A scale of 8cm:12cm would be a scale of 2/3. since this is the case, we can divide the scale drawing of the playground by the scale factor to get the length of the actual playground
12.4/0.6666 = 18.6
The answer is 18.6
You would add up the length of all sides to get the area.
Answer:
third option and last option are the correct answers
Take half of the coefficient of the bx term and square on both sides:
x^2 - 10x + (-10/2)^2 = 46 + (-10/2)^2
x^2 - 10x + (-5)^2 = 46 + (-5)^2
x^2 - 10x + 25 = 46 + 25
x^2 - 10x + 25 = 71
Now factor x^2 - 10x + 25 which will give us (x - 5)^2
(x - 5)^2 = 71 is the answer.
Subtracting from both sides gives us the false statement so this equation can never be true and thus has no solutions.