A mortar shell is fired with a muzzle speed of 250 ft/sec. Find the angle of elevation of the mortar if the shell strikes a target located 1100 ft away. Round your answer to 2 decimal places.
a. 17.14°
b. 14.69°
c. 0.3°
d. 0.9°
a. 17.14°
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Evaluate the integral.
A. 5i + 
j + 6(1 + 
)k
B. 5i + 
j + 6(1 - 
)k
C. 5i + 
j + 6(1 - 
)k
D. 5i + 
j + 6(1 + 
)k
Find the area of the triangle. If necessary, round the answer to two decimal places. 
A. 2.42 B. 7.88 C. 0.35 D. 1.97
What is the fourth term in the binomial expansion of (a + b)10 ?
A. 120a7b3 B. 10a3b7 C. 210a3b7 D. 10a7b3 E. none of these
Consider the following situation. A political party holds a national convention with 1,100 delegates. At the convention, five persons (which we will call A, B, C, D, and E) have been nominated as the party's presidential candidate. After the speeches and hoopla, the delegates are asked to rank all five candidates according to his or her choice. However, before the vote, caucuses have narrowed the choices down to six different possibilities. The results of the first ballot are shown (choices, followed by the number of votes): (ADEBC) (BEDCA) (CBEDA) 380 220 200 (DCEBA) (EBDCA) (ECDBA) 180 80 40 ? Who would win in a runoff election using the principle of eliminating the candidate with the fewest first-place votes? ?
A. B B. C C. A D. E E. D