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:
a) 1. Equivalent expression
b) 3. (wx)yz
c) 2. wx(yz)
Step-by-step explanation:
1. According to the associative property, the result of the addition or the multiplication of three or more numbers are the same irrespective of the order of the grouping of the numbers.
(a + b) + c = a + (b + c)
That is the result of the equation is not affected by the rearrangement of the parenthesis to group the numbers
In the given question
w(xy)z = (wx)yz
w(xy)z = wx(yz).