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sandy701
22.04.2020 •
Mathematics
In a circle, a chord of 50 cm bisects a chord of 40 cm. Find the length of the longer segment of the 50 cm chord.
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Ответ:
The length of the longer segment of the 50 cm chord = 40
Step-by-step explanation:
let the length of the longer segment of the 50 cm chord = x
so, the other segment = 50 - x
A chord of 50 cm bisects a chord of 40 cm
using the Intersecting Chords Theorem
so, x(50-x) = 20 * 20
50x - x² = 400
x² - 50x + 400 = 0
(x - 40)(x - 10) = 0
x = 40 or x = 10
So, the the length of the longer segment of the 50 cm chord = 40
Ответ:
$53.50
step-by-step explanation:
you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).
72.50-11.25=61.25
and then subtract $61.25 by the second thing he bought (the new string for the trimmer)
61.25-7.75=53.5
so in total it's $53.50 (53 dollars and 50 cents)