Simplify: $(0.3 x - 0.2 y) (0.9 a - 0.02 b)$

0.27 a x - 0.003 b x - 0.18 a y + 0.004 b y

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0.27 a x - 0.006 b x - 0.15 a y + 0.004 b y

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0.27 a x - 0.006 b x - 0.18 a y + 0.004 b y

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0.27 a x - 0.006 b x - 0.18 a y + 0.003 b y

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Solution

The correct option is C $0.27 a x - 0.006 b x - 0.18 a y + 0.004 b y$
$(0.3 x - 0.2 y) (0.9 a - 0.02 b)$
$= 0.3 x (0.9 a - 0.02 b) - 0.2 y (0.9 a - 0.02 b)$
$= 0.27 a x - 0.006 x b - 0.18 a y + 0.004 y b$

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Similar questions

Simplify

(i) ${(\frac{3}{2} x - 0.45 y)}^{2}$

(ii) $(0.3 x - 0.2 y) (0.9 a - 0.02 b)$

(iii) $(0.3 a - 0.2 b) (0.09 a^{2} + 0.06 a b + 0.04 b^{2})$

(iv) ${(0.7)}^{3} + {(0.3)}^{3} + 3 \times 0.7 \times 0.3 (0.7 + 0.3)$

(v) ${(3.5)}^{3} - {(1.5)}^{3} - 3 \times 3.5 \times 1.5 (3.5 - 1.5)$

0.26x+0.09x=8-0.3x

0.3 x + 0.5 = 0.4 x - 0.2

, then

x

is equal to

Q. solve :

0.7 x + 0.3 x = 0.5 x + 6

Solve: $0.5 x - (0.8 - 0.2 x) = 0.2 - 0.3 x$

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Simplify: (0.3x−0.2y)(0.9a−0.02b)

The correct option is C 0.27ax−0.006bx−0.18ay+0.004by(0.3x−0.2y)(0.9a−0.02b)=0.3x(0.9a−0.02b)−0.2y(0.9a−0.02b)=0.27ax−0.006xb−0.18ay+0.004yb

Simplify: $(0.3 x - 0.2 y) (0.9 a - 0.02 b)$

The correct option is C $0.27 a x - 0.006 b x - 0.18 a y + 0.004 b y$
$(0.3 x - 0.2 y) (0.9 a - 0.02 b)$
$= 0.3 x (0.9 a - 0.02 b) - 0.2 y (0.9 a - 0.02 b)$
$= 0.27 a x - 0.006 x b - 0.18 a y + 0.004 y b$