Answer:
Step-by-step explanation:
You have been asked to find the values in the function:
First, calculate A, called the amplitude, as half the value from peak to peak (from lowtide to high tide):
Then, calculate the vertical shift D as the average value between the high tide and lowtide:
Then, if P is the natural period of the tide, you can calculate B, or the frequency as:
Finally you need to find C or the phase shift thinking that for negative values, the function is shifted (displaced) to the right.
C=-6.75
The answer is B because the domain is the x value, and because the lines have arrows they continue forever, meaning that they contain all real numbers.
Answer:
C
Step-by-step explanation:
Since it ends in 5 it is an odd number.
Answer:
34
Step-by-step explanation:
Marcy got 15% of the 40 wrong
.15 *40
6
If she got 6 wrong, then she got the rest right
40-6 = 34
She got 34 right
Answer:
c > -7/8
Step-by-step explanation:
Add 2 for an inequality that compares to zero:
2x^2 -3x +(c+2) > 0
This will be true when the discriminant is negative. For the quadratic ...
ax^2 +bx +c
the discriminant is ...
b^ -4ac
We want this to be negative:
(-3)^2 -4(2)(c+2) < 0
9 -8(c +2) < 0
9 -8c -16 < 0
-7 < 8c
-7/8 < c
The given inequality will be true for all values of c greater than -7/8.
