Answer:
<em>The product of an even number of negatives give us a positive number. An odd number of - 1's gives us a negative one, -1. This can be applied to any set of products. The product of an odd number of negatives give us a negative number. </em>
Step-by-step explanation:
A(n)=a+(n-1)d
A(40)= -1+(40-1)-4
A(40)= -1+39(-4)
A(40)= -1+(-156)
A(40)= -157
Answer:
i would say d.
Step-by-step explanation:
because depending on whether he is a competitor seller go's by the competition prices they might want to know how low is his cheapest shirt they might want to know which one is cheaper, and he would also keep track of his sales
72 boys.
Step-by-step explanation:
no. of boys (initial) : no. of girls : no. of boys (final)
3 : 2
3 : 2
______________________________________
9 : 6 : 4
9u - 4u = 5u = 30
5u = 30
1u = 30/5 = 8
9u (initial no. of boys) = 8×9
= 72