Choice 1
Choice 1 and 3 shows parallel, choice 2 and 4 shows perpendicular. So cross out choices 2 and 4. We’re left with choices 1 and 3. I would go with choice 1 since choice 3 shows RAY A is parallel to RAY B, which isn’t true, they’re not parallel.
3(x+5)=7-x3x+15=7-x4x=-8x=-2
Answer:
sin(C) = opposite side / hypotenuse
= 15/17
It’s rational because the square root of 0.49 is 0.7
