How many possible arrangements are there in the letters of the word fred

24

Step-by-step explanation:

Basically, the first thing you do is figure out how many letter are in the word FRED.

There are 4 letters

Now, you need to make a multiplication expression

To do this, you start with how ever many letters you have, FOUR

Then the rest of the numbers are counting down from there.

Hence: 4*3*2*1=24

3

step-by-step explanation:

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: