Question

alguém poderia me ajuda pfvr ಥ_ಥ​

Answer 1

Resposta:

1.

a)15

b)-20

c)-32

d)42

e)24

f)-60

g)-36

h)105

2.

a)+ b)+

c)+ d)-

3.

a)5

b)-5

c)-5

d)8

e)-17

f)-7

g)-20

h)-75

Explicação:

1.

a) 5×3 = 15

b) 4×(-5) = -20

c) -8×4 = -32

d) -6×(-7) = 42

e) -2×4×3×(-1) = -8×3×(-1) = -24×(-1) = 24

f) -5×(-6)×(-2) = 30×(-2) = -60

g) 2×(-3)×6 = -6×6 = -36

h)-3×5×(-7) = -15×7 = -105

2.

a) (+)×(+)×(+)×(+) = (+)×(+)×(+) = (+)×(+) = +

b) (-)×(-)×(-)×(-) = (+)×(-)×(-) = (-)×(-) = +

c) (+)×(-)×(+)×(-) = (-)×(+)×(-) = (-)×(-) = +

d) (+)×(+)×(-)×(+)×(-)×)(-) = (+)×(-)×(+)×(-)×(-) = (-)×(+)×(-)×(-) = (-)×(-)×(-) = (+)×(-) = -

3.

a) 15÷3 = 5

b) 20÷(-4) = -5

c) -35÷7 = -5

d)-40÷(-5) = 8

e)51÷(-3) = -17

f)-77÷11 = -7

g)500÷(-25) = -20

h)-750÷10 = -75