Answer: x=-3 or x=-5
(2x^2 + 8x -10)\( 2x^2 + 14x + 20)=4
2x^2 + 8x -10=( 2x^2 + 14x + 20)×4
2x^2 + 8x -10=8x^2 + 56x + 80
8x^2 + 56x + 80-(2x^2 + 8x -10)=0
8x^2 + 56x + 80-2x^2 - 8x +10=0
6x^2 +48x +90=0
6(x^2 +8x +15)=0
x^2 +8x +15=0
(x+3)(x+5)=0
(x+3)=0 or (x+5)=0
x=-3 or x=-5
<u>Answer:</u>
Stanley factored it correctly.
<u>Step-by-step explanation:</u>
We are given that Marie and Staley factored the above expression as follows and we are to determine who factored it correctly:
Marie: --->
= so this is wrong.
Stanley: --->
=
Therefore, Stanley factored it correctly.
So these are basically isolating the variables.
The first equation is 3g + 5 =17.
In order to isolate the variable, we would have to get g by itself, that means 5 would have to go. In order to do this, we would do the opposite. Since it is positive 5 we would add negative 5, in order for it to disappear. This works because a positive 5 and negative 5 cancel each other out. Whatever you do to one side of the equation you have to do to the other, since we subtract 5 on one side we have to subtract 5 on the other. Therefore we would do 17-5.
Now we have 3g=12
We know that 3g is basically 3 multiplied by g. The opposite of multiplication is division.Therefore we would divide by 3 on both sides.
The answer to the first question would be g= 4.
And if you want to check if your answer is correct you plug the value in.
So
3(4) + 5 =17
Answer:
El continente que se considera poco poblado debido a que su población ocupa menos de la mitad de su territorio es AMÉRICA.
Aunque no lo pareciera tenemos que el continente americano es considerado como poco poblado, pero esto es por la distribución de las sociedades que por falta de población.
La distribución de los pueblos americanos es bastante ortodoxa y esto ha hecho que las poblaciones se concentren en sitios y que ocupen menos territorio en el continente. Ademas, hay que tomar en cuenta que existe muchos territorios naturales que no se pueden poblar por ejemplo la amazonia.
Step-by-step explanation:
Answer:
=-26
Step-by-step explanation:
f(n) = 7n – 5
Let n = -3
f(-3) = 7*(-3) – 5
Multiply first
= -21-5
=-26