Answer:
E
Step-by-step explanation:
2^2 = 4
√(4^2 + √5 ^2) = √21
Answer:
1.5 hours to 525 km
Speed in km/h=

Step-by-step explanation:
XD
Answer:
1). x = 81
2). x = 84
Step-by-step explanation:
1). By applying geometric mean theorem in the given triangle,

56x = (18√14)²
56x = 4536
x = 
x = 81
2). By applying geometric mean theorem,

16x = (8√21)²
16x = 1344
x = 
x = 84