QUESTÃO 18 Observe as igualdades:
1) 6 - (-1) = + 7
II) - 30 - (-1) = - 31
III) 40 - 50 = -(40 - 50)
IV)-7-(-7) = 0
Quantas delas são verdadeiras?
a) 0
b) 1
c) 2
d) 3
e) 4​

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Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x

There are 85 apples on the big tree, john picked out 15%. how many did john pick out?