Determine whether the lines given by the equations are parallel, perpendicular, or neither.
A. parallel
B. neither
C. perpendicular
Answer: C
Mathematics
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Multiply the following numbers:
a. (6a)(4a2b) b. (3x)(12xy2) c. (7abc)(2a2b-2c) d. (6x-1y)(2yz)(4xz)
Mathematics
Multiply and express the product in lowest terms.
? 
A. 
B. 
C. 
D. 
Mathematics
Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.cos 78°
A. -0.91 B. 0.21 C. 0.16 D. -0.86
Mathematics
Write the number in standard decimal form.4.28 × 104
A. 171.2 B. 42,800 C. 428,000 D. 4280
Mathematics