Answer:
k=2.5
Step-by-step explanation:
Constant of Proportionality is k=y/x
k = 10/4 = 2.5
Answer: 9/49
3/49. it doesn't simplify more, unless you're looking for the decimal value.
Answer: 
Step-by-step explanation:
Given: ∠H ≅∠L and line HJ congruent to Line JL.
Since, In triangles HIJ and LKJ,
∠H ≅ ∠L
HJ ≅ JL
And, ∠HJI ≅ ∠ LJK
Therefore, By ASA postulate,
Δ HIJ ≅ Δ LKJ
This is why Option first is correct.
Note: Option third ΔHIJ≅ΔJKL is not correct,
Because, HI≠JK
Answer:
6.11 seconds
Step-by-step explanation:
Given

Required
When will it hit the ground?
When it hits the ground, f(t) = 0.
So, we have:

Solve quadratic equation using formula




Split
or 
or 
or 
Time can not be negative. So:
