If two secants are drawn from a point lying outside a circle, then the product of one secant on its outer part is equal to the product of the other secant on its outer part.
DE*CE = AE*BE
DE = CD + CE = 1 + x + 4 = x + 5
AE = AB + BE = 11 + x + 1 = x + 12
(x+5)(x+4)=(x+12)(x+1)
x² + 4x + 5x + 20 = x² + x + 12x + 12
9x + 20 = 13x + 12
20 - 12 = 13x - 9x
8 = 4x
x = 8/4
x = 2
Answer:
5 days
Step-by-step explanation:
This would have to do with average. So if one does it in 6 days and the other does it in 4 days, you would do the number between them. So 5 is between 4 and 6.
The more complicated way of thinking of it is like this...
add 6 and 4 6+4 that would = 10
Because we added two numbers, we have to divide by two.
10/2 which equals 5.
If it was numbers closer together like. 6 and 7 the middle numbeR would be 6.5 for example.
I hope this helped!!
Step-by-step explanation:
