標題:
inequalities
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發問:
Ivan and Tony have $x and $(x+50) respectively.it is known that half of amount with tony is at least $10 more than the amount with ivan, and the sum of the amounts with them is greater than $60.a)find the rang of the amount with ivan.b)find the rang of the amount with tony.the isosceles... 顯示更多 Ivan and Tony have $x and $(x+50) respectively.it is known that half of amount with tony is at least $10 more than the amount with ivan, and the sum of the amounts with them is greater than $60. a)find the rang of the amount with ivan. b)find the rang of the amount with tony. the isosceles triangleABC,where AB=AC and BC is the longest side.If AC=(x+4)cm and BC=18cm,find the range of values of x.
最佳解答:
1.Ivan and Tony have $x and $(x+50) respectively.it is known that half of amount with tony is at least $10 more than the amount with ivan, and the sum of the amounts with them is greater than $60. a)find the range of the amount with ivan. half of amount with tony is at least $10 more than the amount with ivan (x+50)/2>=10 +x 15>=x sum of the amounts with them is greater than $60. x + x+50>60 x>5 so 15>=x>5 b)find the range of the amount with tony. 15>=x>5 65>=(x+50)>55 2.the isosceles triangleABC,where AB=AC and BC is the longest side.If AC=(x+4)cm and BC=18cm,find the range of values of x. BC
其他解答:
wrong answer..............
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