Question

Can someone help?

solve for x, using the secant lines
10cm, 7cm, 7cm. round to the nearest tenth

Answer 1

x = 4.9

Solution:

We can use the intersecting chords formula:

• 
  `\text{(segment piece) x (segment piece) = (segment piece) x (segment piece)}`

`7*7 = 10x`

`49 = 10x`

• Divide each side by 10

`49/10=10x/10`

`4.9 = x`

Therefore, x = 4.9.