Math Problem Statement

Brenard earned a Boy Scouts patch in the shape of a right triangle. Using the formula A = 1/2 * b * h, what is the area of the patch? The base is (6x + 7) and the height is (4x + 2).

Solution

To solve this problem, we use the formula for the area of a triangle:

A=12bhA = \frac{1}{2} \cdot b \cdot h

Where:

  • bb is the base of the triangle.
  • hh is the height of the triangle.

From the image:

  • The base (bb) is labeled as 6x+76x + 7.
  • The height (hh) is labeled as 4x+24x + 2.

Step 1: Multiply the base and the height.

bh=(6x+7)(4x+2)b \cdot h = (6x + 7)(4x + 2)

Using distributive property: (6x+7)(4x+2)=24x2+12x+28x+14=24x2+40x+14(6x + 7)(4x + 2) = 24x^2 + 12x + 28x + 14 = 24x^2 + 40x + 14

Step 2: Apply the formula for the area.

A=12(24x2+40x+14)A = \frac{1}{2} \cdot (24x^2 + 40x + 14)

Distribute the 12\frac{1}{2}: A=12x2+20x+7A = 12x^2 + 20x + 7

Final Answer:

The area of the patch is: A=12x2+20x+7A = 12x^2 + 20x + 7

Matching the Correct Values:

The terms to move to the boxes are:

  1. 12x212x^2
  2. 20x20x
  3. 77

Let me know if you'd like further clarification or details! Here are some related questions for practice:

  1. What is the distributive property, and how is it used in algebra?
  2. Why do we divide by 22 when calculating the area of a triangle?
  3. How do you simplify algebraic expressions with multiple terms?
  4. What are the rules for multiplying polynomials?
  5. How can this formula be applied to triangles of different orientations?

Tip: Always check that the units or variables in an equation are consistent before solving.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Geometry
Algebra
Distributive Property
Polynomial Multiplication

Formulas

Area of a triangle: A = 1/2 * b * h

Theorems

-

Suitable Grade Level

Grades 7-9