Answer:
Step-by-step explanation:
x²/a² - y²/b² = 1
center (0,0)
vertex (3,0), so a = 3
focus (9,0)
e = 9/a = 3
directrices: x = ±a/e = ±1
They multiplied the 4's to get 16.
For the X part, 1 of the X's got cancelled out.
So like this:
X divided by X² would leave you with an extra X.
Answer:
15 g protein in 40 g bar has more protein/per g of bar
Step-by-step explanation:
15 g protein/ 40 g = 3/8 protein/g
20 g protein/ 60 g = 1/3 protein/g
We need to compare 3/8 and 1/3.
3/8 = 3*3/3*8 = 9/24
1/3 = 1*8/3*8 = 8/24
9/24 > 8/24, so 3/8 > 1/3