Answer:
? = 1 (assuming right-angled triangle)
Step-by-step explanation:
This is an application of Pythagoras' Theorem, but rearranged:
is, of course, 10, so 10 - 9 = 1, and 
.
a) residential plan cost more by $4
b) it costs the same at 14 HCF. If they use less than this, then residential plan costs less
To determine how many different types of shelves could be ordered, you will multiply all the numbers from each different aspect of the shelves to create all the possible combinations that could occur.
The reason for doing this has to do with the groupings that will occur using all three numbers.
4 x 3 x 6 = 72
There are 72 different possibilities of shelves.
First, we solve to find out what percent of the population has brown eyes and black hair. There are 303 people total, and 64 people with the description. After dividing, we find that about 21% of people have black hair and brown eyes.
Next, we use the chart to see that 9 out of the total 303 people have black hair and blue eyes. We divide this and see that this is only about 3%.
Last, we subtract 3 from 21 and get 18%
So, the answer is 18%
It’s figure B it’s the same as figure 1
