Answer:
x = 5.
Step-by-step explanation:
2x^2 + 1x + 2 = 57
2x^2 + x - 55 = 0
(2x +11)(x - 5) = 0
x = 5.
Answer:
G
Step-by-step explanation:
Answer:
option D is correct.
Step-by-step explanation:
The real number y=a is the root of the polynomial f(y) if and only if
f(a) =0
So, when we see a graph of the polynomial, the x-intercepts are the real roots of the graph f(y)
We can find x-intercept of graph, by looking at the graph and finding out points that touch the x-axis on the graph.
In the graph given the points -6 and 2 touch the x-axis of the graph, So these are the real roots of the graph.
So, option D is correct.
In this question, it is given that two of the dimensions are 3 cm and 9 cm . Let the other dimension be x cm .
And the surface area of the rectangular prism is given. Now we use the formula of surface area of prism, which is
Subtracting 27 to both sides,
Dividing both sides by 12
So the length of the remaining dimension is 6 cm .
Answer:
7z
Step-by-step explanation:
4z-(-3z)
4z+3z->double neg=addition
7z