9t = 27.99
5t = ?
Cross-multiply : 9t? = 139.95t
?=15.55
Answer:
The slope is -3
Step-by-step explanation:
We can find the slope using
m = (y2-y1)/(x2-x1)
= (-5-1)/(4-2)
= -6/2
= -3
Answer:
I think humans live in these places.
Step-by-step explanation:
I think humans live in these places because they are man-made structures made for civilizations, for example the houses and roads.
Answer: 504
Step-by-step explanation:
When we select r things from n things in a order , we use permutations.
Formula for permutation: 
Given : The number of family members who are potential kidney donors. = 9
Number of people needed to be selected for best match, a second-best match, and a third-best match ( in an order)=3
Then, the number of possible orders are = 

Hence, the number of possible orders 504.