13. How many pattern block
triangles would Willis use to
make a model of a triangle
with 3 rows?
H 4
B 5
C 7
D 9

(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180

ask i dont know either ; (

step-by-step explanation:

(f+g)(x) = 3^x+10x+4x-2

      =3^x +14x-2

choice b