The vertex is when x=-b/2a
in this case, b=-8, a=-1, so x=-(-8)/2(-1)=-4
when x=-4, y=-(-4)²-8(-4)+2=18
so the answer is B.
Answer:
1. -2+2x=y
Step-by-step explanation:
You only need to try the first two lines of the table to determine which equation works.
Only equations 1 and 4 work for the first line of the table (x=0).
- 1. -2 +2·0 = -2 . . . . . . . this works
- 2. 2 -2·0 = 2 ≠ -2
- 3. 2 +2·0 = 2 ≠ -2
- 4. -2 +0 = -2 . . . . . . . this works
Of those, only equation 1 works for the second line of the table (x=1).
- 1. -2 +2·1 = 0 . . . . . . . this works
- 4. -2 +1 = -1 ≠ 0
The equation that is true for the table values is ...
-2 +2x = y
Answer:
c. The odds of getting a disease in the exposed versus the odds of getting the disease in the non-exposed
Step-by-step explanation:
Odds ratio (OR) is statistic which quantifies strength of association between the two events, say, A and B.
Odds ratio may be defined as ratio of odds of A in presence of B and odds of A in absence of B, or vice versa.
If the two events are independent, the OR becomes equal to 1.
If OR is greater than 1, then A and B are positively correlated and compared to the absence of B, the presence of B raises the odds of A or vice versa.
If OR is less than 1, it means that A and B are correlated negatively, and presence of the one event reduces odds of other event.
<u>The best state is shown by C. So, C is the answer where A is the event of getting the disease and B is some exposure to something.</u>