x + 4
A certain number increased by 4
2*x+(-4) or x+(-4)+(-4) ?
increased means added to so a certain increased by 4 would be x + 4
x + 4x = 5x, where x ≥ 0
x/4+7=-31
"4 times a number increased by 7" means you first take a number (let's call it ( x )), multiply it by 4, and then add 7 to the result. In mathematical terms, this can be expressed as ( 4x + 7 ). Essentially, you are scaling the number by 4 and then adding 7 to that scaled value.
The expression for the quotient of 4 and a number x increased by 6 is (4/x) + 6. To simplify this expression, you would first divide 4 by x to get 4/x, then add 6 to the result. The final expression represents the quotient of 4 and x with an additional 6 added to it.
(x + 4) = 10Subtract 4 from each side of the equation:x = 6
x - 2 = 7 + x/4 4x - 8 = 28 + x 3x = 36 x = 12
To increase a number by 4 percent, multiply the number by 1.04. In this instance, 1100 x 1.04 = 1144Therefore, 1100 increased by 4 percent is equal to 1144.
x-4=8+x/5 5(x-4)=5(8+x/5) 5x-20=8+x 4x=28 x=7
15 increased by two times a number x