If the radius is 11 and 3x 2 represents
the diameter, find the value of x.

Please help!?

if the radius of a circle is 3cm and 5x+1 represents the length of the diameter how do i write an equation for x. i am in 7th grade ... Given, diameter = 2*radius, we can then set them equal to each other using this simple formula. Knowing that ... Find an Online Tutor Now. Choose an ... g(2)= 63-3x.

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1