Abd is a right angled triangle so by pythagoras we know

and to calculate h we need to use the sine rule

i hope this helps
Answer:
205 years
Step-by-step explanation:
E=68 years
C=E+17=68+17=85 years
D=E-16=68-16=52 years
Total=E+C+D=68+85+52=205 years
Answer:
B
Step-by-step explanation:
- 2 | 2 2 - 2 4
↓ - 4 4 - 4
--------------------------
2 - 2 2 0 ← remainder
Since the remainder = 0 then (x + 2) is a factor
quotient = 2x² - 2x + 2
Answer:
h = 7.333....
Step-by-step explanation:
Formula is A = 1/2h(b1+b2)
Area 77 determine the height
77=1/2h(14+8)
77 = 1/2h(22)h
77/10.5 = 10.5h/1.5
solve for h = 7.333....