Find the length of side a.
O A. 2
O B. 3
O c. 9
OD. 134
SUBMIT

Answer B is correct.

Step-by-step explanation:

a² + b² = c² |-b²

a² = c² - b²

a² = 5² - 4²

a² = 25 - 16

a² = 9

a = 3

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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.