Answer:
75% probability
Step-by-step explanation:
calculating the total ratio and percentage
D. 1/4
Explanation:
a perfect square is written in the form
(1)
In our problem, we have this perfect square:
(2)
with C being unknown. However, by comparing (1) and (2), we know that

So, we find

and therefore, the missing term must be

so the complete square is

The roots of x^{2} 6x-55=0 the answer is going to be
the roots is going to 3[1980/6}
x= 2.09284539
2x+3=17
subtract 3 from each side
2x+3 -3 = 17 -3
2x = 14
divide by 2 on each side
2x/2 = 14/2
x = 7