An element with a mass of 630 grams decays by 30% per minute. To the nearest minute, how long will it be until there are 30 grams of the element remaining?

Manuela claims that and are congruent. which statement best describes her claim? she is incorrect because the segments do not have the same orientation. she is incorrect because the segments do not have the same length. she is correct because the segments have the same length. she is correct because the segments have the same orientation.