foxpower0519 foxpower0519

04-05-2020
Mathematics

contestada

When you multiply (3+6i)(3+7i) you get an answer of the form a+bi. Find a.

Respuesta :

OfficialRoytriever OfficialRoytriever

04-05-2020

(3 + 6i)(3 + 7i)

FOIL: First, Outside, Inside, and Last

3 x 3 = 9

3 x 7i = 21i

6i x 3 = 18i

6i x 71= 42i

9 + 21I + 18I + 42I = 9 + 81I

a = 9

B = 81I

Answer Link

Otras preguntas

Over what interval is the function in this graph constant?

Using the data provided below, calculate the corrected wavelength for a spectroscope reading of 6.32. Spectroscope Readings Known Helium Wa

Does anyone know this?

A bank has $1,000 in deposits and the required reserve ratio is 10 percent. Based on this information Write down your responses as a whole number.

qual foi o objetivo da implantação da zona franca de manaus ?

A very accurate estimate that is formed only after most design work is complete:_________ Definitive estimate Parametric estimate Feasibility estimate Ballpa

A department store sells a pair of shoes with an 80% markup. If she store bought the pair of shoes for 55.25$, what is the selling price to the nearest dollar?

when does and daytime a car daytime occurs? when the earthA. faces the sun at the same timeB. is facing away from the sunC. moves around the moonD. moves along

HELLPPPPPlease match the verb forms in column A with the sentences they belong to in column B

Charlotte volunteered to deliver dinners for seniors. The supervisor told her to take half the meals to Oak Hill Senior Center, one-fourth of them to the Glenvi