Solve by the quadratic formula. If there are no real roots, say so.x2 = 7 - 4x

A. -2 ± 
B. -2 ± 2
C. 2 + 
D. -1 ± 


Answer: A

Mathematics

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Use an amortization table to solve the problem. Round to the nearest cent.The monthly payments on a  loan at 13% annual interest are  How much of the first monthly payment will go toward the principal?

A. $914.11 B. $136.59 C. $1029.17 D. $21.53

Mathematics

Solve the problem.The sum of the measures of the angles of any triangle is 180°. In triangle ABC, angles A and B have the same measure, while the measure of angle C is 60° larger than each of A and B. What are the measures of the three angles?

A. A and B: 100°; C: 40° B. A and B: 50°; C: 80° C. A and C: 80°; B: 50° D. A and B: 40°; C: 100°

Mathematics

The terminal side of ? in standard position contains the given point. Find the values of the six trigonometric functions of ?.(12, -5)

A. sin ? = 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 
B. sin ? = - 
cos ? = 
tan ? = - 
csc ? = - 
sec ? = 
cot ? = - 
C. sin ? = - 
cos ? = 
tan ? = - 
csc ? = - 
sec ? = 
cot ? = - 
D. sin ? = - 
cos ? = 
tan ? = - 
csc ? = - 
sec ? = 
cot ? = - 

Mathematics

Write out the first three terms and the last term of the arithmetic sequence.

A. -5 + 25 - 75 + . . . - 1500 B. -5 - 10 - 15 - . . . - 300 C. -5 - 25 - 125 - . . . - 1500 D. -1 - 5 - 10 - . . . - 300

Mathematics