A convex polyhedron has (9a - 1) faces, (8a) vertices, and (16a) edges. What is the value of a?

Euler's formula: V + F = E + 2

a=?

If you can make a gadget for 5.00 and you want to make a profit of 300% what would be the price you would have to sell it for? How much would you make on each?

If the area of a circle is 24.5cm^2, what is the circumference?

If f (x) = 3x + 7, find: f (3) = [? ]

Adele works at an appliance store. She recently sold 18 appliances, 2 of which were ovens. What is the experimental probability that the next appliance Adele sells will be an oven? Simplify your answer and write it as a fraction or whole number.

A local restaurant purchased 45 pounds of flour at a total cost of $38.25. Determine the unit cost per pound

Giant Department Stores, Inc. purchased bedroom curtains from The Linen Company for $6.19. The markup was $4.20. What was the selling price to the nearest cent?

If you were to sort 0.8, 1/4,.08, 8/10, what would be the order they would be in (smallest to biggest) ?

A regular polygon has all sides of equal length and all angles of equal measure. Which shapes below are subcategones regular polygons? Explain?

Whats does "mean" mean in math

If you take a number, times by 3 then subtract 6. You get the same as if you took the number, times by 7 then subtract 2. What is the number?