x(3x - 2) = (3x + 1)(x - 2)
3x^2 - 2x = 3x^2 - 6x + x - 2
3x^2 - 2x = 3x^2 - 5x - 2
-2x = -5x - 2
-2x + 5x = -2
3x = -2
x = -2/3
hope this helped xx
1. B forms a proportion, this is what I did, i simply 10/18 to 5/9 and i try to see if 5/9 is equivalent to 25/45 and it is. 5/9*5/5= 25/45
2. You multiply 27*4=108 then 108/12=9 so a=12
3. you multiply 16*21=336 then 336/12=28 so b=28
Hope this helps!
25.
Look at this:
There are 5 digits in 46987.
There will be 5 combinations.
5 times 5 = 25.
You have your answer.
F(x) = 3x+1
G(x) = X^2 - 6
F(G(x)) = F(X^2 - 6) = 3(X^2 - 6) + 1 = 3X^2 - 18 + 1 = 3X^2 -17
F(G(x)) = 3X^2 - 17
Sqrt(4^2 + 7^2) = Sqrt(65)= 8.06
Sqrt(5^2+7^2) = Sqrt(74) = 8.6
Sqrt( 4^2+5^2) = Sqrt(41) = 6.4