In an examination, Kofi scored x% in Physics, 50% in Chem...
In an examination, Kofi scored x% in Physics, 50% in Chemistry and 70% in Biology. If his mean score for the three subjects was 55%, find x
40
45
55
60
Correct answer is B
x+50+703=55
x + 120 = 3(55)
x + 120 = 165
= 165 - 120
x = 45%
Find the total surface area of a cylinder of base radius 5cm and length 7cm ( π = 3.14) ...
A trader bought 100 oranges at 5 for N40.00 and 20 for N120.00. Find the profit or loss percent ...
The graph above is that of a quadratic function y = 2x2 - x - 6 The roots of the equation are...
Make R the subject of the formula if T = KR2+M3...
Given that x = 2 and y = -14, evaluate x2y−2xy5...
y is inversely proportional to x and y is 6 when x = 7. Find the constant of the variation ...