Answer:2x+28 100% right
Step-by-step explanation:
Answer:
The negative outside the parentheses indicates that the vertex is a maximum
f(x) has a minimum vertex
g(x) has a maximum
Step-by-step explanation:
Answer:
Hello! Your answer is less than. (<)
Step-by-step explanation:
I took the test and got it right, proof below!!!!
Hope this helps!! so so sorry if im late! <3
Answer:
20 mph and 4 mph
Step-by-step explanation:
GIVEN: A boat travels upstream for
miles in
hours and returns in
hours traveling downstream in a river.
TO FIND: What is the rate of the boat in still water and the rate of the current.
SOLUTION:
Let the speed of boat in still water be
and speed of current be
.
speed of water in upstream 
speed of water in downstream 
As 


Solving both we get


Hence speed of boat in still water and rate of current is 20mph and 4mph respectively.