It is arithmetic.
It starts at - 5,
the next item is 0 then 5 and next is 15 ...
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It isn't geometric. You are not multiplying by 5
The second term must be and not- 5 * 5 = - 25
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A Fibonacci series adds the previous two terms together to get the next term
Usually it starts at 0, but it doesn't need to.
0,1,1,2,3,5,8,13,21,34 ....
Answer:
The length around the figure in terms of r is 2r (
+ 4).
Step-by-step explanation:
The perimeter of an object is the total length of the boundary of the object.
The figure consists two similar semicircle and a rectangle.
Adding the two semicircles, a complete circle is formed. The circumference of a circle = 2
r.
The rectangle has a length which is twice its height.
i.e l = 2h
But,
r =
(the diameters of the semicircles equal the height of the rectangle)
⇒ h = 2r
Thus, one side length of rectangle = 2 × 2r (l = 2 × h)
= 4r
The length around the figure in terms of r is:
= 2
r + 4r + 4r
= 2
r + 8r
= 2r (
+ 4)
The length around the figure in terms of r is 2r (
+ 4).
All of them are wrong except number 12. The top left is 7, the top right is 26, the bottom left is 4. And a little hint, do what's in the parentheses first. Hope I helped!!
1) 6x - 5y = 5
3x + 5y = 4
9x = 9
x = 9/9
x = 1
So,your final answer is x = 1.
2) It would be: -x - 3y = -12
x + 3y = 12
x = 12 - 3y
So, option B would be your final answer.
Hope this helps!