Question
For which range of 'p' does the expression 19p - 2p²-
35 have a positive value??Solution
ATQ: So, 19p - 2p²- 35 > 0 Or, 2p²- 19p + 35 < 0 Or, 2p²- 14p - 5p + 35 < 0 Or, 2p(p - 7) - 5(p - 7) < 0 Or, (2p - 5) (p - 7) < 0 So, p = 2.5 or p = 7 For any value of 'p' > 7, the value of expression 2p²- 19p + 35 becomes, positive. So, 'p' lies between 2.5 and 7.
? = ((64.13 - 34.97) + 16.89) x 1.98
(1096.01 ÷ 7.99) - (120.98 ÷ 10.88 X 6.99) = ? ÷ 4.99
(74.93% of 640.11 + 3/4 of 359.79)² - (1/3 of 80.87 × 2)² = ?
(12.13) 2 - 19.93 + 39.78 - 42.93 = ?
16.99% of 399.99 ÷ 17.17 = ? ÷ 15.15
(20.98 ÷ 2.91) + (15.12 – 5.96) = ?Â
{44.78% of (11.67 × 54.78)} ÷ 2.65 = ? + 19.25
63.95 – 21.12 – 24.89 + 6.04 = 3.98 × ? + 3.88
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
‘A’ and ‘B’ can build a wall in 8 days and 12 days, respectively. If ‘A’ started building the wall alone but after 4 days he was replaced by...