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
yan [13]
3 years ago
7

Simplify (10 + 3i)(5 – 2i) ...?

Mathematics
2 answers:
iogann1982 [59]3 years ago
6 0
(10+3i)(5-2i)
30i=50-20i
50i=50
i=1

maybe
Fiesta28 [93]3 years ago
3 0

Answer:

56-5i

Step-by-step explanation:

Given are two complex numbers

10+3i and 5-2i

We are to find its product

Let us use foil method to multiply these two binomials.

(10+3i)(5-2i)\\=50+15i-20i-6i^2\\

Use the fact that i square =-1

We get product

= 50-5i+6\\=56-5i

You might be interested in
If I multiplied these binomials (x - 3) + (4x + 2) what would be the final product?
zlopas [31]

Answer: 4x^2 - 10x - 6

Step-by-step explanation:

You can use FOIL to do this. First terms, Outer terms, Inner terms, Last terms.

(x - 3)(4x + 2)

First terms: x * 4x = 4x^2

Outer terms: x * 2 = 2x

Inner terms: -3 * 4x = -12x

Last terms: -3 * 2 = -6

Now add these together:

4x^2 + 2x - 12x - 6 = 4x^2 - 10x - 6

8 0
3 years ago
Read 2 more answers
Geom help please will give brainliest
k0ka [10]

Try this option:

1] P(S)=0.84;

2] P(S or C, but not both)=0.4;

3] P(C)=0.76;

4] P(S∪C)=0.6;

5] P(C, but not S)=0.16;

6] P(S∩C)=1.00.

6 0
3 years ago
Read 2 more answers
The area of a rectangle is 440 square inches. The length of the rectangle is 29 inches more than its width. What is the length o
Andreyy89
The length of regtangle is 40 inches
3 0
3 years ago
David, Egil and Frances share money in the ratio 2:7:9. Frances gets ?80 more than David. Explain how you know Egil gets ?80.
Natalija [7]

Step-by-step explanation:

We have been given that David, Egil and Frances share money in the ratio 2:7:9.

Let 2x, 7x and 9x be the amounts of money that David, Agil and Frances get respectively.  

We are told that Frances gets $80 more than David. So we can write this information in an equation as:

9x=2x+80

Now let us solve for x.

9x-2x=80

7x=80

x=\frac{80}{7}

Now let us substitute x=\frac{80}{7} in 7x (amount of money that Egil gets).

\text{ Amount of money that Egil will get}=7\cdot \frac{80}{7}

Upon cancelling out 7 from numerator and denominator we will get,

\text{ Amount of money that Egil will get}=80  

Therefore, Egil will get $80.    

6 0
3 years ago
PLZ HELP !!! THIS TEST IS VERY IMPORTANT!!!!
andrew11 [14]

Answer:

E=20H

Step-by-step explanation:

E =20 when H=1

there fore the amount he receives per working time will be 20*H

8 0
3 years ago
Read 2 more answers
Other questions:
  • a skate shop rents roller skates as shown in the table below which graph and function model this situation,where c is the cost,i
    15·2 answers
  • Given: 15+6(y−2)=21 Prove: y = 3 Drag and drop the reasons into the boxes to correctly complete the proof. Statement Reason 15+6
    8·1 answer
  • (Y-1/4)-(y-4/5)=(y+4/10)-1
    6·2 answers
  • Apply the distributive property to create an equivalent expression.<br> 2(3-8y)= (awnser)
    15·2 answers
  • What is the least in 2 to the 1st power plus 3 to the 1st power and 3 to the 2nd power and 2 to the 3rd power minus 2 to the 1st
    11·1 answer
  • A bag contains five red marbles, two orange marbles ,one yellow marble , and two green marbales. Two marbles are drawn from the
    12·1 answer
  • Can anyone answer this please
    5·1 answer
  • Which ordered pair describes a point that is located 4 units to the left of the origin and 2 units below the x-axis?
    14·1 answer
  • Ms. Chin asked her students to use the properties of multiplication to rewrite the expression (negative 5) (Negative StartFracti
    14·2 answers
  • Two angels are called complementary when their measures add to 90. Two angels are called supplementary when their measures add u
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!