小說 發問時間: 社會與文化語言 · 1 0 年前

急英文的數學幫我解答我明天早上要考試謝謝

1.Three boys have marbles in the ratio fo 19:5:3 IF the boy with the least number has a marbles, how many marbles does the boy with the greatest number have ?

2.The area of a circle with radius r is equal to the area of a rectangle with base b .

Find the altitude of the rectangle in terms of r , b and π .

我要計算過程謝謝感謝感恩ㄛ

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不好意思我ㄉ選擇題答案沒這ㄍ數字ㄝ

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我也有點看不懂題目意思也可以幫我解答一下謝謝

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  • 1 0 年前
    最佳解答

    1.Three boys have marbles in the ratio fo 19:5:3 IF the boy with the least number has A marbles, how many marbles does the boy with the greatest number have ?

    三個男孩有一堆彈珠, 其比例為19 : 5 : 3

    如果彈珠數最少的男孩有A顆彈珠

    則彈珠數最多的男孩會有幾顆?

    答 :

    設最多者有B顆

    最少 : 最多 = 3 : 19 =A :B

    19*A = 3*B

    B=(19*A)/3顆

    2.The area of a circle with radius r is equal to the area of a rectangle with base b .

    Find the altitude of the rectangle in terms of r , b and π .

    一個半徑為 r 的圓其面積和一個底長為 b的長方型相同

    求長方型的高( 用 r , b 和π來表示)

    圓面積 = π*(r^2)

    設長方型高為 x

    π*(r^2) = b * x

    則高 x = (π*(r^2))/b

    參考資料:
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  • 1 0 年前

    圓週要者怎樣算.....忘了

    你還要計算過程喔..............我是數學白吃ㄝ

    1.Three boys have marbles in the ratio fo 19:5:3 IF the boy with the least number has a marbles, how many marbles does the boy with the greatest number have ?

    三個小鬼有一堆'彈珠'....比例為 19 - 5 - 3 .....如果有一個小果至少有一顆'彈珠'

    那麼...有最多'彈珠'的小鬼有幾顆

    簡單阿.....3 / 19 除不盡ㄚ........所以說...有最少彈珠的小鬼有3顆

    最多的19顆

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