Atoms contain charged particles called protons and electrons. each proton has a charge of +1, and each electron has a charge of –1. a sulfur ion has 16 protons and 18 electrons. find the net charge.

a. –34

b. +2

c. 34

d. –2

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

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Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters