Last week, Samantha ran 11 miles. This week, she ran 9
miles. How much more did she run last week?
A. 20
miles
B. 13
miles
C. 1
miles
D. 1
miles
Answer: D
Mathematics
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Identify the specified numbers.The rational numbers in the following list:1, 
, -12, 0, 
, 
, 0.78
A. 1, -12, 0, 
B. 
C. 1, -12, 0, 
, 
D. 1, -12, 0, 
, 
, 0.78
Mathematics
Multiply.-4x2(-2x4 - 5x2 - 4)
A. 8x6 - 5x2 - 4 B. 8x4 + 20x2 + 16 C. 8x6 + 20x4 + 16x2 D. 8x6 + 20x4
Mathematics
Simplify.
A. 6x B. 3x C. 6 D. 3
Mathematics
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(-6x2)-1
A. - 
B. - 
C. 
D. 
Mathematics