Pls answer quickly Which statement best describes the relationship between the lengths of the sides of the triangle shown below?

A) r squared is equal to t squared minus s squared.

B) The square root of t is equal to r plus s.

C) s squared equals t squared plus r.

D) s plus t is equal to r squared.

2-digit numbers less than 91 which are 1 less than a multiple of 10

Which of the following would be a correct step in proving that triangle abc is congruent to triangle cda? a. use a protractor to measure the angles and show that all the corresponding angles are equal in measure. this will allow you to prove congruence by aaa. b. show that segment ab is parallel to segment cd and segment ad is parallel to segment cb. this will allow you to prove congruency by asa. c. show that is segment ab is perpendicular to segment ad. this will allow you to prove congruence by sas. d. none of the above.

7x^2-9x+5=0 find the discriminant and number of real solutions