Given matrices A and B, find the indicated matrix if possible.A = 
, B = 
Find AB.
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.A polygon with n sides has D diagonals, where D is given by the function D(n) = 
. Find the number of sides n if 77 ? D ? 135.
A. The number of sides is between 13 and 19, inclusive. B. The number of sides is between 12 and 19, inclusive. C. The number of sides is between 14 and 18, inclusive. D. The number of sides is between 15 and 18, inclusive.
A satellite is circling 145 miles above the earth, as shown in the figure. When the satellite is directly above point B, angle A is found to be 74.8º. Use this information to find the radius of the earth. Apply the rules regarding the use of significant digits when determining your answers.
?
?
Earth's radius = __________ mi
Fill in the blank(s) with the appropriate word(s).
List all the elements of B that belong to the given set.B = {18, 
, -23, 0, 
, 
, 0.68, -8?, 0.999......}Rational numbers
A. 
B. 
C. 
D. 
Write the first six terms of the sequence beginning with the given term. Then calculate the first and second differences of the sequence. State whether the sequence has a linear model, a quadratic model, or neither. ? a0 = 1 an = an - 1 + n ?
A. 0, 1, 2, -4, 7, -11First differences: 1, 1, 2, 3, 4Second differences: -1, 1, -1, 1Neither B. 1, -2, 4, -7, 11, -16First differences: -1, 1, -1, 1Second differences: 1, 2, 3, 4, 5Neither C. 0, 1, 2, 4, 7, 11First differences: 1, 1, 2, 3, 4Second differences: -1, 1, -1, 1Linear D. 0, 1, 2, 4, 7, 11First differences: 1, 1, 2, 3, 4Second differences: -1, 1, -1, 1Quadratic E. 1, 2, 4, 7, 11, 16First differences: 1, 2, 3, 4, 5Second differences: 1, 1, 1, 1Quadratic