Search SchoolNGR

Mathematics Past Questions and Answers

Classroom

Mathematics Questions

Question 726:

If 0.0000152 x 0.042 = A x 10⁸, where 1 \(\leq\) A < 10, find A and B

SchoolNGR Classroom

A A = 9, B = 6.38
B A = 6.38, B = -9
C A = -6.38, B = -9
D A = -9, B = -6.38

View Answer & Explanation

Question 727:

If (x + 2) and (x - 1) are factors of the expression \(Lx^{3} + 2kx^{2} + 24\), find the values of L and k.

SchoolNGR Classroom

A 1 = -6, k = -9
B 1 = -2, k = 1
C K = -1, 1 = -2
D 1 = 0, k = 1
E K = 0,1 = 6

View Answer & Explanation

Question 728:

Make T the subject of the equation \(\frac{av}{1 - v}\) = \(\sqrt{\frac{2v + T}{a + 2T}}\)

SchoolNGR Classroom

A T = \(\frac{3av}{1 - v}\)
B T = \(\frac{1 + v}{2a^2v^3}\)
C T = \(\frac{2v(1 - v)^3 - a^4v^3}{2a^3v^3 + (1 - v)^2}\)
D \(\frac{2v(1 - v)^3 - a^4 v^3}{2a^3v^ 3 - (1 - v)^3}\)

View Answer & Explanation

Question 729:

The value of (0.03)3 - (0.02)3 is

SchoolNGR Classroom

A 0.019
B 0.0019
C 0.00019
D 0.000019
E 0.000035

View Answer & Explanation

Question 730:

y varies partly as the square of x and partly as the inverse of the square root of x.Write down the expression for y if y = 2 when x = 1 and y = 6 when x = 4

SchoolNGR Classroom

A Y = \(\frac{10x^2}{31} + \frac{52}{31\sqrt{x}}\)
B Y = x² + \(\frac{1}{\sqrt{x}}\)
C Y = x² + \(\frac{1}{x}\)
D Y = \(\frac{x^2}{31} + \frac{1}{31\sqrt{x}}\)

View Answer & Explanation

Stay Updated

Follow us on:

Subjects