Consider a soldier facing in a given direction (say north). Let us denote "left face" by l, "right face" by r, "about face" by a, and "stand fast" by f. (The element f means "don't move from your present position." It does not mean "return to your original position.") Then we define and an operation middle;" /> meaning "followed by". Thus,  means "left face" followed by "left face" and is the same as the single "about face". Does the set H and operation  satisfy the commutative property?
?
Answer yes or no.

What will be an ideal response?

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yes

Mathematics

Solve the problem.What will it cost to buy ceiling molding to go around a rectangular room with length 14 feet and width 11 feet? The molding costs $1.43 per linear foot.

A. $40.04 B. $31.46 C. $35.75 D. $71.50

Name the property illustrated by the statement.x ?  = 1

A. associative property of multiplication B. inverse property of multiplication C. identity property of multiplication D. distributive property

Graph the function.y = -3 cot (2x)

A.

B.

C.

D.

Find the slope and y-intercept of the line.-3x + 7y = 1

A. slope = ; y-intercept = 
B. slope = 3; y-intercept = 9
C. slope = ; y-intercept = - 
D. slope = ; y-intercept =