Who was the first prince of Russia to be crowned as a czar

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

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

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project