<h3>
Answer: A) 6.7</h3>
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Work Shown:
Use the geometric mean formula to find that BD = 6
BD = geometric mean of AD and DC
BD = sqrt(AD*DC)
BD = sqrt(12*3)
BD = 6
Then use the pythagorean theorem to find the missing side for triangle BCD
a^2+b^2 = c^2
(CD)^2 + (BD)^2 = (BC)^2
3^2 + 6^2 = m^2
m^2 = 45
m = sqrt(45)
m = 6.70820393249937 approximately
m = 6.7 after rounding to one decimal place
The price before the discount was $81.00
Given;
Discounted price = $60.75
discount rate = 25%
Since the price is already discounted, it means that it is already 75% of the original price. So, we divided the discounted price by its corresponding percentage.
Original price - discount = discounted price
100% - 25% = 75%
$60.75 ÷ 75 % = $81.00
$81.00 * 25% = 20.25 discount
$81.00 - 20.25 = 60.75 discounted price
Answer:
12
Step-by-step explanation:
A = 
h
= 
· 3
= 12 ft
I hope this help
