Name a pair of vertical angles (there may be more than one choice) <1 and <4
<1 and <2
<2 and <4
<2 and <5
<5 and <4

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Can any one me with the answers to these questions asap?