Simplify the expression. Assume that all variables are positive when they appear.(
+ 5)(
- 5)
A. 31
B. -19
C. 6 - 2
D. 1
Answer: B
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Solve the problem.It took three assembly-line workers 5.13 seconds, 6.489 seconds, and 5.6 seconds to assemble a product. How many seconds in all did they work?
A. 11.619 sec B. 10.73 sec C. 6.959 sec D. 17.219 sec
Solve the problem.A corporation's bank account has a balance of $5088. The following positive entries (deposits) and negative entries (withdrawals) are made to the account. 1327, -1815, -2040, 161, and 1907What is the ending balance?
A. $4628 B. $7455 C. -$4628 D. $5548
Solve the problem.Alex and Juana went on a 40-mile canoe trip with their class. On the first day they traveled 14 miles. What percent of the total distance did they canoe?
A. 3% B. 300% C. 35% D. 0.35%
Find the product.(3x + 12y)(5x + 8y)
A. 15x2 + 60xy + 96y2 B. 15x2 + 84xy + 84y2 C. 15x2 + 24xy + 96y2 D. 15x2 + 84xy + 96y2