1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elenna [48]
2 years ago
10

Simplify the expression to a + bi form: (-6 - 9i)(-11 + 7i)

Mathematics
2 answers:
jek_recluse [69]2 years ago
4 0

Answer:

129+57i

Step-by-step explanation:

kumpel [21]2 years ago
3 0

( - 6 - 9i)( - 11 + 7i) \\  = 66 - 42i + 99i - 63 {i}^{2}  \\  = 66 + 57i + 63 \\  = 129 + 57i

I hope I helped you^_^

You might be interested in
Dinah went out to eat at a restaurant. She wants to leave the waitress a tip of 18%. She can determine the amount she should pay
hoa [83]

Answer:

C. 1.18b

Step-by-step explanation:

Hi! Ace here!

In order to do this, we have to convert 18% into a decimal.

The decimal form of it is .18.

So we have to do

b+.18b

Combine like terms:

1.18b

I hope this helped

6 0
3 years ago
Read 2 more answers
Paige rides her bike around town. She can ride one half of a mile in 1 30 ith of an hour. If she continues to ride at the same p
oksano4ka [1.4K]
She could travel 15 miles in an hour
6 0
3 years ago
Read 2 more answers
Angle c is inscribed in circle O. AB is a diameter of circle O. what is the radius of circle.​
Llana [10]

Answer:

The value of radius is 7.5 units

Step-by-step explanation:

Given that a line that pass through the origin and form a triangle is a right-angle triangle. So in order to find the diameter/hypotenuse, you have to use Pythogaras Theorem :

{c}^{2}  =  {a}^{2}  +  {b}^{2}

Let a = 12 units,

Let b = 9 units,

Let c = hypo.,

{hypo.}^{2}  =  {12}^{2}  +  {9}^{2}

{hypo.}^{2}  = 225

hypo. =  \sqrt{225}

hypo. = 15 \:  \: units

We have found out that the hypotenuse of the triangle is the diameter of circle. So in order to find radius, you have to divide it by 2 :

radius = diameter \div 2

radius = 15 \div 2

radius = 7.5 \:  \: units

6 0
3 years ago
1468:22-6+8888-998=????????
irinina [24]
Answer is 7950,72. You can solve it's task on calculator.
7 0
3 years ago
? Explain idk what that means
Korvikt [17]

7 people, 7 walls, 48 minutes

Each person paints 1 wall in 48 minutes

20 persons, 20 walls

Each can paint 1 wall in 48 minutes so it will

take 48 minutes.

5 0
3 years ago
Other questions:
  • Determine the answer of c. X^2+16x+c
    15·1 answer
  • 6. In the figure below, measure of angle 1 = 3x + 5, measure of angle 2 = 5x - 18, and measure of angle 3 = 7x-2
    7·1 answer
  • The mass of the electron is
    12·1 answer
  • Zeller, Inc., has 50,000 shares of stock outstanding. Zeller declares a dividend of $480,000. What is the dividend per share?
    15·1 answer
  • PLEASE HELP!!
    9·1 answer
  • 5x – 3y &gt; 6<br> 3x + 2y 2 4
    15·1 answer
  • . line containing ( −3, 4 ) ( −2, 0)
    15·2 answers
  • What is the solution to this system of equations?<br> x + y = 11<br> 2x - y = 10
    5·1 answer
  • Mrs. Oliver has 41 pairs of shoes and purchases two new pairs each month.
    15·2 answers
  • Is (–3, –2) a solution to the equation y = x + –1?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!