Mathematics, 12.08.2021 04:50 latresyn
Cho hình chóp Sabcd có đáy abc là tam giác đều cạnh a. Cạnh bên Sa vuông góc với mặt đáy (ABC),góc giữa hai mặt phẳng (Sbc) và (abc) bằng 60 độ .Tìm thể tích V của khối chóp Sabc theo a
Answers: 2
Mathematics, 21.06.2019 13:30
In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w
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Mathematics, 21.06.2019 17:00
Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?
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Mathematics, 21.06.2019 22:00
White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.
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Mathematics, 21.06.2019 23:30
Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3
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Cho hình chóp Sabcd có đáy abc là tam giác đều cạnh a. Cạnh bên Sa vuông góc với mặt đáy (ABC),góc g...
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