Find the least common denominator for the equation.
A) 4
B) 80
C) 40
D) 8
E) 10
C) 40
Mathematics
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Remove parentheses and simplify the expression.-5.9(10r + 6) + 3.9(10r + 9)
A. -20r + 6 B. -94.4r C. -20r - 0.3 D. 4.1r + 0.1
Mathematics
Find the zeros of the function. Give exact answers.f(x) = x2 + 2x + 1
A. -1, -1 B. 1, 1 C. -1, 1 D. -3, -1
Mathematics
Solve the problem.A surveyor standing 70 meters from the base of a building measures the angle to the top of the building and finds it to be 35°. 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. 13.47 m B. 12.35 m C. 34.41 m D. 18.76 m
Mathematics
Evaluate the function at the given value of the independent variable and simplify.f(x) = 
;f(5)
A. 
B. 
C. 
D. 
Mathematics