6.0cm
5.5cm
5.0cm
4.5cm
Correct answer is A
Volume of water in tank = l x b x h = 180 litres
but 1 litre = 1000cm2
250 x 120 x hw = 180 x 1000
hw = \(\frac{180 \times 1000}{250 \times 120}\)
= 6cm
Solve the inequality: 3(x + 1) \(\leq\) 5(x + 2) + 15
x \(\geq\) -14
x \(\leq\) - 14
x \(\geq\) -11
x \(\leq\) - 11
Correct answer is C
3(x + 1) \(\leq\) 5(x + 2) + 15
3x + 3 \(\leq\) 5x + 10 + 15
3x - 5x \(\leq\) 10 + 15 - 3
-2x \(\leq\) 22
x \(\geq\) \(\frac{-22}{2}\)
x \(\geq\) -11
Given that = {x: -2 < x \(\leq\) 9}, where x is an integer what is n(T)?
9
10
11
12
Correct answer is C
T = {-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
n(T) = 11
The sum of 6 and one-third of x is one more than twice x, find x
x = 7
x = 5
x = 3
x = 2
Correct answer is C
6 = \(\frac{1}{3}x\) = 1 + 2x
6 = 1 = \(\frac{2x}{1} - \frac{x}{3}\)
5 = \(\frac{6x - x}{3} = \frac{5x}{3}\)
5 = \(\frac{5x}{3}\)
3 x 5 = 5x
15 = 5x
x = \(\frac{15}{5}\)
= 3
5
6
8
10
Correct answer is A
P = {1, 2, 3, 4, 5, 6}; Q = {3, 4, 5, 6, 7, 8, 9}
P \(\cap\) Q) = {2, 3, 4, 5, 6}
n(P \(\cap\) Q) = 5