-1
okay if x-4=3 then x=7 bcause 4+3=x = 4+3=7 and 7-4=3!
(x - 3)/(12 - 4x) = (x - 3)/[4(3 - x)] = (x - 3)/[-4(x - 3)] = 1/-4 = -(1/4)
3 x 2 x 4 = 24 (3 x 2) x 4 = 6 x 4 = 24 3 x (2 x 4) = 3 x 8 = 24 2 x (3 x 4) = 2 x 12 = 24
x=unknown number So the expression would be: 4(x+3) The sum of a number (x) and 3, all multiplied by 4.
You would write it as x/3 -4, where x is whatever the number is.
-1
If you mean: 3(x+5) = 4(x-2) then the value of x works out as 23
A simple way to do this problem would be to factor x^2-x-12 into (x+3)(x-4) we can then write: (x+3)(x-4)/(x-4) and then the (x-4) in the top and bottom of the fraction both cancel leaving just x+3 as the solution.
3 plus 4 x plus 5 31 when simplified would give x = 23/4.
okay if x-4=3 then x=7 bcause 4+3=x = 4+3=7 and 7-4=3!
Volume of a sphere = 4/3 x pi x radius3; (4/3) x 3.1416 x (10 inches)3 = (4/3) x 3.1416 x 1,000 cubic inches = 4,188.8 cubic inches
(x - 3)/(12 - 4x) = (x - 3)/[4(3 - x)] = (x - 3)/[-4(x - 3)] = 1/-4 = -(1/4)
x^(-5/3) = 4 1/x^(5/3) = 4 x^(5/3) = 1/4 [x^(5/3)]^(3/5) = (1/4)^(3/5) x = 1/4^(3/5) or, x = 4^(-3/5) Check: x^(-5/3) = 4 [4^(-3/5)]^(-5/3) = 4 ? 4 ^(15/15) = 4 ? 4^1 = 4 ? 4 = 4
0.75
( 3/4 ) x ( 3/4 ) = ( 3 x 3 ) / ( 4 x 4 ) = 9/16
x/3 + x = 4 times all by 3 x +3x = 12 add the two x's together 4x=12 divide by 4 x=3 test your work 3/3 + 3 =4 1+3=4 4=4
Please can you clarify the following points (i) should there be a + or - sign between x and 1? (ii) do you mean everything in the bracket to the power of -3? I would rewrite this as 20(x+1)^-3 or 20(x-1)^-3 where the ^ means 'to the power of' If it is one of these last two, then differentiating you would get -3*20*(x+1)^-4 or -3*20*(x-1)^-4 (8 means multiplied by ) or simplifying -60(x+1)^-4 or -60(x-1)^-4