Question

Use the image to answer the question. solve it and tell me which answer is true

A triangle upper A upper B upper C. The edge upper A upper B is labeled c. The edge upper A upper C is labeled b. The edge upper B upper C is labeled a.

(Diagram is not to scale.)

In the diagram, Amanda lives at A
, Chad lives at C
, and B
represents the baseball diamond. Amanda tells Chad she walks 2,200 ft. to the baseball diamond. Chad says he only walks 1,320 ft., so she should come to his house and walk with him. What is a possible distance from Amanda’s (A)
to Chad’s (C)
?

(1 point)
Responses

4,400 ft.
4,400 ft.

1,040 ft.
1,040 ft.

880 ft.
880 ft.

3,520 ft.
3,520 ft.
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1 answer

To determine a possible distance from Amanda's (A) to Chad's (C) based on the triangle inequality theorem, we need to recognize that for any triangle with sides a, b, and c:

  1. \( a + b > c \)
  2. \( a + c > b \)
  3. \( b + c > a \)

In the context of this problem, let:

  • Side \( AC = c \) (distance from Amanda to Chad)
  • Side \( AB = b = 2,200 \) ft (distance from Amanda to the baseball diamond)
  • Side \( BC = a = 1,320 \) ft (distance from Chad to the baseball diamond)

We can use the triangle inequalities to solve for \( AC \) (the distance between Amanda and Chad) as follows:

Apply the triangle inequalities:

  1. From \( a + b > c \):

    • \( 1,320 + 2,200 > AC \)
    • \( 3,520 > AC \)
    • So, \( AC < 3,520 \) ft.
  2. From \( a + c > b \):

    • \( 1,320 + AC > 2,200 \)
    • \( AC > 2,200 - 1,320 \)
    • \( AC > 880 \) ft.
  3. From \( b + c > a \):

    • \( 2,200 + AC > 1,320 \)
    • This inequality will always be true for positive distances since \( 2,200 \) ft is already greater than \( 1,320 \) ft.

Summary of findings:

From the inequalities, we found:

  • \( AC > 880 \) ft.
  • \( AC < 3,520 \) ft.

Evaluate the options:

Now we can evaluate the options:

  1. 4,400 ft: Too large (not valid).
  2. 1,040 ft: Valid (between 880 ft and 3,520 ft).
  3. 880 ft: Not valid (it must be greater than 880 ft).
  4. 3,520 ft: Not valid (it must be less than 3,520 ft).

Conclusion:

The only valid option between Amanda and Chad is 1,040 ft. Hence, the correct answer is 1,040 ft.