15a - 54 = -9. Add 54 to each side.
15a = 45. Divide each side by 15.
a = 3
Answer:
%50
Step-by-step explanation:
The picture has half shaded
Answer:
12
Step-by-step explanation:
The standard of living may not have risen with industrial growth.
<span>The number of lines in a spectrum is dependent upon the material being tested. Elements are often the test subject, but (then again) planets and stars have spectra of their own. On an elemental level, a spectrum is based on the number of electron excitation possibilities. More complex structures have much more complex spoectral determinations. Spectral evidence, however, should never be admissible in court!</span>
