Answer:
If it is direct proportionality, then y = kx where k is a constant. Use the given information to find k:
8 = k(12) ⇒ k = 8/12 = 2/3
y = (2/3) x
For y = 12,
12 = (2/3) x ⇒ x = (3/2)*12 = 18
x = 18 when y = 12
I hope this helps a little bit.
My school allows a calculator
Answer:
a) distance from plane to swimmer = 2127.66 m
b) distance from swimmer to point D = 1928.31 m
Step-by-step explanation:
Given the question,
height at which the plane is = 900m
angle of depression = 25°
If we closely observe, the whole scene is making an right angle triangle
So, we can use trigonometry identities
<h3>a)</h3><h3>cosФ = BD / AB</h3>
cos (90-25) = 900 / AB
0.423 = 900 /AB
AB = 2127.66 m
<h3>b)</h3><h3>sinФ = AD/AB</h3>
sin(90-25) = AD /2127.66
AD = sin(90-25) x 2127.66
AD = 1928.31m
<span> for the cm units you would need to multiply by .01 to convert it to meters than multiply the time unit by (1/60) to change from seconds to minutes.
so the answer is </span><span>0.01/1cm and 1min/60sec </span>