An advertising banner has four sections, as modeled below. Two sections are congruent trapezoids, and two sections are congruent right triangles. Which measurement is the best estimate of the area of the banner in square meters.

The best estimate is

Step-by-step explanation:

Given

See attachment for banner

Required

Estimate of the area

The banner has two congruent trapezoids and two congruent.

This means that, the two trapezoids have the same base lengths; the two triangles also have the same base lengths

So, we have:

-- base lengths of both trapezoids

-- base lengths of both triangles

The banner itself is a triangle and the dimension is:

So, the area is:

The question asks for an estimate. So, we approximate.

757764

step-by-step explanation:

de77737dd

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15