Answer:
50°
Step-by-step explanation:
65 + 65 +C = 180
130+C = 180
C = 180 - 130 = 50
Answer:
C
Step-by-step explanation:
Perpendicular lines have slopes which are the negative reciprocal of each other. To find the slope, convert 3x-5y=8 into y=mx+b form.
3x-5y=8
-5y = -3x +8
y = 3/5 x - 8/5
The slope is 3/5 so its perpendicular slope is -5/3. Write the equation of this line through the point (3,7) using point slope form. Then simplify into y=mx+b form.

M + 20 = 9
u need to subtract 20 from both sides because u want to isolate m
m + 20 = 9
m + 20 - 20 = 9 - 20
m = - 11
Answer:
y = -2/5x + 2
Step-by-step explanation:
<span>
Answer: 0.533</span>
Explanation: Note that
Let

=
z-score for I.

=
z-score for x.
The formula for z-score is given by

So,


Based on inequality in (1),
So,

Since

and

are z-scores and the level of nitrogen oxides are normally distributed, using normal distribution calculator (or table),
