Please help ! I will give 20 points ! ( also have a good day ! :D )

Ageologist had two rocks on a scale that weighed 4.6 kilograms together. rock a was 0.5 of the total weight. how much did rock a weigh?

Question 3(multiple choice worth 1 points) use the arc length formula and the given information to find r. s = 16 cm, θ = 48°; r = ? sixty divided by pi cm thirty divided by pi cm one third cm one hundred twenty divided by pi cm

Segment wx is shown explain how you would construct a perpendicular bisector of wx using a compass and a straightedge