Which statements are true?

if all angles of a quadrilateral are right angles, then the quadrilateral must be a square.

two shapes are similar if and only if their corresponding angles are equal.

all quadrilaterals have four sides, and the sum of all angles in a quadrilateral is 180°.

if the diagonals of a quadrilateral are perpendicular bisectors, then the quadrilateral must be a rhombus.

there are three vertices in a triangle, or there are four sides in a pentagon.

any two triangles are either similar or congruent.

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation:

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

step-by-step explanation:

formula

x = x1 + p/w(x2 - x1)

let the line segment ab with a(x1,y1) and b(x2,y2)

a point(x,y) divide ab in the ratio, 2: 3 the x coordinate can be written as

x = x1 + p/w(x2 - x1)

here p=2 and w = 2+3

therefore,

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

similarly y coordinate y = y1 + 2/5(y2 - y1)

answer: 1+1

step-by-step explanation: 1+1 is at least 2