I can help with 3
Each side is different because the rectangle has opposite sides, so the equations should be different
Answer:
law of cosines
c^2=(5)^2+(12)^2-2(5)(12)cos72
<em><u>ANSWER</u></em>
My answer is in the photo above
Answer:
3/8=9/24
7/6=28/24
Step-by-step explanation:


Answer:
five
Step-by-step explanation:
2x5=10-3=7