Joelle set up the following proportion to solve for x. determine if her proportion is correct. if not, explain what is wrong with it.
a.
joelle’s proportion is correct.
b.
joelle’s proportion is not correct because bd, which is 4, corresponds proportionally to ba, which is 9, not 5.
c.
joelle’s proportion is not correct because de, which is 6, does not correspond proportionally to ac, which is x.
d.
joelle’s proportion is not correct because de, which is 6, corresponds proportionally to ba, which is x + 6, not x.

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.

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two

1260=3*6*7*10=3^2*2^2*7*5 perfect cude = 3^3*2^

step-by-step explanation:

y=20x

: )

hope this