Answer:
number of servings = 1.5
Step-by-step explanation:
1 gallon = 16 Cups
cups of lemonade concentrate : lemonade servings
212 cups : 20 servings
How many servings can Mary make using 1 gallon of lemonade concentrate
Let
x = number of servings
cups of lemonade concentrate : lemonade servings
16 cups : x servings
Equate both ratios to get x
212 : 20 = 16 : x
212 / 20 = 16 / x
Cross product
212 * x = 20 * 16
212x = 320
x = 320 / 212
= 1.5094339622641
Approximately 1.5 servings
number of servings = 1.5
18.21 because 5.8 is the diameter and the formula of the circumference of a circle is C = πd. Pi is approximately 3.14 and when you multiply 3.14 by 5.8 you get 18.212 which rounds up to 18.21
X +15 = 4x
15 = 3x
x=5
Your present age is 5
Y=1/4x-2 would be the equation for the line perpendicular to that line and crosses through that ordered pair!
If you have a discount on an item..
ex. 15% off coupon for $20 shirt
20 x 0.15= $3 <--- 15% of 20
20-3=$17 <--- final price of shirt after coupon
