672cm
1056cm
2112cm
4224cm
Correct answer is C
d = 42cm
Circumference = \(\pi d = \frac{22}{7} \times 42cm\)
= 22 x 6cm = 132cm
Total distance covered = circumference x number of revolutions
= 132cm x 16 = 2112cm
Factorize x2 - 2x - 3xy completely
(x - 2)(3x - y)
(x - 3y)(x - 2)
(x - 3y)(x - 3y)
(3x + y)(x - 2)
Correct answer is B
x2 - 2x - 3xy + 6y = x(x - 2) -3y(x - 2)
= (x - 3y)(x - 2)
If (2x + 3)3 = 125, find the value of x
1
2
3
4
Correct answer is A
(2x + 3 )2 = 125
2n + 3 = 3\(\sqrt{125}\)
2x + 3 = 5
2x = 5 - 3
x = \(\frac{2}{2}\)
= 1
If \(\frac{3}{2x} - \frac{2}{3x} = 4\), solve for x
\(\frac{4}{5}\)
\(\frac{4}{13}\)
\(\frac{5}{24}\)
\(\frac{13}{24}\)
Correct answer is C
\(\frac{3}{2x} - \frac{2}{3x} = 4\)
\(\frac{9 - 4}{6x}\); \(\frac{5}{6x}\) = 4
5 = 24x ; x = \(\frac{5}{24}\)
they are both empty
their union is an empty set
their intersection is an empty set
one of them is a subset of the other
Correct answer is C
No explanation has been provided for this answer.