Answer:
Step-by-step explanation:
To determine if the given values are part of a right-angled triangle, we need to use the Pythagorean theorem, removing one of the variables, and if it results in the neglected value, it is a right-angled triangle.
![a^2+b^2=c^2\\](https://tex.z-dn.net/?f=a%5E2%2Bb%5E2%3Dc%5E2%5C%5C)
b.
![21^2+24^2=c^2\\c=31.9](https://tex.z-dn.net/?f=21%5E2%2B24%5E2%3Dc%5E2%5C%5Cc%3D31.9)
DEF is not a right triangle.
c.
![7.1^2+2.4^2=c^2\\c=7.5](https://tex.z-dn.net/?f=7.1%5E2%2B2.4%5E2%3Dc%5E2%5C%5Cc%3D7.5)
GHI is a right triangle.
<em>Hope this helped! If you need more help with the practice, please comment below. Have a good day!</em>
2/5 = 40%. 100 divided by 5 = 20 x 2 = 40%
Answer:
75
Step-by-step explanation: