The discount would be $77.5 as 310 divided by .25 is 77.5.
Answer:
<em>You should deposit 700 pieces today if you want to use the total amount to pay the fees.</em>
Step-by-step explanation:
Suppose, you should deposit number of pieces today.
<u>Formula for simple interest</u>: , where I = Amount of interest, P= Initial deposit amount, r= rate of interest in decimal form and t= time duration.
Here, the number of pieces is deposited at an annual interest rate of 10% for three years. That means, and
Using the above formula, we will get.......
Given that, <u>you need total 910 pieces </u>of muggle-money to study after three years. So, the equation will be......
So, you should deposit 700 pieces today if you want to use the total amount to pay the fees.
Answer:
Step-by-step explanation:
Given : focus of (1, -3) and a directrix of y= -1
The distance between focus and directrix is 2p
The distance between (1,-3) and y=-1 is 2
So 2p = 2 and p =1
Vertex (h,k) lies inbetween the focus and directrix
focus is (h, k-p)
given focus is (1,-3)
so h=1 and k-p = -3 ( we got p =1)
So k-1= -3 , k= -2
Hence, vertex is (1,-2), h=1 and k = -2
Here focus at the bottom and directrix at the top
so parabola opens down
hence a= -1/4
Plug it in the equation