Luke has $5.50 in quarters and dimes. The number of dimes is 3 times the number of quarters. How many of each coin does Luke have?

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

What is sin 7x/4 ? i need on this urgent trig

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.