Solve the problem.A surveyor standing 57 meters from the base of a building measures the angle to the top of the building and finds it to be 38°. The surveyor then measures the angle to the top of the radio tower on the building and finds that it is 50°. How tall is the radio tower?
A. 8.57 m
B. 23.4 m
C. 12.12 m
D. 8.28 m
Answer: B
Mathematics
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 42 ? 45
A. 262,144 B. 16,777,216 C. 16,384 D. 1,048,576
Mathematics
Use the compound-interest formula to find the account balance with the given conditions: P = principal, r = interest rate, t = time, in years.P = $2146.27, t = 11, r = 7% compounded monthly
A. $4625.08 B. $4517.58 C. $4604.67 D. $4574.80
Mathematics
Solve the equation.8x2 - 5x + 1 = 0
A. 
B. 
C. 
D. 
Mathematics
Solve.Let f(x) = 3x2 + 3x - 1. Find all x for which f(x) = 0.
A. 
B. 
C. 
D. 
Mathematics