Solve the problem.A rug is to fit in a room so that a border of even width is left on all four sides. If the room is 18 feet by 20 feet and the area of the rug is 143 square feet, how wide will the border be?
A. 5.5 ft
B. 4.5 ft
C. 3.5 ft
D. 6 ft
Answer: C
Mathematics
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Find the limit, if it exists.
A. 3x2 + 3xh + h2 B. Does not exist C. 0 D. 3x2
Mathematics
Solve the problem.In a state with a population of 7,000,000 the average citizen spends $6,000 on housing each year. What is the total spent on housing for the state? Express answer in scientific notation.
A. $4.2 × 109 B. $42 × 1011 C. $42 × 1010 D. $4.2 × 1010
Mathematics
Evaluate the determinant.
A. ba - 24 B. -4a + 6b C. 4a - 6b D. 24 - ab
Mathematics
Use the formula A = P(1 + rt) to find the indicated quantity.A = $16,400; r = 10%; 90 days. Find P.
A. $16,810 B. $16,400 C. $16,000 D. $400.00
Mathematics