Find the distance between each pair of (4.5, -3.3) and (4.5, 5.5

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°

Ana earns 2.5% simple interest on $2,000 in her savings account. she does not make any deposits or withdrawals. after 3 years, how much interest will ana have earned on her savings account?