An expression must have a monomial of degree 2 or higher to be a polynomial.

a. true
b. false

True - depends on context

Step-by-step explanation:

Polynomial means "many terms' and must have 2 or more terms which includes binomials. If this is true, then the expression is false because x+2 is a polynomial specifically binomial without degree 2. This is because we applied the definition of a polynomial loosely.

However, in terms of functions and with s stricter definition then polynomials are expressions with degree 2 or higher usually with 3 or more terms. Then it is true.

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh