Answer:
1
Step-by-step explanation:
We can use the slope formula
m = (y2-y1)/(x2-x1)
= (5-8)/(-8 - -5)
= -3/(-8+5)
= -3/-3
= 1
Answer
Find out the the rate of the boat in still water.
To proof
let us assume that the speed of the boat in the still water = u
let us assume that the speed of the current = v
Formula

As given
18 miles downstream for 3 hours
Now for the downstream

u + v = 6
now for the upstream
As given
the trip back against the current takes 6 hours

u-v = 3
Than the two equation becomes
u + v = 6 and u - v = 3
add both the above equation
we get
2u = 9
u = 4.5miles per hour
put this in the u - v = 3
4.5 -v = 3
v =1.5 miles per hour
The rate of the boat in the still water is 4.5miles per hour .
Hence proved
Answer: 44.44
Step-by-step explanation: Order of operations - PEMDAS (parentheses, exponents, multiplication, division, addition, subtraction)
Parentheses: (112-32) = 80
Multiplication: 5(80) = 400
Division:400/9 = 44.4444444444
Answer:
I believe the second one
Step-by-step explanation:
Because it's angles are all less than 90 degrees so it could be an acute triangle. I am sorry if it is wrong.