Find the area of a trapezoid with height 12 feet and bases 6 feet and 15 feet.
(a) 252ft²
(b) 33ft²
(c) 126ft²
(d) 66ft²
(d) 66ft²
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Estimate the probability of an event (empirical probability). You toss two fair coins 20 times and obtain the following results for the number of tails.
Estimate the probability that when the two coins are tossed exactly one will be tails.
A. 
B. 
C. 
D. 
Solve.A plot of land which is up for sale is advertised as being 25 acres. If there are 43,560 square feet in an acre, how many square feet does the plot of land cover?
A. 1,089,000 sq ft B. 43,585 sq ft C. 1,088,750 sq ft D. 1,089,500 sq ft
Find the missing factor.35x2 + 16xy - 12y2 = (5x - 2y)( )
A. 6x - 7y B. 6y - 7x C. 7x + 6y D. 7 + 6xy
Add or subtract by first simplifying each radical and then combining any like radical terms. Assume that all variables represent positive real numbers.
+ x
A. x2
+ 3x
B. 4x
C. 4
D. x(
+ 
)