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
Serggg [28]
2 years ago
9

Please help me answer this question genius

Mathematics
1 answer:
kolbaska11 [484]2 years ago
7 0

Answer:

  x ∈ {-0.465, 1.014}

Step-by-step explanation:

The equation can be cast in the form f(x) = 0, and solved easily using a graphing calculator. That shows x ≈ -0.465 and x ≈ 1.014. The same calculator can iterate the roots to full calculator precision.

__

The equation can be made a quadratic by the substitution ...

  z = e^(2x)

Then we have ...

  2\cosh(2x)-\sinh(2x)=4\\\\2\cdot\dfrac{e^{2x}+e^{-2x}}{2}-\dfrac{e^{2x}-e^{-2x}}{2}-4=0\qquad\text{use exponential identities}\\\\2z+2z^{-1}-z+z^{-1}-8=0\qquad\text{multiply by 2, substitute z}\\\\z^2 -8z+3=0\qquad\text{multiply by z}\\\\z=\dfrac{8\pm\sqrt{(-8)^2-4(1)(3)}}{2(1)}=4\pm\sqrt{13}\\\\x=\dfrac{\ln(z)}{2}=\dfrac{\ln(4\pm\sqrt{13})}{2}\approx\{-0465133,1.014439\}

You might be interested in
HELPPPPPPPPP ASAPPPPPPPP PLSSSS
yanalaym [24]

-1/3(px-2) = 9

ok! so first we want to isolate x.

multiply both sides by -3/1 (this is the reciprocal of -1/3)

(px-2) = -27

px = -27 + 2

px = -25

x = -25/p

hope this helped!

8 0
3 years ago
Find the product. (-4·3·2)2 -48 48 -576 576
VLD [36.1K]
(-4*3*2)^2 = (-24)^2 = 576

hope this will help you 
5 0
3 years ago
Read 2 more answers
A triangular pyramid is formed from three right triangles as shown below.
juin [17]

Answer:

70

Step-by-step explanation:

RU=20 (45-45-90 triangle)

use pythagorean theorum

20^2+b^2=73^2

evaluate

b^2=4929

sq root both side

rounded to nearest integer, side SU is 70

8 0
3 years ago
Which expression is equivalent to i 233?<br> a)1<br> b)–1<br> c)i<br> d)–i
Aneli [31]

We have to find the value of the expression i^{233}

We know that the below values.

i^2=-1\\i^4=1

Hence, in order to find the value of the given expression, we can first rewrite it in terms of i^4

i^{233}=(i^4)^{58}\cdot i

Now, we know that i^4=1

Hence, we have

i^{233}=(1)^{58}\cdot i

i^{233}=1\cdot i

i^{233}=i

C is the correct option.

5 0
3 years ago
Read 2 more answers
The GCF of the following numbers. 32 and 40
Simora [160]
The answer should be 8.
4 0
3 years ago
Other questions:
  • Write an exponential function of the form y=ab^x whose graph passes through the given points.
    9·1 answer
  • . Name the place value of the digit 3 in the number 3,240,987
    5·1 answer
  • Which expression below has the same value as X3
    15·1 answer
  • Can someone please help me this?<br> Math 8
    9·1 answer
  • What is the momentum of each hockey player? Hockey player 1 has a mass of 65 kg and a velocity of 3.8 m/s
    14·1 answer
  • What is the solution to this equation x + 14= -6
    12·1 answer
  • The number of users on a website is 3700 and is growing exponentially at a rate of
    14·1 answer
  • Please give me answer to write your copy and send the answer......​
    8·1 answer
  • Find the slope for (3,0) and (4,1)
    11·1 answer
  • Dr. Bayer measured the masses of newborn twins. Baby A weighs 2.8 kilograms. Baby B weighs 2,950 grams. What is the difference b
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!