Question

What is the value of d to the nearest tenth?

Answer 1

`(14)/(16)=(20)/(d)`

`14d=16\cdot \:20`

Multiply 16 × 20

`14=320`

Now, Divide both sides by 14

`(14d)/(14)=(320)/(14)`

`d=22.9`

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Answer 2

d=13.8

Explanation:

secant-secant theorem: (a+b)b=(c+d)d

(14+20)14=(16+d)16

34*14=256+16d

476=256+16d

220=16d

d=13.75