Answer:
a. 7.64 km/h
b. 6.0°
c. see below
Step-by-step explanation:
a) The total velocity of the boat is ...
7i +(0.6i +0.8j) = 7.6i +0.8j
The magnitude of this velocity is the speed of the boat, relative to land. That is given by the Pythagorean theorem.
|7.6i +0.8j| = √(7.6² +0.8²) = √58.4 ≈ 7.642 . . . . km/h
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b) The angle of the total velocity with respect to the "i" direction (the direction of vector v) is ...
α = arctan(0.8/7.6) ≈ 6.009°
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c) The boat is headed in a direction 6° different from its velocity relative to the water. That may need to be accounted for if the boat is traveling any significant distance.
Answer:
11a + 13c -b - 36
Step-by-step explanation:
We add all the sides together because we're looking for perimeter.
Answer:
Plug in 2.5 for y to figure out b
And then plug in 4.5 for x to figure out m
For .4 shade 4 squares, for .04 shade a bit less than half a square
Answer:
23+ .5 + .06
20+3+.56
10+10+ 3.56
Step-by-step explanation:
