Which pair of triangles that are congruent that are using the hypotenuse leg congruence criteria?

Anne is twice as old as bill, and bill is 3 years older than christie. the sum of anne s and christie s ages equal 72. find their age difference.?

Awavelength of 610 nm was found to be the most intense wavelength emitted by copper. answer the following questions about this wavelength of light. a) what is this wavelength in cm? b) what is the frequency that corresponds to this wavelength? c) what is the energy of light of this wavelength? d) what is the wavenumber corresponding to this wavelength?

Angles 1 and 2 are complimentary angles. angle 1 = 52 degrees. what is the measure of angle 2?