What are the x-intercepts, rounded to the nearest tenth if necessary, of the function y = one-tenthx2 – 15? Check all that apply.

-12.2 and 12.2

Step-by-step explanation:

Since the function is a parabola, there will be two x-intercepts. If you put the function into a graphing calculator, the two x-intercepts are -12.247 and 12.247. If you round them both to the nearest tenth, you will get -12.2 and 12.2.

Check all that apply.

(–12.2, 0)

(12.2, 0)

The answer is A & E

Just did it : )

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".