Sally counts 7 stars. mike counts i more star than dally. how many stars do they count in all?

15stars

Step-by-step explanation:

sally = 7

mike = 7+1 =8

so...

7+8=15

Well Sally counted 7 stars. Mike Counted 1 more than Sally. 7+1=8 So if you do 8+7=15 thats total. But if you just want starts that they counted with out recounting it would be 8

Step-by-step explanation:

45

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.