Convert the units using unit fractions.42,240 ft = 
mi
A. 211.2
B. 8
C. 8.5
D. 9
Answer: B
Mathematics
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Write the expression in standard form.7.0686 × 10-7
A. 0.00000070686 B. -70,686,000 C. 0.000000070686 D. 0.0000070686
Mathematics
Find the exact value of the expression using a sum or difference identity.tan (-165°)
A. -2 + 
B. 
C. 
D. 2 - 
Mathematics
Add or subtract as indicated.
- 
A. 
B. 
C. 0
D. 6x
Mathematics
An airplane is approaching Los Angeles International Airport at an altitude of 5,280 feet. If the horizontal distance from the plane to the runway is 2.4 miles, use the Pythagorean Theorem to find the diagonal distance from the plane to the runway (see the figure below). (5,280 feet equals 1 mile.)
?
?
?a = 2.4 miles, b = 5,280 feet
?
__________ miles
Fill in the blank(s) with the appropriate word(s).
Mathematics