chips0625 chips0625
  • 16-07-2020
  • Mathematics
contestada

How to solve the exponential equation for 3^k2 • 3^-k+2 = 81

Respuesta :

fronzxx2020 fronzxx2020
  • 16-07-2020

Answer:

k=2

Step-by-step explanation:

3^k*2 * 3^-k+2 = 81

Factor out 81 to be : 3^4

Rewrite the equation:

k*2 - k+2 = 4

k^2 - 2k = 4

Simplify : k+2 = 4

               - 2   - 2

             k = 2

Answer Link

Otras preguntas

write a Letter to the headmaster asking for permission to be absent on a particular day​
4 whole numbers whose median is 11 and whose range is 3
1/R = 1/A + 1/B assuming that all denominators are non-zero solve for B
What does inversely proportional mean
The students in Mr.Collin's class used a surveyor's measuring device to find the angle from their location to the top of a building. They also measured their di
Povidone-lodine GargleAryadine​
Can someone help me. I need to show the box method also can someone show me.
tres amigos. se van de viaje y quieren. alquilar un coche durante un fin de semana.Han calculado que cada uno tendra que pagar en total 600 pesos por el alquile
Is this possible?a=ba²=aba²-b²=ab-b²(a+b)(a-b)=b(a-b)(a+b)=ba+a=a2a=a2=1​
Simplify completely*****​