CMR: duong thang (d) : y=(m-2)x-3m+4 luon di qua mot diem co dinh
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11 tháng 4 2016
Diện tích toàn phần của khối nhựa hình lập phương là:
10 x 10 x 6 = 600 (cm2)
Cạnh khối gỗ hình lập phương là:
10 : 2 = 5 (cm)
Diện tích toàn phần của khối gỗ hình lập phương là:
5 x 5 x 6 = 150 (cm2)
Diện tích toàn phần của khối nhựa gấp diện tích toàn phần của khối gấp số lần là:
600 : 150 = 4 (lần)
19 tháng 11 2017
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gọi điểm coos định là A(a,b)
thay a,b vào ,,phá ra tách thành C.m=D => C=0=D => a=...,b=,....
thanks