I would say this study is observational-- if it was experimental, they would be doing something with the eels (like feeding them peanut butter to see if it makes them faster, or something like that). I would choose <em>"Observational study, because the divers are not catching eels for a sample."</em>
This expression can't be simplified any further be as there is no common factor for the numerator and the denominator.
Answer: The Answer is A
Step-by-step explanation:
1)
now, let's take a peek at your Unit Circle, as you should have one, if you don't, this is a prime time to get one, you'll need it, you can find many online, or I can post one here for you, many good ones. Anyhow, let's take a peek at π/6.
now, the tangent function is positive, if both the numerator and denominator have the same sign, that happens in the I Quadrant, as in π/6, but is also true in the III Quadrant, since both are negative.
2)
Answer:
Step-by-step explanation:
Well.. First of all, the question says that we are working with a rectangle..
So, the rectangle has a length and width. I'll call them L and w.
Look at this phrase: " length that is one foot less than twice its width"
it means, in a algebraic language: L = 2w - 1
Let's analysis the next phrase: "it the area of the rectangle is 91 square feet"
So, A = 91 ft²
But you have to remember that the rectangle area is a product of L and w.
L x w = 91
They are the following equations that you could be used to solve the system of equations.
Now, you have a system of equations and I suggest you to solve it using the substituition method.
L = 2w - 1
L x w = 91