The equation has a solution r in the interval indicated. Approximate this solution correct to two decimal places.x4 - x3 - 7x2 + 5x + 10 = 0; 2 < r ? 3
Fill in the blank(s) with the appropriate word(s).
2.24
Mathematics
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Evaluate the requested trigonometric function using the information given. cos ? = 
; 0 < ? < ?/2Find sec ?.
A. 
B. 6
C. -6
D. 
Mathematics
Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Mathematics
Solve the problem.John's Office Supply paid $1903 for their monthly supply order in February. This total was down 13.5% from the amount they spent on their January order. What was the total amount of their January order?
A. $1646 B. $1741 C. $2200 D. $2160
Mathematics
Perform the indicated operations and express your answer in the form a + bi. 
A. 5i
B. -i
C. ±5
D. -5i
Mathematics