Add. Write the answer in lowest terms as a mixed number.
A. 42
B. 41
C. 41
D. 40
Answer: B
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Provide an appropriate response.
A V-slot forms a triangle whose angle at the vertex is 60°. The depth of the slot is 24 mm. Find the width of the V-slot. 
A. 12 mm B. 24 mm C. 13.9 mm D. 27.7 mm
Perform the addition visually using symbols.-9 + (-10)
A. 19 B. -1 C. 1 D. -19
Factor completely.5x8 - 1280
A. (5x4 + 80)(x2+ 4)(x + 2)(x - 2) B. 5(x4 + 16)(x2+ 4)(x + 2)(x - 2) C. 5(x4 - 16)2 D. 5(x4 + 16)(x4 - 16)
Solve.The loudness, D, in decibels of a sound of intensity I is given by D = 10 log (I/I0), where I is measured in watt/m2 and I0 = 10-12 watt/m2. What is the decibel level of a noise whose intensity is 6.19 x 10-4 watt/m2? (Round to the nearest whole number.)
A. 9 decibels B. 202 decibels C. 88 decibels D. 78 decibels