jugoslav

5x = 3.5 * 13

x = 9.1        AB = 16.5          CD = 14.1

A line passes through A(3, 7), and B(-4, 9). Find the value of a if C(a, 1) is on the line.

a = (7 - 1) / arctan(2 / 7) + 3 = 24

1. For a triangle XYZ, we use [XYZ] to denote its area.

Let ABCD be a square with side length 1. Points E and F lie on line BC and line CD, respectively, in such a way that angle EAF=45 degrees If [CEF]=1/9, what is the value of [AEF]?

[AEF] = 4/9

(3x + 47) + (x + 26) = (27 + x) + 10

3x = - 36

x = - 12

CE = x + 26

CE = - 12 + 26 = 14

Angle EBC = n / 6

Suggested answers are ridiculous. Why not these numbers: 11, 12, 13, 14, 15...

draw a perpendicular line from point B to line L₁

now we have a quadrillateral with 3 known angles: 135-90-60 degrees

angle x = 360 -135-90-60 = 75 degrees

ABCD is a parallelogram. E is a point on AB such that AE:EB = 1:2, F is the mid-point of CD. AF meets DE at G and BF meets CE at H. When expanded on both sides, GH meets AD at M and BC at N. If the area of ABCD is 420, find the sum of the areas of the triangles ∆CNH and ∆DGM.

The sum of the areas of the triangles ∆CNH and ∆DGM is 48 u²

How can it be 735 if the area of a whole parallelogram is 420 units squared?!?

4x = 78 + 14