Answer:
2 hours and 15 minutes
Step-by-step explanation:
60 minutes = 1 hour
120 minutes = 2 hours
so 135 minutes = 2 hours and 15 minutes
Remember the rules of Sohcahtoa (Sine, cosine, tangent). For this problem we take the cosine of 38 because the labeled sides are the adjacent leg and the hypotenuse.
Cos(38)=79/x
Cosine of 38 is about 0.7880
0.7880=79/x
Next we multiply both sides by the denominator
(x) 0.7880=79 (x)
Then divide.
<u>0.7880x</u>= <u>79</u>
0.7880 0.7880
X=100.25
Hope this helped :)
Answer:
6x+9
Step-by-step explanation:
Can you post a picture please!
Standard error (SE)

Or

Therefore, SE of the mean = (8)/(2) =4