Perform the division.
A. z2 - 5z + 25
B. z2 + 5z - 25
C. z2 + 10z + 25
D. z2 + 5z + 25
Answer: D
Mathematics
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Make the indicated conversion. 80.1 mi2 to km2
A. 30.9 km2 B. 207 km2 C. 50.1 km2 D. 128 km2
Mathematics
Find the area of the shaded region.
y = x2 - 2x
A. 
B. 
C. 2
D. 
Mathematics
Solve.The planets in a certain solar system have a path that is an ellipse, with Star A as one of the foci. Planet X has a perihelion of 588.6 million miles and an aphelion of 631.8 miles. Find an equation for Planet X's orbit. Express your answer with a and b in millions of miles, rounded to the nearest tenth of a million.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Estimate the value as a whole number or as a mixed numeral where the fractional part is 
.5
A. 5
B. 7
C. 6
D. 5
Mathematics