Use cosine law to solve the problem. See image attached.
What we're looking for is the length of side A (a side which is opposite with angle A).
This is the formula of cosine law
A² = B² + C² - 2BC cos A
Input the numbers
A² = 75² + 90² - 2(75)(90) cos 85°
A =
A =
Answer: Total minutes she brought her turtle out of this aquarium = 105 minutes
Explanation :
Since we have given that
Time for which Veronica brought her turtle out of its aquarium = 15 minutes
Number of days she did so = 7
Total time in a week she did so is given by
So , Total minutes she brought her turtle out of this aquarium = 105 minutes.
3 times as a whole or 4 as a whole with leftover water
For this expression,, the one and only step for solving is to factor out 4m² from the expression. This will look like the following:
4m² × (6 + m)
This means that the correct answer to this expression is 4m² × (6 + m).
Let me know if you have any further questions
:)
Answer : what they said
step by step