C
Mark brainliest please
Hope this helps you
In the standard form of the equation
![\\ \ f(t)=Acos[b(t\pm c)]+k\\ \\](https://tex.z-dn.net/?f=%20%5C%5C%20%5C%20f%28t%29%3DAcos%5Bb%28t%5Cpm%20c%29%5D%2Bk%5C%5C%20%5C%5C%20)
The middle line =k
For our given problem
f(t) = 40cos (80t + 20)
On comparison we get k=0
Hence middle line=0
Answer:
C
Step-by-step explanation:
Since it is only addition and subtraction, you can rearrange the order of the equations. This is what the three eqautions will look like after the arrangement:
1.6z + 8.3 z = ? (9.9z)
6.2y - 5.1y = ? (1.1y)
4.3x + 5.5x = ? (9.8x)
Then you just add and subtract.
Answer:
Pat a) The graph in the attached figure
Part b) 
The slope is 
The y-coordinate of the y-intercept is 
Step-by-step explanation:
Part a) Which line represents the linear equation
?
To graph the linear equation find the intercepts
we know that
The y-intercept is the value of y when the value of x is equal to zero
so
For x=0



The y-intercept is the point 
The x-intercept is the value of x when the value of y is equal to zero
so
For y=0



The x-intercept is the point 
Plot the intercepts to graph the linear equation
see the attached figure
Part b) Rewritten in slope-intercept form
we know that
The equation of the line into slope intercept form is equal to

where
m is the slope
b is the y-coordinate of the y-intercept
we have

convert to slope intercept form
isolate the variable y


The slope is 
The y-coordinate of the y-intercept is 
Answer: 10.5 minutes
Step-by-step explanation:
Given: Time taken to read each page of health book = 0.8 minutes
Time taken to take the test at the end = 5.5 minutes
Let x be the number of pages of book to read, then time taken to read pages and take the test is given by :-

If we read 6.25 pages, then time taken to read 6.25 pages and take the test is given by :-
