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If qrs tuv, which congruences are true by cpctc? check all that apply. a. q u b. rs tu c. qs tv d. qr tu e. s v f. r u

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.