Question

Which product is negative?
They're all positive and I keep on re doing it again

A.
–3 • (–2) • (–4) • (–7)

B.
–2 • (–7) • 12 • (4)

C.
4 • (–9) • (–3) • (–1)

D.
–6 • (–7) • (–8) • 0

Answer 1

@whpalmer4

Answer 2

I'll give a medal

Answer 3

When you multiply a negative by a negative it makes a positive.

Answer 4

I know

Answer 5

So if you multiply 4 negatives together you're going to get a positive number

Answer 6

@sicktwistd

Answer 7

C and D. The number of minus signs is odd.

Answer 8

For example: –3 • (–2) • (–4) • (–7) = 168
But if just one of those numbers is made positive the sum becomes negative.

Answer 9

B?

Answer 10

B is correct

Answer 11

thank you just making sure

Answer 12

can you explain?

Answer 13

It was C

Answer 14

yes, B is not correct because there are two negative signs, equivalent to \[(-1)*(-1)=1\]so B gives \[-2*(-7)*12*(4)=2*7*12*4=672\]

answer C is correct, because \[4*(-9)*(-3)*(-1)=-36*((-3)(-1))=-36*3=-108\]

odd number of negative signs in a multiplication means a negative result, unless the result is \(0\), as it is with D.

Answer 15

Why did you take away my medal? At least I tried and took out my time to help complete the answer. No-one is perfect and will always get the right answer but what you did was wrong and unfriendly. @HalloimEllie

Answer 16

medals are given to the most helpful answer, as judged by the person giving the medal. you provided no explanation, and your statement that B was correct was wrong. seems like pretty weak justification for awarding a medal, no?
@TIGGA281

Answer 17

@whpalmer4

On D I just counted the negative signs.
Thank you for evaluating the numeric results.