I need the answer for all of these questions. Can anyone help me please ?

for 2 and so on

Step-by-step explanation:

for number 2= measure the angle with the protractor and thats the answer

for number 3= A

for number 4= add 41 and 82 then do 180- that number

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10

i am not sure :

step-by-step explanation: