Find the volume of the indicated region.the tetrahedron cut off from the first octant by the plane 
A. 18
B. 27
C. 54
D. 36
Answer: A
Mathematics
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Solve the problem.Anne writes one page in 
of an hour. How many pages can she write in 4
hours?
A. 6 page(s) B. 8 page(s) C. 4 page(s) D. 2 page(s)
Mathematics
Write the number in scientific notation.0.000391
A. 39.1 × 10-5 B. 3.91 × 10-4 C. 3.91 × 10-3 D. 3.91 × 10-5
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Solve the equation.Solve tan ? = 
for ?, where 0° ? ? ? 90°.
A. 60° B. 90° C. 30° D. 45°
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For the pair of similar triangles, find the length of the indicated side.
?
In the left triangle, the hypotenuse has length 10, and the longer leg has length 8. In the right triangle, the hypotenuse has length 5, the longer leg has length 4, and the shorter leg has length 3. Find the length, x, of the shorter leg of the left triangle.
A. x = 4 B. x = 6 C. x = 3 D. x = 9
Mathematics