Answer:
1/2
Step-by-step explanation:
Answer:
a) Cosine function
b) amplitude=1
c) Period=π, b=2
d) y=0
e)
Step-by-step explanation:
a)Since the graph is symmetric with respect to the y-axis, it is a cosine function. This time the cosine function is reflected in the x-axis.
b) The graph ranges between -1 and 1, therefore we have the amplitude to be |-1|=|1|=1
c) The graph completes one full cycle within every π units. Therefore the time period is π. Also the value of b is 2, because the graph repeats twice on the interval [0,2π]
d) The midline divides the graph into two equal halves.
The midline has equation y=0.
e) The equation of this graph is of the for m,
where a=1 is the amplitude and b=2 is the frequency.
Therefore the equation is :
The 25% would take off $71.25, and the end cost of the keyboard would be $403.75! :)
Answer:
It's wrong. The correct answer is -3 1/8x + 6 3/10
Step-by-step explanation:
You don't need to do the first two numbers of each equation but you want to consider the last part of the equation since each of them is different. Convert 2 1/5 to 2 2/10 to make it easier. Because you are subtracting two negative numbers, they will actually add so 2 2/10 + 4 1/10 equals 6 3/10 which makes the second option applicable.
The coordinates of the fourth vertex is (9,7).
Explanation:
It is sort of like a pattern. (1,3), (9,3), (1,7), (9,7). Very simple once you think about it :)