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Mathematics
UTME / JAMB 2023
Change of Subject of Formula
Solution
Make x the subject of the formula: y = \(\frac {3x - 9c}{4x + 5d}\)
A
x = \(\frac {-(9c - 5dy)}{4y - 3}\)
B
x = \(\frac {9c + 5dy}{4y - 3}\)
C
x = \(\frac {9c - 5dy}{4y - 3}\)
D
x = \(\frac {-(9c + 5dy)}{4y - 3}\)
medium Difficulty
Study Solution
Mathematics
WAEC / WASSCE 2023
Change of Subject of Formula
Solution
make x the subject of the relation \(y = \frac{ax^3 - b}{3z}\)
A
x = \(\sqrt[3] \frac{ax^3 - b}{3z}\)
B
x = \(\sqrt[3] \frac{3yz - b}{a}\)
C
x = \(\sqrt[3] \frac{3yz + b}{a}\)
D
x = \(\sqrt[3] \frac{3yzb}{a}\)
medium Difficulty
Study Solution
Mathematics
UTME / JAMB 2022
Change of Subject of Formula
Solution
Given that r = \( \sqrt \frac{3v}{\pi h} \), make v the subject of the formula
A
v = 3 \(πr^2\) h
B
v = \(\frac{πrh}{3}\)
C
v = \(\frac{πr^2h}{3}\)
D
v = 3πrh
medium Difficulty
Study Solution
Mathematics
WAEC / WASSCE 2022
Change of Subject of Formula
Solution
Make t the subject of k = \(m \sqrt \frac{t-p}{r}\)
A
\(\frac{k^2r + p}{m^2}\)
B
\(\frac{k^2r + pm^2}{m^2}\)
C
\(\frac{k^2r - p}{m^2}\)
D
\(\frac{k^2r + p^2}{m^2}\)
medium Difficulty
Study Solution
Mathematics
WAEC / WASSCE 2021
Change of Subject of Formula
Solution
make u the subject in x =\(\frac{2u-3}{3u + 2}\)
A
u = \(\frac{2x + 3}{3x - 2}\)
B
u = \(\frac{2x - 3}{3x - 2}\)
C
u = \(\frac{2x + 3}{2 - 3x}\)
D
u = \(\frac{2x + 3}{3x + 2}\)
medium Difficulty
Study Solution
Mathematics
WAEC / WASSCE 2021
Change of Subject of Formula
Solution
A solid brass cube is melted and recast as a solid cone of height h and base radius r. If the height of the cube is h, find r in terms of h.
A
r = h
B
r = √\(\frac{3h^2}{π}\)
C
r = πh
D
r = h √\(\frac{3}{h}\)
medium Difficulty
Study Solution