Give a1, a2, a3, ..., aN are arithmatic sequence. If a1 + a2 + a3 + ... + a20 = 13 and a1 - a2 + a3 - a4 +... + a19 - a20 = 17. Find the common ratio.

Will give brainliest b. describe the function over each part of its domain. state whether it is constant, increasing, or decreasing, and state the slope over each part.

Which linear function represents the line given by the point-slope equation y + 1 = –3(x – 5)?

The seventh-grade students at charleston middle school are choosing one girl and one boy for student council. their choices for girls are michaela (m), candice (c), and raven (r), and for boys, neil (n), barney (b), and ted (t). the sample space for the combined selection is represented in the table. complete the table and the sentence beneath it.