26 because when 2 meets 6 it forms the number aka # 26
Step-by-step explanation:
m∠RSU + m∠UST = 90° (as complementary angles)
(7x + 3)° + (11x − 21)° =90°
18x -18° = 90°
18x = 108°
x = 6
so, m∠RSU = (7x + 3)° = 7(6)+3 = 45°
and m∠UST = (11x − 21)° = 11(6) -21 = 45°
Sin80=h/15
(because h is opposite the angle of elevation and 15 is the hypotenuse)
h=15sin80=14.77
h=14.8 ft (rounded to the nearest tenth of a foot)
