It is given that rstu is a parallelogram, so ru∥st by the definition of parallelogram. therefore, ∠1≅∠2 by the alternate interior angles theorem, and m∠1=m∠2 by the . it is also given that ∠1 and ∠3 are complementary, so m∠1+m∠3=90° by the . by substitution, m∠2+ = 90°, and so ∠2 and are complementary by the definition of complementary.

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.

the answer is  

a.

28 ft2

step-by-step explanation: