Solve.A building has a length 7 feet longer than its width, and its area is 980 square feet. Let x be the width of the building. Find a quadratic equation whose solution gives the width of the building, then solve this equation.
A. 56 ft
B. 21 ft
C. 35 ft
D. 28 ft
Answer: D
Mathematics
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Perform the matrix operation.Let C =
. Find 
C.
A. 
B. 
C. 
D. 
Mathematics
Write the mixed number as an improper fraction.-4
A. - 
B. - 
C. - 
D. - 
Mathematics
Perform the indicated operation.9
+ 7
+ 9
A. 1513
B. 9
C. 172
D. -1513
Mathematics
Solve the problem.A job pays a salary of 26,000 the first year. During the next 10 years, the salary increases by 4% each year. What is the salary for the 11th year? What is the total salary over the 11-year period? (Round to the nearest cent.)
A. $38,486.35; $350,645.14 B. $38,486.35; $312,158.79 C. $40,025.81; $312,183.79 D. $40,025.81; $390,670.94
Mathematics