Triple the sum of 7 and 8
2 answers:
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Answer:
3.9 mi/h
Step-by-step explanation:
If the boy is rowing perpendicular to the current, the two vectors form a right triangle.
AB represents the downstream current, BC is the speed across the river, and AC is the ground speed of the boat
AC^2 = 2.4^2 + 3.1^2 =5.76 + 9.61 = 15.37
AC = sqrt(15.37) = 3.9 mi/h
The boat's speed over the ground is 3.9 mi/h.
Answer:
Step-by-step explanation:
Given
Required
Plot a graph
First, we need to determine the minimum and maximum values of x and y
For x:
Minimum = 0
For maximum; Let y = 0
Solve for x
For y:
Minimum = 0
For maximum; Let x = 0
Solve for y
See Attachment for graph
