A boat goes 4 miles upstream in four hours. It returns downstream to the starting point in two hours .The rate of the boat is X.
1 answer:
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Answer:
The measure of the third angle is a 90 degrees
Step-by-step explanation:
Let
A and B ----> two complementary angles in a triangle
C ---> the measure of the third angle in a triangle
we know that
If two angles are complementary, then their sum is equal to 90 degrees
so
---> equation A
Remember that
The sum of the interior angles in any triangle must be equal to 180 degrees
so
----> equation B
substitute equation A in equation B
solve for C
subtract 90 degrees both sides
therefore
we have a right triangle
Answer:
Principal
Step-by-step explanation:
Given
Required
Determine what the given parameters describe
Literally, the principal amount is the starting amount of anything and as seen in the given parameters, the starting amount is the debt which amounts to $500
Taking the options one after the other;
We can conclude that the given parameters do not talk about Interest, Rate of interest and Time constraint;
Hence, D. Principal answers the question.
The given parameters do not relate to interest