1. a polyhedron has 6 vertices and 9 edges. how many faces does it have?
a. 3
b. 5
c. 7
d. 9
2. a polyhedron has 25 faces and 36 edges. how many vertices does it have?
a. 11
b. 12
c. 13
d. 14

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?