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evaatavina
@evaatavina
September 2021
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Выбирая удобный порядок вычислений, найдите значение выражения:
а) 0,3*(-0,6)*(-0,7)*(-0,6)
б) 8*(-1/3)+7*(-1/3)
в) -2/11*0,8+0,3*(-2/11)
г) (-2/7-3/4)*(-28)
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математик2011
Б) =(-1/3)(8+7) = -1/3*15 = -5
в) = -2/11(0,3+0,8) = -2/11*1,1 = -2/11*11/10 = -1/5 = -0,2
г) = -2/7*(-28)-3/4*(-28) = 8+21 = 29
а) скорее всего так
0,3*(-0,6) - (-0,7)*(-0,6) =(-0,6)(0,3+0,7) = (-0,6)*1 = -0,6
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Answers & Comments
в) = -2/11(0,3+0,8) = -2/11*1,1 = -2/11*11/10 = -1/5 = -0,2
г) = -2/7*(-28)-3/4*(-28) = 8+21 = 29
а) скорее всего так
0,3*(-0,6) - (-0,7)*(-0,6) =(-0,6)(0,3+0,7) = (-0,6)*1 = -0,6