Multiply using the FOIL method.(x + 4)(x + 9)
A. x2 + 13x + 13
B. 2x + 36
C. 2x2 + 36
D. x2 + 13x + 36
Answer: D
Mathematics
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Convert the units.63.9 g = 
kg
A. 63,900 kg B. 0.00639 kg C. 0.0639 kg D. 6390 kg
Mathematics
Find the trigonometric function value of the corresponding complementary angle.Given that sec 18° ? 1.0515, find csc 72°.
A. 0.3090 B. 3.2361 C. 1.0515 D. 0.9511
Mathematics
Use the row reduction algorithm to transform the matrix into echelon form or reduced echelon form as indicated.Find the echelon form of the given matrix. 
A. 
B. 
C. 
D. 
Mathematics
Factor completely. If the polynomial is prime, say so.12wx - 3wy - 4xz + yz
A. (3w + z)(4x + y) B. (3 - z)(4wx - y) C. (3w - z)(4x - y) D. (3wz)(4x - y)
Mathematics