Responder:
2 1/4 m; 225 cm
Explicación paso a paso:
Dado:
Cortar 9 metros en 4 partes de la misma longitud;
Por lo tanto,
9 metros / 4
= 2,25 metros
Por lo tanto, cada varilla será 2.25 = 2 1/4 m
En cm;
1 m = 100 cm
2,25 metros = x
x = 100 * 2,25
x = 225 cm
2nd degree and in form
ax^2+bx+c
it is a prabola
the minimum cost is the vertex (every parabola has only one, min or max)
minimum cost is the vertex
vertex=-b/(2a)
a=0.4
b=-208
vertex=-(-208)/(2*0.4)
vertex=208/0.8
vertex=260 (means 260 dresses)
that is x value
subsitute for y value
C(x)=0.4(260)^2-208(260)+37365
C(x)=10325
minimum cost is $10,325
QUESTION 1i)
The given equation passes through
(3,11) and (-2,1).
The slope of the line is


The equation is given by

We can use any of the given points.



The equation is

QUESTION 1ii)
A point that lies on this line must satisfy the equation of this line.
We can choose any value for x and substitute to find the corresponding y-value.
When x=0,

Therefore, the point (0,5) lies on this line.
QUESTION 1iii)
The point (0,6) does not lie on this line.
We can verify this by substituting (0,6) into the equation of the line.


This statement is false.
QUESTION 2
The line passes through, (0,4) and (2,0).
The slope of this line is

The equation of this line is


We substitute the point (-25,81) to determine whether this point lies on this line.


This is a false statement.
The point (-25,81) does not lie on this line.
To simply the answer, you must find a number that is common between the numerator and denominator. 5 is a common number between the two.
15/10÷5=3/2
The answer in a smaller form is 3/2.
183.26 times .25 = 45.815
183.26 minus 45.815 = 137.445
137.445 times 0.09 = 12.37005
137.445 plus 12.37005 = 149.81505
Which =149.82 rounded