A spinner is divided into four equal sections numbered 1 through 4. What is the expected value of spinning the spinner? O A. 2 O B. 2.5 о с. 4 O D. 9 What is the value of x? Which of the following is not sufficient additional information to prove AHGJ = AMLK? 18, 24 H 2x + 2 3x +1 M G A. 5 K O B. 8 O A. HJ = MK о с. 11 B. LG = LL O D. 12 O C. LJ 2 ZK GJ = LK What is m CD ? 78° B A M 106 O A 92° B. 106° C. 134 D. 1184°

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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### Probability and Geometry Problems

Welcome to our educational resources. Below we provide various mathematical problems and their detailed graphical representations to aid in understanding key concepts.

#### Problem 1: Expected Value of a Spinner

A spinner is divided into four equal sections numbered 1 through 4. What is the expected value of spinning the spinner?

Options:
- A. 2
- B. 2.5
- C. 4
- D. 9

---

#### Problem 2: Proving Triangle Congruence

**Problem:** Which of the following is not sufficient additional information to prove \(\triangle HGJ \cong \triangle MLK\)?

**Diagram Explanation:**
- There are two triangles \(\triangle HGJ\) and \(\triangle MLK\) given.
- \(H\) and \(M\) are right angles.
- \(H\) and \(M\) are positioned as right angles on the corresponding triangles.

Options:
- A. \( \overline{HJ} \cong \overline{MK} \)
- B. \( \angle LG \cong \angle L \)
- C. \( \angle J \cong \angle K \)
- D. \( \overline{GJ} \cong \overline{LK} \)

---

#### Problem 3: Solving for \(x\)

**Problem:** What is the value of \(x\)?

**Diagram Explanation:**
- Given triangle \( \triangle HJK \):
  - Side lengths and angles are annotated.
  - \(HJ = 18\)
  - \(JK = 24\)
  - \(GL = 2x + 2\) and \(KL = 3x + 1\)

Options:
- A. 5
- B. 8
- C. 11
- D. 12

---

#### Problem 4: Circle Angle Problem

**Problem:** What is \( m \overarc{CD} \)?

**Diagram Explanation:**
- A circle with various labeled points (A, B, C, D) and intersecting lines.
  - \( \angle AMB = 78^\circ \)
  - \( \angle AMC = 106^\circ \)

Options:
- A. \(92^\circ\)
- B. \(106^\circ\)
- C. \(134^\circ\)
- D. \(
Transcribed Image Text:### Probability and Geometry Problems Welcome to our educational resources. Below we provide various mathematical problems and their detailed graphical representations to aid in understanding key concepts. #### Problem 1: Expected Value of a Spinner A spinner is divided into four equal sections numbered 1 through 4. What is the expected value of spinning the spinner? Options: - A. 2 - B. 2.5 - C. 4 - D. 9 --- #### Problem 2: Proving Triangle Congruence **Problem:** Which of the following is not sufficient additional information to prove \(\triangle HGJ \cong \triangle MLK\)? **Diagram Explanation:** - There are two triangles \(\triangle HGJ\) and \(\triangle MLK\) given. - \(H\) and \(M\) are right angles. - \(H\) and \(M\) are positioned as right angles on the corresponding triangles. Options: - A. \( \overline{HJ} \cong \overline{MK} \) - B. \( \angle LG \cong \angle L \) - C. \( \angle J \cong \angle K \) - D. \( \overline{GJ} \cong \overline{LK} \) --- #### Problem 3: Solving for \(x\) **Problem:** What is the value of \(x\)? **Diagram Explanation:** - Given triangle \( \triangle HJK \): - Side lengths and angles are annotated. - \(HJ = 18\) - \(JK = 24\) - \(GL = 2x + 2\) and \(KL = 3x + 1\) Options: - A. 5 - B. 8 - C. 11 - D. 12 --- #### Problem 4: Circle Angle Problem **Problem:** What is \( m \overarc{CD} \)? **Diagram Explanation:** - A circle with various labeled points (A, B, C, D) and intersecting lines. - \( \angle AMB = 78^\circ \) - \( \angle AMC = 106^\circ \) Options: - A. \(92^\circ\) - B. \(106^\circ\) - C. \(134^\circ\) - D. \(
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