Frame a formula for " A number x multiplied by itself is 25 more than the number".
2x2 = 25
2x2 + x = 25
x2 = x + 25
x2 + 25 = x
Given make x as the subject of the formula.
Given (a + b)/a = x.Find b if x = 5 and a = 10.
30
35
40
45
Given make v the subject of the formula.
If v2 = u2 + 2as Find s when v = 20, u = 10 and a = 5?
50
Frame a formula " The product of 3 consecutive numbers ( the smallest being x is 310).
x × ( x + 1) × (x + 3) = 310
x × (x + 2) × (x + 4) = 310
x × (x + 1) × (x + 5) = 310
(x + 1) × (x + 3) × (x + 5) = 310
Obtain the formula fort the statement : when thrice a certain number is subtracted from 64, the result is 28.
2 - 3 x = 64
64 - 3 x = 28
28 = 3x + 64
None of these
A number decreased by 15 is 35.Derive the formula
x - 15 = 35
15 - x = 35
35 - 15 = x
x -35 = 15
Given s = d/t . find d when s = 36 and t = 5
180
120
160
140
If A = π r2 find A when r = 14 cm and π = 22/7 ?
516 cm2
616 cm2
716 cm2
916 cm2
