Solve using Cramer's rule.-4x - 5y - 5z = -49 8x + 5y - 5z = -7 4x - 9y - 4z = -47
A. (2, 1, 6)
B. (3, 6, 3)
C. (1, -3, -6)
D. (1, 3, 6)
Answer: D
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The semiperimeter s of a triangle with sides of lengths a, b, and c is given bys = 
(a + b + c).
Answer the following statement true (T) or false (F)
Solve the problem.Super Sally, a truly amazing individual, picks up a rock and throws it as hard as she can. The table below displays the relationship between the rock's horizontal distance, d (in feet) from Sally and the initial speed with which she throws. 
Assume that the horizontal distance travelled varies linearly with the speed with which the rock is thrown. Using a graphing utility, find the line of best fit, and estimate, rounded to two decimal places, the horizontal distance of the rock if the initial speed is 33 ft/sec.
A. 26.67 feet B. 31.34 feet C. 31.33 feet D. 34.76 feet
Use the graph of f to draw the graph of its inverse function.
A. 
B. 
C. 
D. 
Write the augmented matrix for the system.
A. 
B. 
C. 
D. 