Help please asap Jodi and Mariah are sisters. Jodi is three years older than Mariah. Using one variable, write an expression to represent the sum of their ages. Make sure to explain what your variable represents.​

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Circle d circumscribes abc and abe. which statements about the triangles are true? statement i: the perpendicular bisectors of abc intersect at the same point as those of abe. statement ii: the distance from c to d is the same as the distance from d to e. statement iii: bisects cde. statement iv: the angle bisectors of abc intersect at the same point as those of abe. a. i only b. i and ii c. ii and iv d. i and iii e. iii and iv

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8