Apply the distributive property to expand the expression.

−0.5(7−1.5k)−0.5(7−1.5k)

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(40 points) i need some . an answer definition is appreciated as well.

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?

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?