15·0.8 + x = 30·0.9 --> x = 15
C. is the correct answer
Answer:
The correct awnser is A : )
Step-by-step explanation:
Answer:
(no solutions exist)
Step-by-step explanation:
Answer:
The height of the jumping hill x = 189.3 m
Step-by-step explanation:
From Δ ABC
AB = x = height of the hill
∠A = 36° , ∠B = 90°
Thus ∠C = 180 - ∠A - ∠B
⇒ ∠C = 180 - 36 - 90
⇒ ∠C = 54°
From Δ ABC


x = 0.809 × 234
x = 189.3 m
This is the height of the jumping hill.