You can factor -80 as
So, we have
The square root of a product is the product of the square roots:
Since and , we have
Answer:
$180
Step-by-step explanation:
Since the discount is 40 percent and is also $72, We will cross multiply. 72 x 100 = 40 x what?
7200/40 = 180
The mirror was originally $180.
Answer:
p=2
Step-by-step explanation:
I found comman factors and then told you the awnser
The greatest number of groups would probably be 7 because:
21+7 = 28
28: 1, 2, 4, 7, 14
28/2 = 14
Half of 28 is 14 which means that each group will have 2 marbles. I am not sure if I'm correct, but I hope this helps! :)