Solve the system of equations by the substitution method. Check your solutions. For any dependent equations, write your answer in the ordered pair form.
A. {(0, 1)}
B. {(1, 1)}
C. {(0, 0)}
D. {(1, 0)}
Answer: A
Mathematics
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Use sum-to-product identities to rewrite the expression as a product.sin 7x - sin 3x
A. 2 sin 2x B. 2 sin 5x cos 2x C. 2 sin 2x cos 5x D. 2 cos 3x cos 5x
Mathematics
Determine the area or volume as indicated. Use 3.14 for ? when necessary.
Find the volume.
A. 439.6 ft3 B. 3077.2 ft3 C. 769.3 ft3 D. 219.8 ft3
Mathematics
Find the square.
2
A. 4x2 + 
xy + 
y2
B. 4x2 + 
y2
C. 2x2 + 
xy + 
y2
D. 4x2 + 
xy+ 
y2
Mathematics
State if the vectors a and b are perpendicular, parallel, or neither. If a and b are parallel, state whether they point in the same direction or in opposite directions.a = 
, b = 
A. Perpendicular B. Parallel, opposite directions C. Parallel, same direction D. Neither
Mathematics