Fractions and Decimals (.125 + .027) / (.5 x .5 - 1.5 + .09) = ? 0.8 800 8 80 0.8 800 8 80 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given expression = [(0.5)³ + (0.3)³] / [(0.5)² - 0.5 x 0.3 + (0.3)²]= [a³ + b³] / [a² - ab + b²]=[(a + b)(a² - ab + b²)]/ [a² -ab + b²]= a+b = 0.5 + 0.3 = 0.8
Fractions and Decimals 0.002 * 0.5 = ? 0.001 1 0.01 0.1 0.001 1 0.01 0.1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2 * 5 = 10.Sum of decimal places = 4..002 * .5 = 0.0010 = 0.001
Fractions and Decimals Which of the following fractions is greater than 3 /4 and less than 5 / 6 ? 1/2 4/5 5/6 3/4 1/2 4/5 5/6 3/4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3 /4 = 0.75, 5/6 = 0.833,1/2 = .5,2/3 = 0.66, 4/5 = 0.8,9/10 = 0.9.clearly 0.8 lies between 0.75 and .833.4/5 lies between 3/4 and 5/6.
Fractions and Decimals If x/y = 0.3, then (2x - y)/(2x + y) = ? 0.5 0.15 0.5 0.25 0.5 0.15 0.5 0.25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x = 0.3y Then, (y - 2x)/(y + 2x)= y - 2(0.3y)/y + 2(0.3y)= y - 0.6y/y + 0.6y= 0.4y/1.6y= 0.4/1.6 = 0.25
Fractions and Decimals 3 / [ 3+ {(0.3 - 3.03) / (3 x 0.91)}] = ? 0.5 1.0 1.5 2.0 0.5 1.0 1.5 2.0 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given expression = 3 / [ 3+ {(0.3 - 3.03) / (3 x 0.91)}] = 3 / [3- { 273 / (3 x 91)}] = 3 / (3-1)= 3 / 2 = 1.5
Fractions and Decimals ( 0.5 x 0.5 x 0.5 x 0.6 x 0.6 x 0.6 ) / ( 0.5 x 0.5 - 0.3 + 0.6 x 0.6 ) = ? 11 111.1 1.1 11.1 11 111.1 1.1 11.1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given expression = [(0.5)³ + (0.6)³ ] / [(0.5)² - 0.5 x 0.6 + (0.6)²]= (a³+b³) / ( a²-ab+b²)= a + b= 0.5 + 0.6= 1.1
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