Word problems
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a boat has a speed of 5 mph in calm water. it takes the boat 3 hours to travel upstream but only 2 hours to travel the same
distance downstream. using the data in the table, what is the value of c, the speed of the current?
rate (mph)
time (hr)
distance (mi)
3(5-c)
2(5+c)
upstream
downstream
5-0
1 mph
2.5 mph
5 mph
7.5 mph
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answer:

uh what?

step-by-step explanation:

answer:

lol

step-by-step explanation:

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

step-by-step explanation: 4 cause 2+2=4