Solve.A large crater on the moon is approximately circular. The depth (in feet) of the crater below any point on a diameter can be modeled by the expression 
(x2 - 300x - 100,000), where x is the distance to the point on the diameter 1000 feet in from the edge. Write this expression in factored form.
A. 
(x - 20)(x + 100)
B. 
(x + 200)(x - 500)
C. 
(x - 200)(x + 500)
D. 
(x + 20)(x - 50)
Answer: B
Mathematics
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can be written as 
, is 
a rational number? Explain.
What will be an ideal response?
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Add. Do not use a number line except as a check.2.1 + (-6.6)
A. -8.7 B. -4.5 C. 4.5 D. 8.7
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Write the number as a product of a real number and i. Simplify the radical expression.
A. 3
B. -3
C. 3i
D. -3i
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Find the indicated matrix.Let A = 
. Find 3A.
A. 
B. 
C. 
D. 
Mathematics