Answer:
at x = -7 it will cross over
Step-by-step explanation:
Roots -4 and -7
the power of 6 means the graph will not crossover (it will be positive...kinda like a parabola)
the power of 5 means there will be a negative component of the graph and it will cross over the axis
B = x
A = x - 1
C = x + 1
the product .....this means multiply
(x)(x - 1)(x + 1) =
x(x^2 - 1) =
x^3 - x <====
1)
a) nr. tau este divizibil cu c.m.m.m.m.c al nr. 3, 6 si 10, care este 30 ;
Cel mai mic nr. natural nenul care se divide cu 30 este 30 ;
b) asemanator,nr. tau este 360 ;
2) 18 chibrituri ;
3) La treaba cu dreptunghiurile ai nevoie de 5 bete de chibrituri ;
Te gandesti tu la cele 15 triunghiuri !
Bafta !
Answer:
<u>The length of the garden is 80 ft and the width is 30 ft</u>
Step-by-step explanation:
1. Let's review the information provided to us to answer the math problem correctly:
Area of the rectangular plot = 2,400 ft²
Perimeter of the rectangular plot = 220 ft
2. What is the length and width of the garden?
x = Length of the garden
y = Width of the garden
Now, we can write our equations system to solve for x and y, as follows:
xy = 2,400
2x + 2y = 220
*********************
2x + 2y = 220
2x = 220 - 2y
x = 110 - y
********************
Substituting x and solving for y:
(110 -y) * y = 2,400
110y - y² = 2,400
-y² + 110y - 2,400 = 0
y² - 110y + 2,400 = 0
(y - 80) (y - 30) = 0
y₁ = y - 80 = 0 ⇒ y₁ = 80
y₂ = y - 30 = 0 ⇒ y₂ = 30
If y = 30 ⇒ x = 80 and if y = 80 ⇒ x = 30