Solve. If necessary, round to the nearest tenth.If a tree 42.5 feet tall casts a shadow that is 17 feet long, find the height of a tree casting a shadow that is 7 feet long.
A. 32.5 ft
B. 2.8 ft
C. 17.5 ft
D. 103.2 ft
Answer: C
Mathematics
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Provide an appropriate response.Factor: y2 + 12y - 45
A. (y +- 9)(y - 5) B. (y + 3)(y +- 15) C. (y - 3)(y + 15) D. (y + 5)(y + 0)
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Multiply the polynomials using the special product formulas. Express the answer as a single polynomial in standard form.(x - y)2
A. x2 - xy + y2 B. x2 - y2 C. x2 - 2x2y2 + y2 D. x2 - 2xy + y2
Mathematics
Find zw or 
as specified. Leave your answer in polar form.z = 10(cos 30° + i sin 30°)w = 5(cos 10° + i sin 10°)Find 
.
A. 5(cos 3° + i sin 3°) B. 2(cos 20° + i sin 20°) C. 2(cos 3° + i sin 3°) D. 5(cos 20° + i sin 20°)
Mathematics
Find the decimal approximation for the radical. Round the answer to three decimal places if necessary.
A. 16.956 B. 6.6 C. 2.200 D. 4.118
Mathematics