
• Solve:? `5x (1 + 1/(x^2 + y^2)) = 12` and `5y (1 - 1/(x^2 + y^2)) = 4`
  
• `s = (a(r^n -1))/(r-1)` Making `'r'` the subject formula..?
  
• Given that; `5log_4 a + 48log_a 4 = a/8` Find `"a"`?
  
• `x^2+y^2+2xy = 84 and x^2+y^2+sqrt(xy) = 14` Find, `x and y`?
  
• `5e^x = x^3`, find `x`?