Solve the problem.A ladder is resting against a wall. The top of the ladder touches the wall at a height of 9 ft. Find the length of the ladder if the length is 3 ft more than its distance from the wall.
A. 15 ft
B. 9 ft
C. 18 ft
D. 12 ft
Answer: A
Mathematics
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Determine whether the given number is approximate or exact.The blackboard in the mathematics classroom is 81 inches long.
A. Exact B. Approximate
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Find the unit tangent vector of the given curve.r(t) = (8 sin3 7t)i + (8 cos3 7t)j
A. T(t) = (sin 7t)i - (cos 7t)j B. T(t) = (8 cos 7t)i - (8 sin 7t)j C. T(t) = (8 sin 7t)i - (8 cos 7t)j D. T(t) = (168 sin 7t)i -(168 cos 7t)j
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Find the logarithm. Give an approximation to four decimal places.log 2.09
A. 0.2989 B. 0.7372 C. 0.3201 D. 0.3404
Mathematics
Rewrite the statement so the inequality symbol points in the opposite direction.0.855 < 0.885
A. 0.885 > 0.855 B. 0.855 > 0.885 C. 0.885 ? 0.855 D. 0.855 ? 0.885
Mathematics