Use a graphing calculator to find the matrix product and/or sum.Find AB + AC.A = 
B = 
C = 
A. 
B. 
C. 
D. Does not exist
Answer: C
Mathematics
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Find the angle between u and v in radians.u = 10i + 3j + 10k, v = 5i + 9j + 8k
A. 1.14 B. 0.98 C. 0.59 D. 1.50
Mathematics
Provide an appropriate response. Solve the system of equations using the addition method:x - 3y = 7 2x + 3y = 5
A.
(4, -1)
B.
(19, 4)
C.
(1, -2)
D.
Mathematics
Simplify by combining like terms.-9x2 + 9x3 + 3x - x2 + 7x - x3
A. 8x3 - 10x2 + 10x B. 8x3 - 10x2 + 3 x C. 9x3 - 9x2 + 10x D. 9x3 - 9x2 + 10x - x3 - x2
Mathematics
Solve the problem.If the legs of a right triangle have lengths 9 and 4, what is the length of the hypotenuse, that is, the longest side? Round your answer to the nearest tenth.
A. 8.1 B. 3.6 C. 9.8 D. 97.0
Mathematics