A convex polyhedron has (8a) faces, (6a + 6) vertices, and (15a) edges. What is the value of a?

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

a =

The ruby throated hummingbird has a wingbeat of about 200 beats per second about how many wing Beats would a hummingbird have in three minutes.

If 2.5 inches equals 6 miles and your total is 16 inches how many miles

Is 2r - 3rt + 5t = 1 a linear equation? If so, put it in standard form.

Find the least common multiple of 3,4,5,6,10,15

Demetrious returned five library books last week, returned three books this week, then checked out 8 more books. He now has 12 library books. How many books did hehave before last week?

Estimate 9.7 times 3.3

Which statements are true? Select three options. The line x = 0 is perpendicular to the line y = 3.

2x=12 what is the answer i'm confused

Kathryn bought a magazine for $4 and five erasers. She spent a total of $14. How much did each eraser cost?

Factor Completely: x2 + 16