Express the number in scientific notation.0.0000000155011
A. 1.55011 x 10-7
B. 1.55011 x 10-8
C. 1.55011 x 108
D. 1.55011 x 10-9
Answer: B
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Solve for the requested variable without determining the constant of variation, k. Use the fact that if 
and 
then 
so that 
Assuming that y varies directly as the cube of x, and y = 10 when x = 16, find y when x = 40.
A. y = 
B. y = 
C. y = 4
D. y = 25
Solve the problem.List all the combinations of 4 objects 1, 2, 3, and 4 taken 3 at a time. What is C(4, 3)?
A. 123, 124, 134, 234, 321, 432 C(4, 3) = 6 B. 111, 112, 113, 114, 121, 122, 123, 124, 131, 132, 133, 134, 141, 142, 143, 144, 211, 212, 213, 214, 221, 222, 223, 224, 231, 232, 233, 234, 241, 242, 243, 244, 311, 312, 313, 314, 321, 322, 323, 324, 331, 332, 333, 334, 341, 342, 343, 344, 411, 412, 413, 414, 421, 422, 423, 424, 431, 432, 433, 434, 441, 442, 443, 444 C(4, 3) = 64 C. 123, 124, 132, 134, 142, 143, 213, 214, 231, 234, 241, 243, 312, 314, 321, 324, 341, 342, 412, 413, 421, 423, 431, 432 C(4, 3) = 24 D. 123, 124, 134, 234 C(4, 3) = 4
A wheel with radius r rotates at 13 rpm.
?
Find v if 
ft
?
If the answer needs rounding, round it to the whole number.
?
__________ ft/min
What will be an ideal response?
Subtract.87 - 54
A. 33 B. 25 C. 141 D. 43