Solve the problem.A line from the top of a cliff to the ground passes just over the top of a pole 5.0 ft high and meets the ground at a point 8.0 ft from the base of the pole. If the point is 79 ft from the base of the cliff, how high is the cliff? Round to the nearest unit.
A. 5 ft
B. 49 ft
C. 3160 ft
D. 395 ft
Answer: B
Mathematics
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A. 4 ft 4 in. B. 5 ft 9 in. C. 11 ft 4 in. D. 5 ft 4 in.
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Use a calculator to find the value of the expression rounded to two decimal places.cos-1 
A. 98.21 B. 1.71 C. -0.14 D. -8.21
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Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 
B. 9 - x2
C. 
D. 
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Write the expression with positive exponents, and simplify if possible.-3-4
A. 
B. 81
C. - 
D. -81
Mathematics