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 Find the sum 3/10 + 5/100 + 8/1000 in decimal form ? 35.8 0.358 3.58 None of these 35.8 0.358 3.58 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/10 + 5/100 + 8/1000= 0.3 + 0.05 + 0.008 = 0.358
Fractions and Decimals What will be the vulgar fraction of 0.75 ? 1 1/4 2 3/4 1 1/4 2 3/4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.75 = 75/100 = 3/4
Fractions and Decimals 450.271 + 369.422 ÷ 0.03 - 108.612 x 2.001 = ? 13532 15532 14532 12532 13532 15532 14532 12532 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 450.271 + (369.422 ÷ 0.03) - (108.612 x 2.001)= 450 + 369/0.03 - (109 x 2) = 450 + 12300 - 218 = 12532
Fractions and Decimals (44.99)² - (15.01)² = ? 1500 1100 1800 700 1500 1100 1800 700 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP a² - b² = (a + b)(a - b)Hence, (44.99)² - (15.01)² = (44.99 + 15.01)(44.99 - 15.01)= 60 x 29.98 = 60 x 30 = 1800
Fractions and Decimals A person was asked to state his age in years. His reply was , "Take my age 3 years hence, multiply it by 3 and subtract 3 times my age 3 years ago and you will know how old I am." What was the age of 19 16 17 18 19 16 17 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the present age of person be x years.Then, 3(x + 3) - 3(x - 3 ) = x <=> (3x + 9) - (3x - 9) = x <=> x = 18
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