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
lozanna [386]
3 years ago
6

Simplify the following and express in the form a+bi. (-8-i)(-8+i)

Mathematics
1 answer:
sesenic [268]3 years ago
8 0
 (-8-i)(-8+i)
=65
 (-8-i)(-8+i) is already in a+bi form of a complex number.
You might be interested in
Consider the two account balances.
MrRissso [65]

Answer:

B.

Step-by-step explanation:

i think its right

3 0
2 years ago
Find the location of the center of a circle if the endpoints of the diameter are at (-10,
Artyom0805 [142]

Answer:

(- 1, - \frac{1}{2} )

Step-by-step explanation:

The centre is located at the midpoint of the diameter.

Using the midpoint formula , then

centre = \frac{-10+8}{2}, \frac{-5+4}{2} ) = ( \frac{-2}{2}, \frac{-1}{2} ) = (- 1, - \frac{1}{2} )

7 0
3 years ago
Kaylin buys a greeting card for $3.79. she then buys 4 postcards that all cost the same amount. the total cost is $5.11. how muc
Pie

Answer:

Step-by-step explanation:

Givens

Greeting Card = 3.79

Total Cost = 5.11

Post cards = x

Equation

Total Cost = Greeting Card + 4x

Solution

Substitute the gives into the equation

5.11 = 3.79 + 4x                       Subtract 3.79 from both sides

5.11 - 3.79 = 3.79 - 3.79 + 4x  Combine

1.32 = 4x                                  Divide by 4

1.32/4 = 4x/4

x = 33

Each post card costs 0.33 dollars

4 0
2 years ago
Rewrite the function f(x)=3(x+1)^2-2 in the form f(x)=ax^2+bx+c
frutty [35]

Answer:

f(x) = 3x² + 6x + 1

General Formulas and Concepts:

  • Order of Operations: BPEMDAS
  • Expand by FOIL (First Outside Inside Last)
  • Standard Form: f(x) = ax² + bx + c
  • Vertex Form: f(x) = a(bx + c)² + d

Step-by-step explanation:

<u>Step 1: Define function</u>

f(x) = 3(x + 1)² - 2

<u>Step 2: Find Standard Form</u>

  1. Expand by FOILing:                        f(x) = 3(x² + 2x + 1) - 2
  2. Distribute 3:                                     f(x) = 3x² + 6x + 3 - 2
  3. Combine like terms (constants):    f(x) = 3x² + 6x + 1
6 0
2 years ago
Read 2 more answers
Help me answer the question j
Marianna [84]

The value of the expression is 252

Step-by-step explanation:

The expression that we have to evaluate in this problem is

7x^2y

And we have toe valuate it for

x = 3

y = 4

In order to evaluate the expression, let's substitute the values of x and y into it:

7x^2y=7\cdot (3)^2\cdot (4)

First, we calculate the square of 3, which is:

3^2 = 3\cdot 3 = 9

Substituting into the expression,

7\cdot 3^2 \cdot 4 = 7\cdot 9 \cdot 4

Now we multiply everything and we get:

7\cdot 9 \cdot 4 = 252

Learn more about expressions:

brainly.com/question/7014769

brainly.com/question/11007572

brainly.com/question/11334714

#LearnwithBrainly

4 0
3 years ago
Other questions:
  • A pitcher contains 40 fluid ounces of iced tea. Shelby pours 3 cups of ice tea.How many pints of ice tea is left in the pitcher
    12·2 answers
  • Write the first 5 terms of the arithmetic sequence whose first term is 8 and whose common difference is -6.
    13·1 answer
  • Using the triangle pictured, find the measure of side AB. Round your answer to the nearest tenth. A) 1.6 B) 2.2 C) 2.7 D) 3.3
    9·1 answer
  • Eight less than a number is no more than 14
    12·1 answer
  • Calculate the loss on selling 50 shares of stock originally bought at 133/4 and sold at 12.
    15·2 answers
  • Find two pairs of numbers with 10 as their least common multiple.
    7·1 answer
  • When we take a census, we attempt to collect data from (a) a stratified random sample. (b) every individual selected in an SRS.
    12·1 answer
  • Hey! Please help,please and thank you
    13·1 answer
  • Which is the best definition for the term "segment bisector"?
    9·1 answer
  • Angelina wins money in a competition. She is given the choice as to how she is paid.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!