a rectangle ABCD is made up of three smaller rectangles with areas 18x square inches, 7x square inches, and 68 square inches, as shown in the diagram. Find the value of x. Find the dimensions of each of the three smaller rectangles.

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.

7,24

step-by-step explanation:

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21