Answer:
<u><em>AB=23.40cm</em></u>
Step-by-step explanation:
<em>(AB)²=(AB)²+(BC)²</em>
<em>(AB)²=22×22+8×8</em>
<em>=484+64</em>
<em>(AB)²=548</em>
<em>AB=23.40 cm</em>
<em>hope it helps...</em>
<em>have a great day!!</em>
-4x+ y = 6. (-3,-6)
-4(-3) + (-6) = 6
12 + (-6) = 6
12 - 6 = 6
6 = 6
the ordered pair (-3, -6) is a solution to the first equation.
5x - y = 21. (-3, -6)
5(-3) - (-6) = 21
-15 - (-6) = 21
-15 + 6 = 21
-9 = 21
the ordered pair (-3, -6) is not a solution to the second equation.
hope this helped, God bless!