Given z1 = -5+ 4i and Z2 = -3+i, calculate the product 21 22 and express all three complex numbers in polar form, rounding all angles to the nearest degree in
the interval 0° << 360°. Express all moduli in simplest radical form.

Mp model with mathematics explain how the number of text messages dario sent and the cost form an arithmetic sequence. then write an expression to find dario's text messaging bill if he sends n text messages over 250.

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me