Question

a)(-1).(-3/10)=???
b)(-4/7).(+5)=???
c)(-2/5).0=???
d)(-2/5).(-3)=???


alguem?

Answer 1

a ) _ $(-1) . ( -\frac{3}{10} ) = (-1 ) . ( - 0,3 ) = +0,3$

b ) _ $(-\frac{4}{7} ) . ( + 5) = (-0,5714285714285714) . ( + 5 ) = +2,857142857142857$

c ) _ $( - \frac{2}{5} ) . 0 = (-0,4) . 0 = 0$

d ) _ $(-\frac{2}{5} ) . ( -3) = (-0,4).(-3) = +1,2$