Please help me with Q6, Q7, and Q8 with their parts... please answer with proper working and everything should be right..would be appreciated a lot if u help. Chapter-Rational numbers and Integers.
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6) (a) (5^-1 ÷ 2^-1) = 1/5 ÷ 1/2 = 1/5 * 2 = 2/5
-(-3/8) = 3/8
By taking LCM, LCM = 2*2*2*5 = 40
2/5 = 2*8/5*8 = 16/40
3/8 = 3*5/8*5 = 15/40
16/40 is greater than 15/40.
Hence (5^-1 ÷ 2^-1) is greater than -(-3/8).
(b) 4/5 * 7/16 = 1/5 * 7/4 = 7/20
2/3 * 9/11 = 2 * 3/11 = 6/11
By taking LCM, LCM = 4*5*11 = 220
14/15 = 7*11/15*11 = 77/220
6/11 = 6*20/11*20 = 120/220
120/220 is greater than 77/220.
Hence 2/3 of 9/11 is greater than 4/5 of 7/6.
7) Nine-tenth of 100/99 = 9/10 * 100/99 = 10/11
Quarter of 8/11 = 1/4 * 8/11 = 2/11
After adding we get
10/11 + 2/11 = 12/11
Hence the answer is 12/11
Sorry, I don't know the answer of the 8th question.
Hope it helps.
Please mark this answer as brainliest.
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