alexsan5537
21.09.2021 •
Mathematics
If BC = 2x, CD = 7x, and BD = 9, what is CD?
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Ответ:
18
Step-by-step explanation:
2(9)=18
Ответ:
D
Step-by-step explanation:
Lets go equation by equation.
A) Is an upside down parabola shifted up 2 units. It will have to go downwards so its range is not greater than 2 (it is actually y < 2).
B) This is your regular old parabola, moved up two and shifted right 1. This means that since the graph is shifted up two, it will be y >= 2 (because the lowest point will be at y = 2).
C) This is a line shifted up 8 with a slope of 2. This will definitely go to infinity in both directions so it doesn't have a limited range.
D) This is an exponential graph shifted up two units. It will go beyond y = 2 and up to infinity. So, its range is y >2.