Answer:
9 mph
Step-by-step explanation:
-Let x be the speed of the boat upstream.
-Since the time upstream and downstream is equal, we will equate their time functions to solve for x:
-Speed upstream=x-8
-Speed downstream=x+8
#We then equate as follows:
Hence, the speed of the boat in still water is 9 mph
Answer:
can't help
Step-by-step explanation:
Answer:
3/4
Step-by-step explanation:
-2-(-5) divided into 6-2
-2 +5 divided into 4
3 divided into 4
4 less than 1/2 of x is 37 less than 2 of x
-4+(x/2)=-37+2x
add 37 to both sides
33+(x/2)=2x
times 2 both sides
66+x=4x
minus x both sides
66=3x
divide 3 both sides
22=x
There's lots of even functions, but two that come to mind are the absolute value function, IxI, and x^2. These are even because they are reflected over the y axis. Another way to find this is that (-x)^2 is equal to x^2 and so is I-xI, the algebraic method. Good luck!