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
IRINA_888 [86]
4 years ago
10

Simplify the expression (3+i)(2+i)

Mathematics
2 answers:
Ipatiy [6.2K]4 years ago
4 0

Answer:

5 +5i

Step-by-step explanation:

(3+i)(2+i)

FOIL

first 3*2 =6

outer: 3i

inner : 21

last i*i = i^2 = -1

Add them together

6+3i+2i-1

5 +5i

vovikov84 [41]4 years ago
3 0

Answer:

Step-by-step explanation:

hello :

(3+i)(2+i) = 6+3i+2i+i²      but : i² = -1

(3+i)(2+i) = 5+5i

You might be interested in
Inez has to pay 4 percent in closing costs and 16 percent for the down payment on a purchase of $225,500 with an ARM. Over the l
vivado [14]

Answer:

A. $307,172.72

Step-by-step explanation:

Inez has to pay 4 percent in closing costs and 16 percent for the down payment on a purchase of $225,500 with an ARM.

4% + 16% = 20%

lnez has to pay 20% of $225,500

= 225,500*20/100

= 225,500*0.2

= $45100

lnez has to pay $45100.

Over the life of the loan, lnez will pay $262,072.72

Now we have to add down payment, closing cost and the payment over the life of the loan.

$45100 + $262,072.72

= $307,172.72

Answer: A. $307,172.72

Thank you.

5 0
3 years ago
Read 2 more answers
An ice cream cone is made of a cone shape and half a sphere shape. Explain how you could find the volume of the entire ice cream
kondor19780726 [428]
Call the radius r and the height of the cone h.  The formula for the volume of a cone is r^2*h*pi/3, and the formula for the volume of a sphere is 4r^3/3, so half of a sphere has volume 2r^3/3.  Adding these, our answer is:

\frac{r^2 h \pi+r^3}{3}
4 0
3 years ago
1/2+(-5/6)+1/4<br><br> -7/12<br> -1/12<br> 1/12<br> 1 7/12
Stells [14]

Answer:

-1/12

Step-by-step explanation:

3/6 + (-5/6) = -2/6

-2/6 = -4/12

1/4 = 3/12

-4/12 + 3/12 = -1/12

3 0
3 years ago
How do you find the area of an isosceles triangle?
wlad13 [49]

Answer:

By using the formula: \frac{1}{2}*b*h

3 0
3 years ago
Suppose you choose a marble from a bag containing 3 red marbles, 3 white marbles, and 5 blue marbles. You return the first marbl
Aloiza [94]
The answer is 15/121.

Since we have red AND blue, that means that both of these events occur, so we will use the multiplication rule and multiply these two probabilities:

- A probability of choosing a red marble: 3/11. (because there are 3 marbles out of total 11 marbles)
- A probability of choosing a blue marble after the red one: 5/11. (because there are 3 marbles out of total 11 marbles; there are 11 in total again because the first marble has been returned)

So, P(red and blue) is 3/11 * 5/11 = (3*5)/(11*11) = 15/121
6 0
3 years ago
Read 2 more answers
Other questions:
  • Martha earned a gross pay of $1,215.60 last week. Using the fact that Social Security tax is 6.2% of gross pay, determine the am
    10·2 answers
  • Evaluate the fraction 4!•3!
    9·1 answer
  • 3a) The slope of the line parallel to y = -2x + 3 is ___ *
    13·2 answers
  • Set A is a set of interfere greater than -12 and less than -4.
    6·1 answer
  • Answer it please , thanks
    10·2 answers
  • H(x)=x-4 what’s is the domain of h?
    6·1 answer
  • What was the biggest
    14·2 answers
  • . The internal telephone numbers in the phone system on a campus consist of five digits, with the first digit not equal to zero.
    15·1 answer
  • Find the surface area of a square pyramid with side length 1 yd and slant height 3 yd.
    6·1 answer
  • Dom's monthly elctricty bill is £33. how much does he spend on electricity each year
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!