A pencil holder contains 8 pens. Two of the pens don't write. If two pens are selected at random, what is the probability both don't write?
What will be an ideal response?
Mathematics
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How many words are memorized in 15 minutes? (Round answer to the nearest whole number.)
In a certain memory experiment, the rate of memorizing is given by:
where M (t ) is the number of Spanish words memorized in t minutes. The subject has no Spanish words memorized at the beginning of the experiment.
Mathematics
Given the function, find the indicated value.f(x) = x2 - 2x - 4; f(4)
A. 28 B. 12 C. 20 D. 4
Mathematics
Let 
. Find the composite function.
?
What will be an ideal response?
Mathematics
Write the decimal number that has the specified place values.5 tenths, 8 thousands, 1 hundred, 7 ones, 6 tens, 5 hundredths
A. 8,167.55 B. 8,567.51 C. 8,557.61 D. 816.755
Mathematics