Use the associative law of addition to write an equivalent expression.(r + st) + 4
A. (r + ts) + 4
B. (st + r) + 4
C. r + (st + 4)
D. 4 (r + st)
Answer: C
Mathematics
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Solve the problem.A force of magnitude 14 pounds pulling on a suitcase makes an angle of 60° with the ground. Express the force in terms of its i and j components.
A. 0.5000i + + 0.8660j B. 7.000i + 12.12 j C. -13.33i - 4.267j D. 12.12i + 7.000j
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Evaluate the integral.
dt
A. 5
B. 7 ln 5
C. 
- 
D. 35
Mathematics
A measurement of 2.8g plus a measurement of 3500mg = ? g
A. 6.300g B. 6.3g C. 3508.2g D. 6.30g
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Evaluate the integral by making a substitution and then using a table of integrals.
A. 
ln 
+ C
B. 
ln 
+ C
C. 
ln 
+ C
D. 
ln 
+ C
Mathematics