Which of the following ordered pairs is a solution of x + y = 1?

(-2, 6)
(2, -6)
(-2, -6)

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?