Determine the size of matrix A and tell whether it is a square matrix, row matrix, column matrix, or none of these.A = [7]
A. 0 × 0; none of these
B. 0; square matrix
C. 1 × 1; square matrix
D. 1; none of these
Answer: C
Mathematics
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Solve.A parking area that is to be resurfaced is shaped like a trapezoid. The bases are 100 feet and 110 feet, and the height is 30 feet. What is the cost if the price of the resurfacing is $1.10 per square foot?
A. $3465.00 B. $6930.00 C. $12,100.00 D. $3150.00
Mathematics
Use a graphing calculator to make a conjecture as to whether each equation is an identity.cos 2x = 2cos2x - 1
A. Identity B. Not an Identity
Mathematics
Use special right triangles to evaluate the expression.tan 60°
A. 
B. 2
C. 
D. 
Mathematics
Multiply and simplify. Assume that all variables represent positive real numbers.(
+ 
)(
- 
)
A. 
+ 
- 
+ 3
B. 
+ 
+ 
+ 3
C. 
+ 
+ 
- 3
D. 
+ 
- 
- 3
Mathematics