Solve the system by Gauss - Jordan elimination.
a. ( 6, 16, 30 )
b. ( 6, -16, 30 )
c. ( 6, 16, -30 )
d. ( -6, -16, -30 )
e. ( -6, 16, -30 )
a. ( 6, 16, 30 )
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Use the ac method to factor the trinomial, or state that the trinomial is prime.12x2 + 7x - 12
A. prime B. (3x + 4)(4x - 3) C. (3x - 4)(4x + 3) D. (12x + 4)(x - 3)
Find the larger number.-5.9 and -8
A. -8 B. -5.9
Solve the rational inequality. Express the solution using interval notation.
< 0
A. (-?, -6) B. (-?, -6) ? (5, ?) C. (-6, 5) D. (5, ?)
Solve the problem.Sandy manages a ceramics shop and uses a 
kiln to fire ceramic greenware. After turning off her kiln, she must wait until its temperature gauge reaches 
before opening it and removing the ceramic pieces. If room temperature is 
and the gauge reads 
in 11 minutes, how long must she wait before opening the kiln? Round your answer to
the nearest whole minute. A. 84 min B. 62 min C. 178 min D. 126 min