FREE 100 POINTS and brainliest what is 5-4?

(giving points away is fun - i mean, uh, i need help. don't delete me again Mr. moderators)

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?

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1