\(y=b\cdot a^x\\ a^x = \dfrac{y}{b}\\ x\ln a = \ln y - \ln b\\ x = \dfrac{\ln y - \ln b}{\ln a}\)
It's night for me :)
Don't forget this forum is very international :D
Great.
Btw, there are always some people asking "what is 1 + 1?", "what is 9 + 10 halp me" something like that...... Just answer them and tell them the truth 1 + 1 = 2 and 9 + 10 is not 21. lol
Hello Bean,(wait bean??)
3(x - 8)^2 - 29 = 37
3(x - 8)^2 = 66
(x - 8)^2 = 22
x - 8 = + 22 OR - 22
x = +30 OR -14
You are e^(pie*i)+1 in my group?
Percentage = 5 / 20 * 100% = 5 * 5% = 25%
13^(3x-1) = 91
(3x - 1)ln 13 = ln 91
(3x - 1)ln 13 = ln 13 + ln 7
(3x - 2)ln 13 = ln 7
\(3x - 2 = \dfrac{\ln 7}{\ln13}=\log_{13}7\)
\(x = \dfrac{\log_{13}7+2}{3}\)
And then use ur calculator to get 0.919551471
(x + 2)(2x) = 54
2x^2 + 4x = 54
2x^2 + 4x - 54 = 0
x^2 + 2x - 27 = 0
(x + 1)^2 = 28
x + 1 = +- sqrt(28)
x = -1 +- 2sqrt(7)
x = 2sqrt7 - 1 OR -1 - 2sqrt7(rejected)
x = 2sqrt7 - 1
If it is included angle:
a, b are the given sides, theta is the included angle
Area = \(\dfrac{ab\sin \theta}{2}\)
James:
178.93805309734513"%"
