How many different triangles, if any, can be drawn with side lengths of 2 cm, 4 cm, and 7 cm?

                                                                                                                        None of them.

None.

Step-by-step explanation:

None, because in any triangle any side must be less than the sum of the other 2 sides.

Here one side length 7 is greater than 4 +2  so a triangle cannot be formed.

answer: standard form is ax^2 + bx + c = 0

step-by-step explanation:

standard form is ax^2 + bx + c = 0

(2x + 1)(x - 2) = 0

distribute to get into standard form

2x^2 - 4x + x - 2 = 0

2x^2 - 3x - 2 = 0

a = 2, b= -3, c = -2

a is your answer

its the second choice.

step-by-step explanation:

the elements in the range will be 7 less than the elements in the domain.