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

Human hair grows 1.758x10^-4 m per hour express the rate in standard form.

The distances between Centerville, Springfield, and Capital City form a right triangle. The distance between Centerville and Springfield is 913 kilometers and t

On the number line above, the numbers a and b are the same distance from O.Part AWhat is a + b?Answer:Part BExplain what you did to solve this problem.

At sea level, there are approximately 2.6 × 1025 molecules m–3 of the atmosphere. There are 5.20 × 1021 molecules m–3 of one of the gases making up the atmosphe

Please only solve for angle 1 and ignore the question above.

This list gives information about a classroom.Study the list carefully. Then, use the drop-down menu to complete the statementbelow about the listWidth in Feet:

SCC Library667737985Based on the graph of this normal distribution,a. The mean isb. The median isThe mode isd. The standard deviation isCheck Answer

I would like someone to help me so I can understand what to do. Pls anyone

School is making digital backups of old reels of film in its library archives the table shown approximate run Times of the films for a given diameter of film i

question is in image