Add 15 to both sides
Y = -27 + 15
Y = -12
Your answer is A. Megan is correct. When two lines have different slopes, they must intersect, producing one solution.
The correct answer for this question is this one:
What type of association does the table show between weekend use of the park and gender?
no association
<u>a strong association</u>
a weak association
a moderate association
<span>
Week days Weekend
Male 50 10
Female 150 30
As shown in the table, there are more females on weekdays than on weekend, but more females go out than males.
</span>
cos (arctan (1))=
arctan (1) = 45 take it to the third quadrant = add 180 = 225
cos (225) = -1 / sqrt(2)
never leave a sqrt in the denominator
= -1 /sqrt(2) * sqrt(2)/sqrt(2)
= -sqrt(2)/2
sin (arccos (1/2)
arccos (1/2) = 60 take it to the 4th quadrant -60 degrees
sin (-60)
- sin 60
- sqrt(3)/2
