How do I write a compelling business plan?

I'm starting a new business and need help structuring my business plan. What sections should I include and what makes a plan compelling to investors?

Can you help me understand matrix multiplication?

I'm taking linear algebra and I'm confused about matrix multiplication. When is it possible and how do I do it step by step?

What are the main causes of World War I?

I'm writing an essay about WWI and need help understanding the complex causes that led to the war. Can someone explain the main factors?

How do I balance chemical equations?

I'm struggling with balancing chemical equations in my chemistry class. Can someone explain the process and provide some practice examples?

What is object-oriented programming and why is it important?

I'm new to programming and keep hearing about OOP. Can someone explain the main concepts like classes, objects, inheritance, and polymorphism?