If B =- 2t + 1 and A=t+ 9, find an expression that equals 2B + 2 A in
standard form.

homozygous. one is homozygous, while two is heterozygous.

60

step-by-step explanation:

every triangle measures a total of 120 degrees. you have to find angle c. we know that isosceles triangles angles are equal. 60 degrees plus 60 degrees gives you 120.

probably the last option

step-by-step explanation:

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.