Do the following lengths form a right triangle?

Yes

Step-by-step explanation:

To make a right triangle, this equation must be true. a^2+b^2=c^2. This will be equal to 3^2+4^2=5^2. This is equal to 9+16=25. 25=25. Therefore, this triangle is a right triangle.

If this helps please mark as brainliest

answer: i guess 105 degrees?

step-by-step explanation:

we can't see all full 4 options, but if this is the full option, than the very left one is correct:

-2/5 * -3 3/4

remake the question, adding a picture of all the question, or write down the full left and right answers.