Hello there, and thank you for posting your question here on brainly.
The diameter of a circle is how long it is from the left side of the circle to the right side.
The radius of a circle is the length of either the left or the right side to the middle.
So, the radius is half of a radius.
You can divide the known diameter by 2 to get your answer.
Its diameter is 25.
Divide 25 by 2.
25 / 2 = 12.5
Its radius is 12.5 in.
That would be answer choice A.
Hope this helped!! ☺♥
Answer:
it is linear
Step-by-step explanation:
Rate of change is x = +3
y= -2
Answer:
The formula which can be used to describe the sequence is:
⇒ 3rd answer
Step-by-step explanation:
The terms of the sequence are -81, 108, -144, 192, ...
∵ 108 ÷ -81 = ![-\frac{4}{3}](https://tex.z-dn.net/?f=-%5Cfrac%7B4%7D%7B3%7D)
∵ -144 ÷ 108 = ![-\frac{4}{3}](https://tex.z-dn.net/?f=-%5Cfrac%7B4%7D%7B3%7D)
∵ 192 ÷ -144 = ![-\frac{4}{3}](https://tex.z-dn.net/?f=-%5Cfrac%7B4%7D%7B3%7D)
- There is a constant ratio between each two consecutive terms
∴ The sequence is a geometric sequence
The formula of the nth term of the geometric sequence is
, where a is the first term and r is the constant ratio between each two consecutive terms
∵ The first term is -81
∴ a = -81
∵ The constant ratio =
∴ r = ![-\frac{4}{3}](https://tex.z-dn.net/?f=-%5Cfrac%7B4%7D%7B3%7D)
- Substitute then in the formula above
∴ ![a_{n}=-81(\frac{-4}{3})^{n-1}](https://tex.z-dn.net/?f=a_%7Bn%7D%3D-81%28%5Cfrac%7B-4%7D%7B3%7D%29%5E%7Bn-1%7D)
Assume that
= f(x)
∴ n = x
∴ ![f(x)=-81(\frac{-4}{3})^{x-1}](https://tex.z-dn.net/?f=f%28x%29%3D-81%28%5Cfrac%7B-4%7D%7B3%7D%29%5E%7Bx-1%7D)
The formula which can be used to describe the sequence is:
![f(x)=-81(\frac{-4}{3})^{x-1}](https://tex.z-dn.net/?f=f%28x%29%3D-81%28%5Cfrac%7B-4%7D%7B3%7D%29%5E%7Bx-1%7D)
Opposite sides are equal in length and opposite angles are equal in measure. To find the area of a parallelogram, multiply the base by the height. The formula is: A = B * H where B is the base, H is the height, and * means multiply.