Consider u = {x|x is a negative real number}.
which is an empty set?
{x}x eu and x has a negative cube root}
xlx eu and x has a negative square root?
le
{x|x eu and x is equal to the product of a positive number and -1}
o {x|x eu and x is equal to the sum of one negative and one positive number}

Which shows how to solve the equation 3/4x=6 for x in one step?

Areflection of shape i across the y-axis, followed by a , and then a translation left 6 units and down 4 units confirms congruence between shape i and shape ii. alternatively, a of shape ii about the origin, followed by a reflection across the y-axis, and then a translation right 4 units and up 6 units confirms congruence between shape ii and shape i.

What ratio is proportional to 18/21