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Writing Rational Numbers as Decimals

Value of: 2...

Question

Value of:
$\frac{2.5 \times 1.5}{3.2 \times 0.2}$

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Solution

$\frac{2.5 \times 1.5}{3.2 \times 0.2}$

$= \frac{3.75}{0.64}$

$= \frac{375}{64} = 5.86$ (approx.)

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Similar questions

Q. In the expression

2.5 + 0.05 - [1.6 - {3.2 - (3.2 + 2.1 \div x)}] = 0.65

, find the value of

x

.

	A	A	B	B	C	C	D	D	E	E
	M	S	M	S	M	S	M	S	M	S
$2006$	$2.8$	$1.3$	$3.3$	$2.2$	$2.6$	$1.7$	$3.0$	$2.2$	$1.9$	$1.4$
$2007$	$3.2$	$2.0$	$2.4$	$1.6$	$2.2$	$1.5$	$2.5$	$1.9$	$2.0$	$1.7$
$2008$	$1.9$	$0.9$	$2.9$	$1.6$	$2.1$	$1.0$	$2.3$	$1.5$	$1.6$	$1.1$
$2009$	$1.0$	$0.4$	$2.4$	$1.3$	$2.8$	$1.4$	$2.1$	$1.2$	$3.2$	$2.5$
$2010$	$2.5$	$1.5$	$2.3$	$1.2$	$2.6$	$2.1$	$1.8$	$1.1$	$3.1$	$2.6$

What is the total number of units manufactured by company C over all the years together?

Q. The probability distribution of a random variable

X

$X = x$	$- 1.5$	$- 0.5$	$0.5$	$1.5$	$2.5$
$P [X = X]$	$0.05$	$0.2$	$0.15$	$0.25$	$0.35$

The variance of

X

1.5, 4.5, x, 7.5

are in proportion then the value of the

x

Question 84 (vi)

Simplify

$(2.5 m + 1.5 q)^{2} + (2.5 m - 1.5 q)^{2}$

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