Answer:
A. 111.65
Step-by-step explanation:
This scenario can be interpreted like a triangle ABC where A and B are islands and C is the point from where the captain is 160 miles from island B.
a = 160
b = 260
c = 250
Law of cosines
The internal angle is 68.35°
We have to find the external angle to find the bearing the captain should turn
Using the rule of supplimentary angles:
The external angle = 180 - 68.35 = 111.65°
Therefore, the captain should turn 111.65° so that he would be heading straight towards island B.
Hence, option 1 is correct ..
Answer:
The answer is "option C".
Step-by-step explanation:
Distinctions are also the mean squared variance just are calculated as the number of standard differences divided by "N" and for a population. After all, if a sample uses this very same definition.
- Its standard deviation would become partially skewed as well as the resulting community value becomes continuously underestimate.
- Its experimented formula consequently includes a correction modification for a bias. Its modification involves dividing by instead of n.
Answer:
x = -9, y = -3.
As an ordered pair it is (-9, -3).
Step-by-step explanation:
Substitute x = 3y in equation 1:
2y + 3y = -15
5y = -15
y = -15/5
y = -3.
Now find x by plugging y = -3 in x = 3y:
x = 3*-3 = -9.
Check the answer in equation 1:
2(-3) + -9
= -6 - 9
= -15 Correct.
Answer:
20 hours.
Step-by-step explanation.
The total distance traveled was 400 miles. Then I divided 400 by 20. I got 20.