Answer:
75 degrees
Step-by-step explanation:
30 + 75 = 105
180 - 105 = 75
Answer: Degree of polynomial (highest degree) =4
Maximum possible terms =9
Number of terms in the product = 5
Step-by-step explanation:
A trinomial is a polynomial with 3 terms.
The given product of trinomial: 
By using distributive property: a(b+c+d)= ab+ac+ad

Maximum possible terms =9
Combine like terms

Hence, 
Degree of polynomial (highest degree) =4
Number of terms = 5
Answer:
y = 7
Step-by-step explanation:
The diagonals of a rectangle are congruent and bisect each other, then
AC = BD , that is
AE + EC = BD [ AE = EC = 6y ]
6y + 6y = 84
12y = 84 ( divide both sides by 12 )
y = 7
1,125 should be the answer they are right