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
finlep [7]
2 years ago
6

Simplify the given expression below 2 over 2+5i

Mathematics
1 answer:
mezya [45]2 years ago
8 0
Well, you'd do the same as the previous one, use the conjugate of the denominator

\bf \cfrac{2}{2+5i}\cdot \cfrac{2-5i}{2-5i}\implies \cfrac{4-10i}{(2+5i)(2-5i)}\implies \cfrac{4-10i}{2^2-(5i)^2}
\\\\\\
\cfrac{4-10i}{4-(5^2i^2)}\implies \cfrac{4-10i}{4-(25\cdot -1)}\implies \cfrac{4-10i}{4+25}\implies \cfrac{4-10i}{29}
\\\\\\
\textit{and then you distribute the denominator}
\\\\\\
\cfrac{4}{29}+\cfrac{10}{29}i
You might be interested in
6^2 -(8-4) ^2 +7=<br> pls help I can’t fail math LOL
zimovet [89]
Well 6^2 = 36 and (8-4)^2 = 16 so you would do 16 + 7 which is 23 and then 36 - 23 = 13.
7 0
2 years ago
Read 2 more answers
(I WILL GIVE BRAINLIEST)
LUCKY_DIMON [66]

For this case we have the following polynomial:

3x ^ 2 + 9x + 15

The standard form of the polynomial is given by:

ax ^ 2 + bx + c

Where, the axis of symmetry of the polynomial is given by the expression:

x = - \frac {b} {2a}}

In this case we have:

a = 3\\b = 9

Therefore, replacing values we have:

x = - \frac {9} {2 (3)}

Rewriting we have:

x = - \frac {9} {6}\\x = - \frac {3} {2}

Answer:

The symmetry axis of the polynomial is given by:

x = - \frac {3} {2}

option C

6 0
3 years ago
HIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII Johnetta simplified seven over nine divided by three over eight.; her work is sh
ra1l [238]

Answer:

She made an error in step 1.

Step-by-step explanation:

4 0
2 years ago
A right circular cylinder has a base radius of 5 centimeters and a height of 12 centimeters. What is the volume of this cylinder
Nitella [24]
The formula of a cylinder is V=πr^2 h
The radius is 5cm and the height is 12cm

V=π5^2 12
V=300π cm cubed

Your answer is B) V=300π cm cubed
6 0
2 years ago
A square pyramid has a base area of 25 square inches, and a volume of 150 cubic inches. What is the height of the pyramid in inc
KonstantinChe [14]

Answer:

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • What is -x^3(-9x-7)-4x^4 in simplest form
    8·1 answer
  • Simplify expression 4x+2x+3x
    12·2 answers
  • Complete the proof of the polynomial identity. *help please draw a line from the correct answer to the correct blank*
    15·1 answer
  • Will get brainliest!!!!!! Math
    12·1 answer
  • PLEASE ANSWER FAST!!
    15·1 answer
  • If DH = (4x + 10) in. and HI = (2x − 4) in., then x =_______ , HI =_______ , and ID = _________
    14·1 answer
  • 100 POINTS!!!!!
    13·1 answer
  • I need help finding the volume of this figure.
    5·2 answers
  • Bx – 10 = f solve for x(z/2) - b = hSolve for z
    14·1 answer
  • Hi there. I am having an issue figuring out which is the base and which is the length.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!