Solve for x: 10x - 15 = 5x + 20 a. x = 15 b. x = 7 c. x = 0.3 d. x = 2.3

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

Someone me what is the area of this figure? 18m 18m 8m 16m

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20