Answer:
d
Step-by-step explanation:
Since DF = EF then the triangle is isosceles with base angle being congruent, that is
∠ D = ∠ E , then
∠ D =
=
= 23.5°
Fourth test mark should be 86
85 + 82 + 75 + 86 = 328
328 divide by 4 (as there are four tests) = 82
Answer:

Step-by-step explanation:


Answer:
(0,−2/9+1/3)
Step-by-step explanation:
simplified (0, 7/12)
Answer:
12/7 or E
Step-by-step explanation: