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標題:
maths,please help me,thahks!
y/2+75度=2y *請問怎樣計算出y的值?(詳細列出步驟及解釋) x+35度+2x-5度=4x *請問怎樣計算出x的值?(詳細列出步驟及解釋)
最佳解答:
1. y/2 + 75° = 2y y/2 + 75° - y/2 = 2y – y/2…..等號兩邊 – y/2 75° = (3/2) y 2 * 75° = 2 * (3/2) y…..等號兩邊 * 2 150° = 3 y 150° / 3 = 3y / 3…..等號兩邊 ÷ 3 50° = y y = 50° 2. x + 35° + 2x - 5° = 4x 3x + 30° = 4x 3x + 30° - 3x = 4x – 3x…..等號兩邊 – 3x 30° = x x = 30°
其他解答:
maths,please help me,thahks!
- 2007年8月31日香港發生什麼大事--
- Graphs of Functions (20 marks) --- Urgent!!!!!!!!!!!!!!!!!!!
- 對元綠既印象, 意見.... (40分!!!)
- 2007年8月31日香港發生什麼大事--
- Graphs of Functions (20 marks) --- Urgent!!!!!!!!!!!!!!!!!!!
- 對元綠既印象, 意見.... (40分!!!)
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發問:y/2+75度=2y *請問怎樣計算出y的值?(詳細列出步驟及解釋) x+35度+2x-5度=4x *請問怎樣計算出x的值?(詳細列出步驟及解釋)
最佳解答:
1. y/2 + 75° = 2y y/2 + 75° - y/2 = 2y – y/2…..等號兩邊 – y/2 75° = (3/2) y 2 * 75° = 2 * (3/2) y…..等號兩邊 * 2 150° = 3 y 150° / 3 = 3y / 3…..等號兩邊 ÷ 3 50° = y y = 50° 2. x + 35° + 2x - 5° = 4x 3x + 30° = 4x 3x + 30° - 3x = 4x – 3x…..等號兩邊 – 3x 30° = x x = 30°
其他解答:
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