Solve the problem.A loaf of bread is removed from an oven at 
and cooled in a room whose temperature is 
. If the bread cools to 
in 20 minutes, how much longer will it take the bread to cool to 
A. 11 min
B. 30 min
C. 10 min
D. 21 min
Answer: C
Mathematics
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A. l, m, n and o B. m and o C. l and n D. Only m
Mathematics
Simplify.(9x8y4)2
A. 9x16y8 B. 81x16y8 C. 9x10y6 D. 18x8y4
Mathematics
Factor completely. If the polynomial is prime, state so.7r3 - 189
A. 7(r - 3)(r2 - 3r + 9) B. 7(r - 21)(r2 + 21r + 63) C. 7(r - 3)(r2 + 3r + 9) D. 7(r + 3)(r2 - 3r + 9)
Mathematics
Solve the inequality.x2 + 10x + 24 ? 0
A. x ? -4 B. x ? -6 C. x ? -6 or x ? -4 D. -6 ? x ? -4
Mathematics