If 2�+6=182x+6=18, what is the value of �x?

Express 0.4 as a fraction in simplest form.

If a circle has an arc of 60∘60∘ and a radius of 8 units, what is the length of the arc?

What is the product of the first 6 prime numbers?

If 3�+6=213k+6=21, what is the value of �k?

If a triangle has sides of lengths 3, 4, and 5 units, what type of triangle is it?

The volume of a rectangular prism is 6060 cubic units, and its dimensions are 3×4×53×4×5. What is its surface area?

If a trapezoid has one base of length 6 units, another base of length 10 units, and a height of 8 units, what is its area?

If a box contains 5 red balls, 3 blue balls, and 4 green balls, what fraction represents the probability of picking a blue ball randomly?

What is the median of the following set of numbers: 12, 8, 5, 16, 20?