Obtuse, accute, obtuse, acute, A.
Y= -7/15
Hope this is good enough :D
The first one is 5.3 you multiply 4x4 which is 16 then divide by 3 which then gives you the answer
7x + 4 + 9x = 180
16x = 176
x = 11
9x = 9x11 = 99
7x + 4 = 7(11) + 4 = 77 + 4 = 81
<span>in order to form a rectangular image, each angle needs to be equal 90 degreesn
99 - 9 = 90
81 + 9 = 90
answer
</span><span>B. 9°</span>
