If 31410 - 2567 = 340x, find x.<...
If 31410 - 2567 = 340x, find x.
7
8
9
10
Correct answer is A
31410 - 2567 = 340x,
Convert 2567 and 340x to base 10, such that:
314 - 139 = 3x2 + 4x
=> 3x2 + 4x - 175 = 0 (quadratic)
Factorising, (x - 7) (3x + 25) = 0,
either x = 7 or x = -25/3 ( but x cannot be negative)
Therefore, x = 7.
The number 25 when converted from the tens and units base to the binary base (base two) is one ...
Solve the equation for the positive values of θ less than 360o. 3 tan θ + 2 = -1...
In the diagram, PQS is a circle with center O. RST is a tangent at S and ∠SOP = 96o. Find ∠P...
The table above shows the scores of a group of 40 students in a physics test. If the mode is m an...
If the simple interest on a sum of money invested at 3% per annum for 212 years is N123...