WILL GIVE BRAINEST ANSWER TO WHO EVER EXPLAINS BEST!!! At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?

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.

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.

Which has the greater energy, light of wavelength 519 nm or light with a frequency of 5.42 x 10^8 sec^-1?