the is a duck in front of two ducks, a duck behind two ducks, and a duck between two ducks. what is the least number of ducks that there could be in this group?

Step-by-step explanation:

Three I think.

Donald x  x

X   X   Donald

X Donald X

3

Step-by-step explanation:

The ducks would be in a single file line.

1 duck in front of the two ducks in a line.

1 duck behind the two ducks in the straight line.

Since there are 3 ducks in a straight single line, the duck in the middle would be between 2 ducks.

X

X

X

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form

x= 3^y

step-by-step explanation: