R = 3(t+4) + 1

Hope it helps

**Answer:**

**Step-by-step explanation:**

The angles of a quadrilateral have to add up to equal 360. That means that

1x + 2x + 3x + 4x = 360 and

10x = 360 so

x = 36. Then

2x = 72 and

3x = 108 and

4x = 144

Angle A and angle D are opposite angles, as are angles B and C. This is because opposite angles are supplementary.

5/2=2 1/2 + 2/5 = 2.9 = 2 9/10

You have 1.63636363636...

0.63636363636... is the repeating part. The first term of 0.63636363636... is 0.63, and the common ratio is 1/100.

a

Thus, the sum of the terms of this series is ----------

1 - r

which in this problem comes to:

0.63 63/100

------------------ = ---------------- = 63/99 = 7/11

1 - 1/100 99/100

And so, 1.63333333 ... = 1 + 7/11 or **18/11**