Answer: 23) D
24) 2/3
Step-by-step explanation:
23.
[tex]A) \sqrt{6^2+6^2}=\sqrt{36+36}= \sqrt{72}= 8.5\\\\B) \sqrt{7^2+3^2}=\sqrt{49+9}=\sqrt{58}= 7.6\\\\C) \sqrt{4^2+9^2}=\sqrt{16+81}=\sqrt{97}=9.8\\\\D) \sqrt{15^2-10^2}=\sqrt{225-100}=\sqrt{125}= \large\boxed{11.2}[/tex]
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24.
[tex]\sqrt{\bigg(\dfrac{\sqrt2}{3}\bigg)^2+\bigg(\dfrac{\sqrt2}{3}\bigg)^2}=\sqrt{\dfrac{2}{9}+\dfrac{2}{9}}=\sqrt{\dfrac{4}{9}}=\large\boxed{\dfrac{2}{3}}[/tex]
