The answer is D because when you insert it into a calculator it gives you D. Yet, if you do it manually you still get the same number .
Answer:

Step-by-step explanation:
Given the equation

comparing the equation with the slope-intercept form
Here,
so the slope of the line is 2/7
As we know that the slope of the perpendicular line is basically the negative reciprocal of the slope of the line, so
the slope of the perpendicular line will be: -7/2
Therefore, the point-slope form of the equation of the perpendicular line that goes through (4,-6) is:





Answer:
The 'n = 1' below sigma represents the <em>lower </em><em>bound</em><em>.</em> meaning the number from which you start adding.
'25' above sigma is the <em>upper </em><em>bound</em><em>.</em>
In general it means adding 42 from 1 to 25 times.
so 42(25).
Answer: C
Step-by-step explanation:I did the test.