54 / 9 = n n = 6
13
6x-7=8x+9 bring the x over -7=2x+9 take the 9 over -16=2x divide both sides by 2 x=-8
3x2 + 2x + 2 = 0 Can not be factored. You can however solve it for x: 3x2 + 2x = -2 x2 + 2x/3 = -2/3 x2 + 2x/3 + 1/9 = -2/3 + 1/9 (x + 1/9)2 = -5/9 x + 1/9 = ±√(-5/9) x = -1/9 ± i√(5/9) x = -1/9 ± i√5 / 3 x = -1/9 ± 3i√5 / 9 x = (-1 ± 3i√5) / 9
The variable is a. You can solve for it, like this: 8a - 9 = 7a - 6 8a = 7a + 3 8a - 7a = 3 a = 3
log x + 2 = log 9 log x - log 9 = -2 log (x/9) = -2 x/9 = 10^(-2) x/9 = 1/10^2 x/9 = 1/100 x= 9/100 x=.09
11
2,2,6,9
9x = 27 log(9) + log(x) = log(27) log(x) = log(27) - log(9) log(x) = log(27/9) 10log(x) = 10log(27/9) x = 27/9 x = 3 This strikes us as the method by which the federal government might solve the given equation ... after appointing commissions to study the environmental impact and recommend a method of solution, of course.
You would do it it by oppisites. 3+2+4=9 which equals C.
To solve for 2 unknown variables you need 2 independent equations. You have only 1.
b+9=2 sbtract nine both sides b=2-9 b=-7
The answer is 567. 2x189=378. 3x189=567.
-7
x=2 because 9-(14)=-5
To solve x^7 = 9 take the 7th root: x = 9^(1/7) Alternatively, take logs 7*log(x) = log(9) log(x) = log(9)/7 x = 10^{log(9)/7} or use natural logs, so that x = e^{ln(9)/7}
2/9=x/72 144=9x 16=x