Find the sum or difference. Write the answer in lowest terms.
- 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve.Linda and Dave leave simultaneously from the same starting point biking in opposite directions. Linda bikes at 6 miles per hour and Dave bikes at 9 miles per hour. How long will it be until they are 30 miles apart from each other?
A. 
hr
B. 2 hr
C. 10 hr
D. 
hr
Mathematics
Round off a measurement of 5338L to three significant digits.
A. 53
0L
B. 5340L
C. 5330L
D. 534L
Mathematics
Find the term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form.x2 - 
x
A. 
; 
2
B. 
; 
2
C. 9; 
2
D. - 
x; 
2
Mathematics
Find the related angle for the given angle.510°
A. 45° B. 60° C. 30° D. 90°
Mathematics