An exam consists of ten true-or-false questions. If a student guesses at every answer, what is the probability that he or she will answer exactly three questions correctly? Round your answer to the nearest thousandth, if necessary.
The probability is __________.
0.117
Mathematics
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Translate to an equation. Do not solve.What is 12.2% of 31?
A. n = 31% × 12.2 B. 12.2 = n × 31 C. n × 12.2% = 31 D. n = 12.2% × 31
Mathematics
Find the equation that the given graph represents.
A. f(x) = -x4 + x2 - 3x - 4 B. f(x) = 2x3 + x2 - 3x + 4 C. f(x) = -x3 - x - 4 D. f(x) = 2x4 - x2 + 4
Mathematics
Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.x5 x-2
A. -x3
B. x3
C. - 
D. 
Mathematics
Evaluate 
.
Fill in the blank(s) with the appropriate word(s).
Mathematics