Answer: 14
Step-by-step explanation:
10:20 and 20:30 form a ratio
i think is 3rd one, cuz in the app photomath it said (-1, -9)
so this might be close
You have to use the Pythagorean theorem a squared plus b squared is c squared so 13 squared plus 18 squared equals c squared. 13x13=169 18x18=324 169+324=493 so c squared is 493 to get c you square root 493 which equals 22.2 so the diagonal, c, is 22.2 centimeters long
You can only make one triangle because every triangle has 180 degrees so if you add these you get exactly 180 degrees for one triangle
