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 statement of equality of two mathematical expression is called an __________.
Expression
Formula
Equation
In formula P = 2 (l x b ), make l the subject.
l = 2b - p/2
l = 2 -2b/p
l = p - 2/2b
l= p - 2b/2
Given that 1/f = 1/v - 1/u, find v if u = 4 & f = 10
0.66
6.6
66
6.0
Frame a formula for " perimeter (p) is twice the sum of its length (l) and breadth (b)
P = 2l + b
P = l + 2b
P = (l + b)2
P = 2(l + b)
Find the value of 'f' , f=uv/(u +v),if u = 6cm & v = 4cm
-24cm
-2.4cm
-10cm
2.4cm
Given v2 = u2 - 2ft,make t subject of the formula.
t = 2f (u2 - v2)
t = 2f (u2 + v2)
A number decreased by 15 is 35.Derive the formula.
x - 15 = 35
15 - x = 35
35 - 15 = x
x -35 = 15
Let the simple interest (S.I) is given by if we make P as the subject, the formula become __________.
Find the value of 'f',f =uv/(u + v), if u = 10 cm & v = 5cm
10cm
3.3cm
50cm
-3.3cm
