Write interval notation.{ x ? x < -7 }
A. (-7, ?)
B. (-?, -7]
C. [-7, ?)
D. (-?, -7)
Answer: D
Mathematics
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Use a calculator to determine if the statement is true or false.9 | 781,731
A. True B. False
Mathematics
Round the number as requested.7,635 to the nearest thousand
A. 7,890 B. 9,000 C. 8,100 D. 8,000
Mathematics
Find the absolute value of the number.|-10|
A. 10 B. 20 C. 0 D. -10
Mathematics
When two resistors of resistances 
and 
are connected in parallel (see figure), the total resistance 
style="vertical-align:middle;" /> satisfies the equation
?
.
Find 
for a parallel circuit in which 
ohms and R must be at least 1 ohm.
?
A. 
B. 
C. 
D. 
E. 
Mathematics