Add.-9 + (-8)
A. -17
B. 17
C. 1
D. -1
Answer: A
Mathematics
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Perform the indicated operations.0.0089 × 0.016
A. 0.00000142 B. 0.001424 C. 0.00001424 D. 0.0001424
Mathematics
Solve the problem.On an architect's blueprint, 1 inch corresponds to 8 feet. Find the length of a wall represented by a line 
inches long on the blueprint. Round to the nearest tenth, if necessary.
A. 50 ft B. 8.8 ft C. 78.1 ft D. 12.8 ft
Mathematics
Identify the like terms in the expression:
Mathematics
Solve the problem.After being struck with a hammer, a gong vibrates 21 vibrations in the first second and in each second thereafter makes 
as many vibrations as in the previous second. Find how many vibrations the gong makes before it stops vibrating.
A. 28 vibrations B. 23 vibrations C. 94 vibrations D. 84 vibrations
Mathematics