Which number is not written in scientific notation?

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two

In the diagram below,abc is congruent to dec what is the value of x