Evaluate using the correct order of operation.
÷ 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the problem.A = ?r2, where r is the radius, in centimeters. By approximately how much does the area of a circle decrease when the radius is decreased from 4.0 cm to 3.9 cm? (Use 3.14 for ?.)
A. 2.5 cm2 B. 1.3 cm2 C. 2.3 cm2 D. 2.7 cm2
Mathematics
Add. Write a mixed numeral for the answer.
A. 4
B. 5
C. 3
D. 5
Mathematics
Find u ? v.u = i + 2j, v = 6i - j
A. 8 B. 4 C. -4 D. 0
Mathematics
Use = or ? for ? to write a true sentence.
? 
A. ? B. =
Mathematics