Answer:
88000
Step-by-step explanation:
387 / 129 = 3
that means the population will double three times
11000 x 2 = 22000
22000 x 2 = 44000
44000 x 2 = 88000
I think the first graph is one.
I'm not sure of the second one but I'm sure you could find an online graphic callculator to use and type in the choices to find the answer.
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Given:
In triangle XYZ, x = 27 cm, y = 79 cm and
.
To find:
The length of z.
Solution:
In triangle XYZ, using the Law of cosine, we get
![z^2=x^2+y^2-2xy\cos Z](https://tex.z-dn.net/?f=z%5E2%3Dx%5E2%2By%5E2-2xy%5Ccos%20Z)
Putting the given values in the above formula, we get
![z^2=(27)^2+(79)^2-2(27)(79)\cos (142^\circ)](https://tex.z-dn.net/?f=z%5E2%3D%2827%29%5E2%2B%2879%29%5E2-2%2827%29%2879%29%5Ccos%20%28142%5E%5Ccirc%29)
![z^2=729+6241-4266(-0.788)](https://tex.z-dn.net/?f=z%5E2%3D729%2B6241-4266%28-0.788%29)
![z^2=6970+3361.608](https://tex.z-dn.net/?f=z%5E2%3D6970%2B3361.608)
![z^2=10331.608](https://tex.z-dn.net/?f=z%5E2%3D10331.608)
Taking square root on both sides.
![z=\pm \sqrt{10331.608}](https://tex.z-dn.net/?f=z%3D%5Cpm%20%5Csqrt%7B10331.608%7D)
![z=\pm 101.6445178](https://tex.z-dn.net/?f=z%3D%5Cpm%20101.6445178)
Approx the above value to the nearest number and side length cannot be negative. So,
![z\approx \pm 102\text{ cm}](https://tex.z-dn.net/?f=z%5Capprox%20%5Cpm%20102%5Ctext%7B%20cm%7D)
Therefore, the length of z is about 102 cm.
Answer: 1.86 repeating
Step-by-step explanation: