Answer:
D = 90°
Step-by-step explanation:
the square on the angle means its a right angle and right angle is always 90°
It is 3 1/8 because 9.2 is a decimal and a fraction is 3 1/8 and a mixed fraction is 3 7/8
2/3 +4/3=6/3=2.... Self explanatory
Answer:
19
Step-by-step explanation
Let the sum of n terms of A.P. = Sn