7x - 8 = 3x + 4
4x - 8 = 4
4x = 12
x = 3
Check it.
21 - 8 = 9 + 4
It checks.
If ten times the number n decreased by 13 is equal to the square of the same number n increased by 3, then the value of n is either 8 or 2.
3x+32=4x-15 3x-4x=-15-32 x=-47
6n - 3n which simplifies to 3n.
x - 2 = 7 + x/4 4x - 8 = 28 + x 3x = 36 x = 12
x-4=8+x/5 5(x-4)=5(8+x/5) 5x-20=8+x 4x=28 x=7
If ten times the number n decreased by 13 is equal to the square of the same number n increased by 3, then the value of n is either 8 or 2.
3x+32=4x-15 3x-4x=-15-32 x=-47
Decreased
Let the number be x:- 4x+40 = 100-x => 5x = 60 => x = 12 So the number is 12
6n - 3n which simplifies to 3n.
Eleven
Australia's population has increased
If force is increased and pressure remained the same, then the area must have been decreased.
Yes because one number has been increased by a 1/4 while the other number has been decreased by a 1/4 So 3*80 = 240 and 4*60 = 240
x+5 = 7 - (2x) 3x = 2 x = 2/3 The number is 2/3
x3 + 4x
There are 3 possibilities:-1) If the pinion has less teeth than the wheel - torque is increased.2) If the pinion has more teeth than the wheel - torque is decreased.3) If the pinion has the same number of teeth as the wheel - torque is constant.