Answer:
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Step-by-step explanation:
I need help right now please
Given that Pythagorean Theorum is
A^2 + B^2 = C^2, you need to do the opposite.
To find for A^2, you need to:
Subtract B^2 from C^2. This creates the equation of:
C^2 - B^2 = A^2. This works because A^2 + B^2 is C^2, so the opposite must work.
Now if you're looking for A and not A^2, you need to subtract B^2 from C^2 and then square root the difference.
I hope this helps!
Perpendicular lines have opposite, reciprocal slopes.
For example, if one line had a slope of 4/5, then a perpendicular line would have a slope of -5/4.
The slope-intercept equation for a (non-vertical) line is:
y = mx + b
where m is a number representing the slope of the line and b is a number representing the y-intercept of the line.
We know already that m = -3/2 for our perpendicular line.
Also, our line will have the same x-intercept as the given line. We should probably find that point.
We can do that by setting y= 2/3x-6 equal to 0 and solving for x.
0 = 2/3x - 6
6 = 2/3x
6(3/2) = x = 9
The x-intercept is therefore at (x, y) = (9, 0).
Step 2. Determine "b" for our line. So far we have the equation:
y = -3/2x + b
We know this line goes through the point (x, y) = (9, 0). This means that when we plug in 9 for x in the equation of our line, we should get a value for y of 0.
0 = -3/2(9) + b
27/2 = b
Answer:
Step-by-step explanation:
To properly apply the substitution method, it will be better for us to rearrange the system of equations to have similar variables on the same side
We can simply evaluate equation 1 to have
y = -20
From the first equation alone, we can evaluate the value of y as -20. This is because only one unknown is present in equation one, hence a single equation is sufficient enough to evaluate it. If to unknowns were present, the two equations would have been utilized to evaluate the solution.
