CA⃡ is the perpendicular bisector of̅BD̅̅̅̅.Given that AB=3x

If ${\displaystyle \frac{n}{9}=72}$, which of the equations is true?
1) ${\displaystyle n=\frac{72}{9}}$
2) ${\displaystyle n=72\times 9}$
3) ${\displaystyle n=9÷72}$
4) ${\displaystyle n=72+9}$

find a formula for the quadratic function whose graph has the given y-intercept of y=-1 and a vertex at (-1,-2)

why lines points and plane called undefined terms?

Two out-of-phase loudspeakers separated by a distance d emit 170 Hz sound waves along the X-axis. As you walk along the axis, away from the speakers, you hear only maximum intensity pitch. Assuming a sound speed of 340 m/s, what are the two first values for d for such occurrence?

Consider the complex number 𝑧 = −1 − 𝑖√2 

a) Using De Moivre’s Theorem, find 𝑧^3 𝑎𝑛𝑑 𝑧^5

b) Plot 𝑧, 𝑧^3 𝑎𝑛𝑑 𝑧^5 on an Argand Diagram.