# Form 3 Questions and Answers on Formulae

Form 3 Questions and Answers on Formulae.

In this course, several questions on the sub-topic formulae will be solved. Solutions are available in video format.

Lessons (**22**) * SHARE*

- 1.
Make x the subject of the formula #N = P/ sqrt((ax + bx))#

3m 36s - 2.
Make n the subject of the formula #E = sqrt ((x(n-x))/(n-1)) #

4m 18s - 3.
Make P the subject of the formula #A = (-EP)/sqrt(P^2 + N)#

0m 0s - 4.
The volume V #cm^3# of an object is given by #V = 2/3 pi r^3 (1/(sc^2)-2)# Express c in terms of #pi#, r, s and V

5m 51s - 5.
Make V the subject of the formula #T= 1/2m(u^2-v^2)#

2m 45s - 6.
Given that #y = (b - bx^2)/(cx^2 - a)# make x the subject

3m 40s - 7.
Given that log #y = log(10x^n)#, make n the subject

3m 26s - 8.
Make x the subject of the formula #P = ((xy)/(z + x))^(1/2)#

3m 17s - 9.
Make x the subject of the formula: #S = W sqrt(a^2 - x^2)#

3m 26s - 10.
Make y the subject of the formula: #P = (xy) /(x - y) #

0m 0s - 11.
Make c the subject of the formula: #T = x sqrt (c^2 + d^2)#

3m 15s - 12.
Make P the subject of the formula #P^2 = (P-q)(P-r)#

3m 26s - 13.
Make s the subject of the formula #sqrt p = r sqrt(1 - as^2)#

3m 21s - 14.
Make b the subject of the formula: #(bd)/sqrt ((b^2 - d))#

3m 44s - 15.
Given that #y = (2x - z)/(x + 3z)#, express x in terms of y and z.

2m 55s - 16.
Make h the subject of the formula #q = (1 + rh)/(1 - ht)#

2m 41s - 17.
Make x the subject of the equation: #3y = y + (p)/(q + 1/x)#

4m 21s - 18.
Make s the subject of the formula: #w = root 3(s + t)/(3) #

2m 34s - 19.
Make n the subject of the equation: #r/p = m / sqrt (n - 1)#

0m 0s - 20.
Make d the subject of the formula, #P = 1/2 mn^2 - (qd^2)/n#

3m 7s - 21.
Make s the subject of the formula: #w = root 3 ((s + t)/(s))#

1m 42s - 22.
Make t the subject of the formula #s = sqrt((3d(t-d))/(8))#

2m 43s

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