The ? shape in the figure below is shown using 9 pixels in a 3 × 3 grid. The color levels are given to the right of the figure. Use the matrix 
that represents a digital photograph of the ? shape to solve the problem.
Adjust the contrast by changing the black to light grey and the light grey to black. Use matrix addition to accomplish this.
A. 
+ 
= 
B. 
+ 
= 
C. 
+ 
= 
D. 
+ 
= 
Answer: C
Mathematics
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Identify the type of argument and determine its validity with a Venn diagram.Premise: If you cut me, I bleed.Premise: I do not bleed.Conclusion: You did not cut me.
What will be an ideal response?
Mathematics
The water level in a tank rises 8 inches every minute. Write an equation of change that describes the height H, in inches, of the water at time t minutes. ?
A. 
B. 
C. 
D. 
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Solve using the elimination method. Use a graphing calculator to check your answer.
x - 
y = -18
x + 
y = -9
A. (0, 12) B. (0, -12) C. (-12, 0) D. (12, 0)
Mathematics
Find an equation for the ellipse described.Center at (0, 0); focus at (0, 3); vertex at (0, -6)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics