Question

HELP!!!!!
Without multiplying, determine the sign of the product

(-0.3)(-9.2)(8.1)(-4.2)(-0.8)

Answer 1

Count the number of the minus(-) sign. If that number is odd the sign of the product is negative, if it's even the product is positive.

Answer 2

OK Thanks!

Answer 3

Welcome, so what did you get ?

Answer 4

4

Answer 5

I meant for the sign :p

Answer 6

I don't know I am still a little confused

Answer 7

D you know what's an odd/even number is ?

Answer 8

Yes

Answer 9

Is 4 an even or odd number?

Answer 10

even

Answer 11

That's correct, so what would the sign of the product be from the definition above ?

Answer 12

Remember:
even number of (-) sign -> positive product
odd number of (-) sign -> negative product

Answer 13

OHHHHH OK I get it

Answer 14

what @math&ing001 said is that if there are odd number of negative signs in the expression, the answer would be negative but if there are even number of negative signs, answer would be positive because they would kind of cancel each other out. you know that -number * -number = +number.

Answer 15

OK

Answer 16

So could you give me the answer ?

Answer 17

Positive?

Answer 18

Yes :)

Answer 19

Thank you so much!

Answer 20

Glad I could help

Answer 21

\(\bf \color{red}{\text{Without multiplying}}\), determine the sign of the product

Answer 22

@jdoe0001 She did find the sign without multiplying.