Answer:
perfect square sorry if wrong
Step-by-step explanation:
Answer:
3x^2 -2x + 1 =3(x^2-2/3x+1/3)=3(x-1/3)^2+2/9*3= 3(x-1/3)^2+2/3
(x-1/3)^2 is greater or equal to zero
3(x-1/3)^2 is greater or equal to zero
and 2/3 is greater than zero
So there sum is greater than zero
Proved
Step-by-step explanation:
3x^2 -2x + 1 =3(x^2-2/3x+1/3)
Consider x^2-2/3x+1/3
Remember that (a-b)^2 =a^2-2ab+b^2
x^2=a^2
a=x
-2/3x= -2*x*b
b=1/3
S0 (x-1/3)^2= x^2-2/3x+1/9
x^2-2/3x+1/3= x^2-2/3x+1/9+1/3-1/9= (x-1/3)^2+2/9
3x^2 -2x + 1 =3(x^2-2/3x+1/3)=3(x-1/3)^2+2/9*3= 3(x-1/3)^2+2/3
(x-1/3)^2 is greater or equal to zero
3(x-1/3)^2 is greater or equal to zero
and 2/3 is greater than zero
So there sum is greater than zero
Proved
In the case of
, we have
, so that
.
On the other hand, if
, then
. But this breaks the condition that
.
Answer:
Isha is 6 years old and her brother is 11 years old.
Step-by-step explanation:
x = Isha's age
y = Brother's age
y-5=x
(x+4)/(y+4) = 2/3
x = 6, y = 11
Isha is 6 years old and her brother is 11 years.
Answer:
Step-by-step explanation:
The formula for calculate the volume of a cylinder is:
r is the radius of the cylinder and h is the height of the cylinder.
Given the diameter of 3 inches, calculate the radius of the cylinder with:
(Where d is the diameter)
Knowing the height and the radius, you can calculate the volume of the entire can of tuna:
As you want to know the cubic inches of tuna that are in the can (volume of tuna), and you know that the can is half full, then: