\( \frac{2}{15} \)
\( \frac{3}{24} \)
\( \frac{3}{21} \)
\( \frac{3}{28} \)
Correct answer is B
No explanation has been provided for this answer.
Simplify \( [1 ÷ (x^2 + 3x + 2)] + [1 ÷ (x^2 + 5x + 6)] \)
\( \frac{2}{(x + 1)^2} \)
\( \frac{2}{(x + 1)(x + 2} \)
\( \frac{2}{(x + 1)(x + 2} \)
\( \frac{2}{(x + 1)(x + 3} \)
Correct answer is D
\( [1 ÷ (x^2 + 3x + 2)] + [1 ÷ (x^2 + 5x + 6)] \)
= \( 1 ÷ (x^2 + 3x + 2) + [1 ÷ (x^2 +5x + 6)]\)
= \( [1 ÷ ((x^2 + x) + (2x + 2) )] + [1 ÷ ((x^2 + 3x) + (2x + 6) )] \)
= [1 ÷ (x(x + 2) + 2(x +1))] + [1 ÷ (x(x + 3) +2(x + 3) )]
= [1 ÷ (x + 1)(x + 2)] + [1 ÷ ((x + 3) + (x + 2))]
=((x + 3) + (x + 1)) ÷ (x + 1)(x + 2)(x + 3)
Using the L.C.M
=((x + x + 3 + 1)) ÷ (x + 1)(x + 2)(x + 3)
=(2x+4)/(x+1)(x+2)(x+3) =2(x+2)/(x+1)(x+2)(x+3)
= \( \frac{2 }{(x + 1)(x + 3)} \)
Simplify (0.09)2 and give your answer correct to 4 significant figures
0.81
0.081
0.0081
8.0001
Correct answer is C
(0.09)2 = 0.09 × 0.09
= 0.0081
= 0.008100 to 4 significant figures
Please, start counting first from the non-zero digits i.e. 8
Find the simple interest on N325 in 5years at 3% per annum.
N48.75K
N50.10K
N75.50K
N15.75K
Correct answer is A
I =[ PRT ÷ 100]
[(325 × 5 × 3) ÷ (100)]
N(195 ÷ 4)
N48.75K
If A = (−3,5) and B = (4,−1) find the co-ordinate of the mid point
2, ½
½ , 2
1, ½
0, 2
Correct answer is B
The coordinate of the midpoint is \((\frac{-3 + 4}{2}, \frac{5 + (-1)}{2})\)
= \((\frac{1}{2}, 2)\)