標題:
urgent!!!! 中學數學題
發問:
1.Andy and Ben each shoots at a target. the probability that the target is hit by Andy and Ben are 0.42 and 0.36 respectively.( a) Find the probability that both of them hit the target.(b ) Find the probability that none of them hit the target.2. in the Figure, XY= 9cm , XZ =8 cm and 角YXZ=140度. fine the... 顯示更多 1.Andy and Ben each shoots at a target. the probability that the target is hit by Andy and Ben are 0.42 and 0.36 respectively. ( a) Find the probability that both of them hit the target. (b ) Find the probability that none of them hit the target. 2. in the Figure, XY= 9cm , XZ =8 cm and 角YXZ=140度. fine the area of 三角形XYZ. A.16cmニ次方 B.17cm二次方 C.23cm二次方 D.36cm二次方
1. a) 0.42x0.36=0.15 b) 0.58x0.64=0.37 2. the area = 1/2x8x9sin 140 =23cm the answer is C
其他解答:
urgent!!!! 中學數學題
發問:
1.Andy and Ben each shoots at a target. the probability that the target is hit by Andy and Ben are 0.42 and 0.36 respectively.( a) Find the probability that both of them hit the target.(b ) Find the probability that none of them hit the target.2. in the Figure, XY= 9cm , XZ =8 cm and 角YXZ=140度. fine the... 顯示更多 1.Andy and Ben each shoots at a target. the probability that the target is hit by Andy and Ben are 0.42 and 0.36 respectively. ( a) Find the probability that both of them hit the target. (b ) Find the probability that none of them hit the target. 2. in the Figure, XY= 9cm , XZ =8 cm and 角YXZ=140度. fine the area of 三角形XYZ. A.16cmニ次方 B.17cm二次方 C.23cm二次方 D.36cm二次方
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最佳解答:1. a) 0.42x0.36=0.15 b) 0.58x0.64=0.37 2. the area = 1/2x8x9sin 140 =23cm the answer is C
其他解答:
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