<span>When you multiply numbers, two negative signs cancel each other out. Therefore if four of the numbers are negative the product is positive. If either one or three numbers are negative, the product is negative.
1.a negative, b positive, c positive, d positive
2.a positive, b negative, c positive, d positive
3.a positive, b positive, c negative, d positive
4.a positive, b positive, c positive, d negative
5.a positive, b negative, c negative, d negative
6.a negative, b positive, c negative, d negative
7.a negative, b negative, c positive, d negative
8.a negative, b negative, c negative, d positive</span>
Answer:
Step-by-step explanation:
We can multiply 4 on both sides and simplify:
Answer:
3 packages...
Step-by-step explanation:
So sorry if I didn't answer sooner, but you want to know what a prime number is right? I assume you now, but notice a small pattern, notice how most number 7's are prime right? 17, 27, 37 except for 11*7 of course. So 27 is one, then three is the same except 33. So try those out.