ABCD is a rectangle. Its diagonals meet at O. Find the value of x if OA = 2x + 4 and OD = 3x + 1.

step by step explanation

x = 3

Step-by-step explanation:

The diagonals bisect each other and are congruent , then

OD = OA , that is

3x + 1 = 2x + 4 ( subtract 2x from both sides )

x + 1 = 4 ( subtract 1 from both sides )

x = 3

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

step-by-step explanation:

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation: