I'm really sick I got Covad-19and I really need help with 15 questions assignment and I'm really tired can't do anything right now please give your insta so I can send the question and you can help me I don't have a lot of points that's why insta please I'm begging anyone smart in geometry god blesse You if you help

ratio is 2 : 9

the answer is three

13.5 : 3

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -