15 (a) To buy a Treasury bill (T-bill) that mat ures to
$10000 in e months, you must pay $9750. What
rate does this earn?
(b) If the bank charges a fee of S40 to buy a T-bill, what
is the actual interest rate you earn?​

Factor completely. x^8 - 1/81 a) (x^4 + 1/9)(x^2 + 1/3)(x^2 - 1/3) b) (x^4 - 1/9)(x^2 + 1/3)(x^2 - 1/3) c) (x^4 + 1/9)(x^2 - 1/3)2

Which of the following statements is not true? a.parallel lines are lines in the same plane that never intersect. b.congruent figures have the same shape and same size angles and sides. c.similar figures must have the same shape and the same size. d.a rotation is when you turn a figure around a certain point.

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