Answer:
Step-by-step explanation:
y = x² + 4x is an up-opening parabola with x-intercepts 0 and -4.
y ≥ 0 when x≤-4 or x≥0
range: (-∞,-4)∪[0,+∞)
Answer:

Step-by-step explanation:
You move the decimal place over 6 times for the first equation and 5 for the second equation.
Hope this helps! Have a great day! :)
Answer:
65.12 mm
Step-by-step explanation:
Circumference of semicircle = 8π mm
Perimeter = (40 + 8π) = 65.12 mm
0.44
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