Answer:
Step-by-step explanation:
Let the sides of triangle be a, b and c
<u>Perimeter</u>
<u>New sides </u>
<u>New perimeter </u>
- Pn = 12a + 12b + 12c = 12(a+b+c) = 12*40 = 480 ft
Correct choice is D
Yes because if you graph it, it will pass the vertical line test
To prove that the answer is line 2, you would need to disprove that the answer is line 1.
To disprove line 1, we can expand both expressions in the brackets and see if they are equivalent to x² - x - 6
(x + 2)(x - 3) = x² + 2x - 3x - 6 = x² - x - 6
So those brackets are equivalent
(x + 0.5)²
= (x + 0.5)(x + 0.5) = x² + 0.5x + 0.5x + 0.25 = x² + x + 0.25
x² + x + 0.25 - 6.25 = x² + x - 6
So line 1 is incorrect because (x + 0.5)² - 6.25 is not equivalent to x² - x - 6.
I hope this helps! Let me know if you would like me to show you how to prove that line 2 is correct :)
Answer:
66
Step-by-step explanation: