What is m∠RST?

I need help on this please thank youuu

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)