Solve the equation and show your work. tell whether it has one solution, an infinite number of solutions, or no solutions, and identify each equation as an identity, a contradiction, or neither 4x + 8 = 2x + 7 + 2x - 20

Hello!

To solve for x in algebraic equations, we need to use SADMEP. SADMEP is only used to solve these equation, and our goal is to isolate x. SADMEP is known as: subtraction, addition, division, multiplication, exponents and parentheses.

4x + 8 = 2x + 7 + 2x - 20 (simplify alike terms)

4x + 8 = 4x - 13 (subtract 8 from both sides)

4x = 4x - 21 (subtract 4x from both sides)

0 = -21

This equation has no solutions because 0 is not equal to -21, and is identified as neither because it has no real solutions.

the above table 1 will calculate the population size (n) after a certain length of time (t). all you need to do is plug in the initial population number (no), the growth rate (r) and the length of time (t). the constant (e) is already entered into the equation. it stands for the base of the natural logarithms (approximately 2.71828). growth rate (r) and time (t) must be expressed in the same unit of time, such as years, days, hours or minutes. for humans, population growth rate is based on one year. if a population of people grew from 1000 to 1040 in one year, then the percent increase or annual growth rate is 40/1000 x 100 = 4 percent.

step-by-step explanation: