Mya claims (m∠3 + m∠4) = m∠1 Which equations explain why Mya's claim must be true?

A:(m∠1 + m∠2) = 90° and (m∠3 + m∠4) = 90°
B:(m∠1 + m∠2) = 180° and (m∠3 + m∠4) = 180°
C:(m∠1 + m∠2) = 90° and (m∠3 + m∠4 + m∠2) = 90°
D:(m∠1 + m∠2) = 180° and (m∠3 + m∠4 + m∠2) = 180°

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

An airport in death valley is 60 feet below sea level, and an airplane is flying 2,000 feet above sea level. how many feet must the plane descend in order to land? a. 2060 b. 2000 feet c. 1940 feet d. 1880 feet e.1400 feet will mark as brainliest