question archive 1)A ball is shot into the air
1)A ball is shot into the air
Subject:MathPrice: Bought3
1)A ball is shot into the air. It's height , h in metres after t seconds is modeled by h=-4.9t2 + 30t +1.6. How long to 2 decimal places will it take the ball to reach a height of 35m?
2)The probability that three people will pass their driving tests are 0.3, 0.6 and 0.5 respectively. Find the probability that at least one of the three people will pass their driving test.
3)Percentage increase (decrease) in the price of the product in comparison with the original, if the price first decreased by 48%, and then increased by 58%?
