Solve.
= 
A. No solution
B. - 
C. 
D. 
Answer: D
Mathematics
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Perform the indicated operation and express with the proper accuracy and precision. The first number given is approximate and the second number is exact. (Use calculator if needed).0.3073 + 19.7
A. 20.0073 B. 20 C. 20.01 D. 20.0
Mathematics
Use the quadratic formula to solve the given equation.
x2 + 
x - 
= 0
A. ± 
B. 
C. 
D. 
Mathematics
Solve the problem.A church steeple casts a shadow 105 ft long, and at the same time a 9.0-ft post casts a shadow 5.0 ft long. How high is the steeple? Round to the nearest unit.
A. 58 ft B. 189 ft C. 9 ft D. 124 ft
Mathematics
Find the sum.42 + (-13)
A. -55 B. -29 C. 55 D. 29
Mathematics