Aclassroom has triangular tables. there is enough space at each side of a table to seat on child. the tables in the class are arranged in a row (shown in the picture above)

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Step-by-step explanation:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol