Three of these ratios are equivalent to 8/20. which one is not equivalent?

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)