The edge of a cube is 4 inches.
2 answers:
Answer:
Part 1)
Part 2)
Step-by-step explanation:
we know that
A cube has six equal square faces
A cross-section perpendicular to one face of the cube is equal to a square
see the attached figure to better understand the problem
Part 1) Find the area of the cross section
The area of the square is
where
b is the length side of the square
we have
substitute
Part 2) Find the perimeter of the cross section
The perimeter of the square is
where
b is the length side of the square
we have
substitute
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Answer:
The rate of change or slope m = -50
Step-by-step explanation:
The slope-intercept form of the line equation
where
- m is the rate of change or slope
- b is the y-intercept
Given that there is $500 in Holly's bank account.
Thus, the y-intercept b = 500
It is stated that she takes out $50 from her account each month but doesn't put money back in.
It means the rate of change or slope is decreasing.
Thus, the rate of change or slope m = -50
<u>EXTRA BONUS!</u>
We can also determine the line equation by substituting m = -50 and b = 500 in the slope-intercept form
y = -50x + 500
Here:
The slope m = -50
The y-intercept = 500