The image you've uploaded shows a triangle with some given dimensions and a variable $x$. The triangle appears to be divided into two smaller right triangles with the lengths of the legs and the hypotenuse given.

Step-by-Step Solution:

1. Identify the Relationship: The larger triangle is split into two smaller right triangles by a height. The bottom base of the larger triangle is $x + 2$ and the total length of the base is 10. This means the left segment of the base is $10 - (x+2) = 8 - x$.

2. Set Up the Equation: The triangles are similar due to their shared angle and the right angle. Therefore, their corresponding sides are proportional. We can use the smaller triangle with the base $8-x$ and hypotenuse 4, and the larger triangle with the base $10$ and hypotenuse 4 + 3 = 7.

3. Apply the Proportion: $\frac{4}{7} = \frac{8-x}{10}$ Here, we equate the ratios of the hypotenuses to the bases.

4. Solve for $x$: $4 \times 10 = 7 \times (8 - x)$ $40 = 56 - 7x$ $7x = 56 - 40$ $7x = 16$ $x = \frac{16}{7}$ $x \approx 2.29$

So, $x$ is approximately $2.29$.

Would you like a more detailed explanation or have any other questions about this problem? Here are some related questions to consider:

1. What are the angles of the larger triangle?
2. How would the equation change if the dimensions of the triangle were different?
3. Can this problem be solved using trigonometric ratios?
4. What are the properties of similar triangles used in this problem?
5. How does the Pythagorean theorem apply to each of the smaller triangles within the larger triangle?

Tip: Always double-check which sides correspond when setting up proportions with similar triangles.