Two planes take off at the same time from an airport. The first plane is flying at 250 miles per hour on a bearing of 
. The second plane is flying in the direction 
at 275 miles per hour. If there are no wind currents blowing, how far apart are they
after 2 hours? Apply the rules regarding the use of significant digits when determining your answers.
?
__________ mi
?
What is the bearing of the second plane from the first after 2 hours?
?
__________ 
__________
__________
What will be an ideal response?
743; S; 87; W
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Determine whether the given ordered pair is a solution to the system.(9, 2)8x - 4y = 643y = 6x - 47
A. Yes B. No
Solve the problem. Round your answer to the nearest tenth, when appropriate. Use the formula 
, as needed.Find [H3O+] if the pH = 1.4.
A. 4.0 × 10-1 B. 2.5 × 10-2 C. 4.0 × 10-2 D. 2.5 × 10-1
Perform the indicated operation and simplify.
- 
A. 
B. 
C. 
D. 
Fill in the blank with one of the choices listed below. Some choices may be used more than once. 
To write fractions as decimals, divide the 
by the 
.
A. denominator; numerator B. numerator; denominator C. mean; median D. median; mean