Use a formula to solve the problem.Find the area of a triangle with height 7 m and base 11 m.
A. 77 m2
B. 154 m2
C. 38.5 m2
D. 9 m2
Answer: C
Mathematics
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Solve the right triangle using the information given. Round answers to two decimal places, if necessary. 
a = 4, c = 8; Find b, A, and B.
A. b = 6.93 A = 30° B = 60° B. b = 8.94 A = 30° B = 60° C. b = 6.93 A = 60° B = 30° D. b = 8.94 A = 31° B = 59°
Mathematics
Find the product.(2xy - 9)(5xy + 4)
A. 10x2y2 - 37xy - 36 B. 10x2y2 - 37xy - 37 C. 7x2y2 - 37xy - 36 D. 7x2y2 - 37xy - 37
Mathematics
Estimate the percentage. ? 50% of 2,210 ?
A. 1,100 B. 5,525 C. 552.5 D. 221 E. 11,050
Mathematics
Find the key numbers of the expression.
?
?
A. -6, 7 B. 6, 7, 1 C. -6, -7 D. 6, 7 E. 6, -7
Mathematics