In the right triangle, ac = bc = 2. what is ab?

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

Which value would be a solution for x in the inequality 47-4x< 7