What are the solutions to the equation

Step-by-step explanation:

4) y²-1=48

y²=49

y=±7

option C -7 and 7

5) x²=289

x=±17

-17 and 17

Step-by-step explanation:

hello :

y²-1=48

y²-49=0

y²-7² =0

(y-7)(y+7)=0

y-7=0 or y+7 =0

y=7  or y = -7

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.