Mathematics
Senior High
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No.
[黄チャート数学Ⅰ PRACTICE94]
Dat: 半径4m の円形の池の周りに,同じ幅の花壇を造りたい。 花壇の面積が9m²以上かつ
33m2以下になるようにするには, 花壇の幅をどのようにすればよいか。
93 (1)
5
-√5
- 3 = x <= -2°
(2) 2≦x≦4 (3) 解はない
94 短い方の辺の長さを1m以上3m以下
(1) a≤-4 (2) a>-4
95
m
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