Solve.A case of candy bars has 3 layers of candy bars. In each layer are 6 rows with 15 candy bars in each row. Find how many candy bars are in a case.
A. 269 candy bars
B. 260 candy bars
C. 270 candy bars
D. 280 candy bars
Answer: C
Mathematics
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Find the length of the missing side in the right triangle.
a = 16, c = 34; find b
A. 2
B. 1,156
C. 1,412
D. 30
Mathematics
Graph the system of inequalities, and find the coordinates of the vertices.x - 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 
Mathematics
Use the formulas for measuring sounds to find the missing value. 
The intensity I of a sound is given. Find the loudness L of the sound.I = 10-11 W/m2
A. L = 230 dB B. L = 30 dB C. L = 10 dB D. L = 20 dB
Mathematics
Solve the problem.The temperature at the South pole was -20° at 8 am. At 3 pm, it was 42°. By how many degrees did the temperature rise?
A. by 22° B. by -62° C. by -22° D. by 62°
Mathematics