If a_1=5a
1

=5 and a_n=a_{n-1}-1a
n

=a
n−1

−1 then find the value of a_4a
4

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test

Which of these angles are supplementary? a. 100o and 90o b. 78o and 102o c. 54o and 146o d. 12o and 78o