Solve the system of equations using substitution.
A. x = 0, y = ; x = 0, y = -
; x = 4, y =
or ,
,
B. x = 0, y = ; x = 4, y =
or ,
C. x = 5, y = 0; x = -5, y = 0; x = 3, y = 4
or (5, 0), (-5, 0), (3, 4)
D. x = -5, y = 0; x = 3, y = 4
or (-5, 0), (3, 4)
Answer: D
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A. Yes, at x = , x =
B. No
C. Yes, at x = , x =
D. Yes, at x =
Solve the system using Gaussian elimination.
A. {(6, 7, 9)} B. ? C. {(-6, 9, 12)} D. {(6, 9, 7)}
Solve.A 12-foot pole is supported by two wires that extend from the top of the pole to points that are each 5 feet from the base of the pole. Find the total length of the two wires.
A. 13 ft B. 26 ft C. 338 ft D. 34 ft
Consider the set of natural numbers and an operation
which means select the first of the two. That is,
?
?
Is
associative for
? Answer yes or no.
What will be an ideal response?