Find the probability.A die is rolled 20 times and the number of twos that come up is tallied. Find the probability of getting exactly four twos. Round to the nearest thousandth when necessary.
A. 0.075
B. 0.202
C. 0.083
D. 0.101
Answer: B
Mathematics
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Find the exact value of the expression.sin 20° cos 100° + cos 20° sin 100°
A. 
B. 
C. - 
D. - 
Mathematics
Add or subtract the rational numbers. Express the sum or difference as a rational number in lowest terms.- 
+ 
A. 
B. 
C. 
D. 
Mathematics
Evaluate the double integral
?
?
for the function 
and the region R.
?
and R is the rectangle defined by 
and 
.
?
A. 8
B. 6
C. 2
D. 3
E. 5
Mathematics
An object moving vertically is at the given heights at the specified times. Find the position equation 
for the object.
At t = 1 second, s = 284 feet
At t = 2 seconds, s = 221 feet
At t = 3 seconds, s = 126 feet
a. 
b. 
c. 
d. 
e. 
Mathematics