Answer: 1) B is correct, constant of variation is -2.
Step-by-step explanation:
1)
Direct variation states that a relationship between the two variables. we say y varies directly as x
i.e, or y =kx.................[1] ; where k is the constant of variation.
Given the equation:
Divide both sides by -4 we get;
Simplify:
.......[2]
On comparing equation [2] with [1] we get;
k = -2
You keep multiplying by 3. The recursion has nothing to do with 2. Thus, it is a_n=3*a_{n-1}
Answer:
You can tell by using the degrees of the angles and the lengths of the sides, congruent triangles will have the same angle measures and same side lengths where as similar triangles will have the same angle measures but different side lengths.
Step-by-step explanation:
600 is the answer...........
Answer: Choice C) 1/4
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Work Shown:
Let's rearrange terms a bit to say the following:
The last equation is in the form
where,
- |A| = amplitude
- B handles the period. Specifically T = 2pi/B, where T is the period
- C handles the phase shift, aka horizontal shifting
- D determines the midline and the vertical shifting
We only need to worry about the value of B.
In this case, B = 1/4
So,
The period is 8pi. Every 8pi units, a full cycle is completed.
However, we're not going from 0 to 8pi, but instead from 0 to 2pi.
The given interval is 2pi units wide. This is (2pi)/(8pi) = 1/4 of a full cycle. This is why choice C is the answer.