Let (m × n) denote a matrix of size m × n. Find the size of the following product, or state that the product is not defined.(4 × 4)(4 × 4)
A. 4 × 4
B. not defined
C. 4 × 8
D. 8 × 4
Answer: A
Mathematics
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A. 1
B. - 
C. -
D. 0
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Use the inverse trigonometric keys on a calculator to find the measure of angle A, rounded to the nearest whole degree.
A. 49° B. 51° C. 52° D. 50°
Mathematics
Round the number to the place indicated.Round to the nearest one: 24.5
A. 16 B. 24 C. 26 D. 25
Mathematics
Divide and simplify.
A. x2y2 - 3 - 9xy
B. xy - 3 - 
C. x2y2 - 3 - xy
D. x2y2 - 3 - 
Mathematics