ANSWER
EXPLANATION
The quadratic equation is:
Group variable terms:
Add the square of half, the coefficient of y to both sides.
The LHS us now a perfect square trinomial:
Take square root:
The first choice is correct.
In what I know of this problem and what you told me I think there is a 1/2 chance!
think about it, if the life span is 15 years old with standard deviation of 3 then that means we can have bats from 12~18 years old and the mean of the 50 numbers can be anything between that depending on the results we got. Then half of values in interval 12~18 is over 15 which gives it a 1/2 probability!
The answers that you put are right.
Good job!
Answer:
-8/3
Step-by-step explanation:
We know that lines that are perpendicular have slopes that multiply to -1
m1 * m2 = -1
We know one slope is 3/8 and are looking for the perpendicular slope m2
3/8 * m2 = -1
Multiply each side by 8/3 to find m2
3/8*8/3 *m2 = -1*8/3
m2 = -8/3
If we take 12450 to be the 100%, what is 622.50 off of it in percentage then? let's check.
