Answer:
is standard equation of hyperbola with vertices at (0, ±9) and foci at (0, ±11).
Step-by-step explanation:
We have given the vertices at (0, ±9) and foci at (0, ±11).
Let (0,±a) = (0,±9) and (0,±c) = (0,±11)
The standard equation of parabola is:
From statement, a = 9
c² = a²+b²
(11)² = (9)²+b²
121-81 = b²
40 = b²
Putting the value of a² and b² in standard equation of parabola, we have
which is the answer.
Answer:
Step-by-step explanation:
<em>Note. It should read 3/4 of an inch.</em>
- 3/4 in = 3 miles
- x in = 25 miles
<u>Cross multiply and solve for x:</u>
Answer:
I think the answer is b or c
Answer:
Eggs: 25 cents ea.
Pounds of peanuts: $2.50 ea.
Rolls of toilet paper: 50 cents ea.
Apples: 35 cents ea.
Step-by-step explanation:
This is assuming you meant $3 for 12 eggs, and $2 for 4 rolls of toilet paper.
For the eggs, I did 3 / 12 = .25 (aka 25 cents);
For the peanuts: 7.50 / 3 = $2.50;
For the toilet paper: 2 / 4 = .50 (aka 50 cents);
For the apples: 3.50 / 10 = .35 (aka 35 cents).
Hope this helped ~
:D
