Find the nth term of this sequence: -1, 3, 7, 11, 15

Answer:

  f(1) = -8

Step-by-step explanation:

Apparently, you want the argument of the function such that the function value is -8. Fill in the given information and solve for x:

  -8 = -7x -1

  -7 = -7x . . . . add 1

  1 = x . . . . . . . divide by -7

Now, you know that ...

  f(1) = -8

I think 63, but I'm not sure, how do I delete an answer-

Answer:

x=63

Step-by-step explanation:

∠BAC=∠ACD=x(AB∥CD)

∠BCA=∠BAC=x(base∠s, isos△)

∠？BC+∠BCA=90（ext.∠of△）

27+x=90

x=90-27

x=63

Answer:

diagram?

Step-by-step explanation:

Final answer:

The original circle's radius cannot be definitively determined from the question as is, because the dilated circle's radius is not specified. However, if the dilated circle's radius is known, the original radius can be found by dividing the dilated radius by the scale factor, which is 2 in this case.

Explanation:

The question represents a geometric concept in Mathematics, specifically dealing with dilation of a circle. In dilation, a figure is altered in size without changing its shape. If a circle is dilated by a scale factor of 2, meaning it has been made twice as large, the radius of the dilated circle will be two times the radius of the original circle. If the scale factor is 2, the radius's length will be halved to get the measurement of the original circle's radius. Therefore, without the specific measurement of the dilated circle's radius, we can't definitively give the original circle's radius from the options given (A. 2 units, B. 2.75 units, C. 5.5 units, D. 11 units).

Learn more about Dilation here:

brainly.com/question/29811168

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