I need help with these questions asap, I will post pictures if you know them all answer them in the order of the photos from 1-5 thank you.

1. step 4

2.idk

3. step 2

4.-5n = 1 >  n= -1/5

n + 15 = -10 > -25

n/5 = -1/5 > n = -1

n - 13 = -12 > n = 1

5. cant see the drop down menu or possible answers

but if an answer is the addition one thing

then the second one is the subtraction thing

Step-by-step explanation:

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

it would open into a square depending on the type of envelope i’m not sure about the second part