See attachment for math work.
We must reject x = -3 because distance is positive.
The value of x is 3.
Chord = 2x
Chord = 2(3)
Chord = 6 cm
Answer:
Profit = $ 5
Step-by-step explanation:
Money spent on supplies = $ 20
Number of cups of lemonade sold by her = 100
Selling price for 1 cup of lemonade = 1 quarter = $ 0.25
∴ Selling price for 100 cups of lemonade = 
So, Christie can make $ 25 from 100 cups of lemonade.
Profit made by her = Selling price - Money spent on supplied
= $ 25 - $ 20 = $ 5.
Faces-3. Edges-2. Vertices-0
Answer:
$20.60
Step-by-step explanation:
Price before discount = $21
Discount rate = 10% or 0.1
Discount in dollars = 0.1* 21 = $2.1
Price after discount = $21 -$2.1 = <em>$18.90</em>
If sales tax is 9% or 0.09
amount of tax will be = 0.09 * 18.90 = <em>$1.701</em>
Total price of the phone including taxes = Price before tax + tax amount;
Total price = 18.90 +1.701
= 20.601
Therefore total price will be $20.60