第一題：（7+6+5+4+3+2+1）*4=112
第二題：第三邊一定要小于兩邊的和,大于兩邊的差的絕對值
所以(x-2)+(x+2)>y
(x-2)-(x+2)
2道SAT數(shù)學題...
2道SAT數(shù)學題...
At a basketball tournament involving 8 teams,each team played 4 games with each of the other teams.How many games were played at this tournament?
The lengths of two sides of a triangle are (x-2)and (x+2),where x>2.Which of the following ranges includes all and only the possible values of the third side
A 4
At a basketball tournament involving 8 teams,each team played 4 games with each of the other teams.How many games were played at this tournament?
The lengths of two sides of a triangle are (x-2)and (x+2),where x>2.Which of the following ranges includes all and only the possible values of the third side
A 4
英語人氣：584 ℃時間：2020-05-10 04:50:49
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