Consider triangle WBG, where points W, B and G represent Weather Station, Balloon and Ground, respectively. This triangle is right with right angle at vertex G. The legs of this triangle are GB and GW, the hypotenuse is BW.
From the question you know that GB=4 km and GW=1 km. By the Pythagorean theorem,

Answer: nearly 4.123 km
The beta of the portfolio is the weighted average of the individual asset betas where
the weights are the portfolio weights.
To get portfolio beta we will replace 1 stock of 20 or 5% of the portfolio.
The other
stocks are 95% of the portfolio.
1.12 =0.95 ( b )+0.05*1
b= 1.126316
So not when we replace one and get other stock
Portfolio beta =0.95*1.126316 + 0.05*1.75=1.1575
Answer:
=
Step-by-step explanation:
1 foot = 12 inches
1 yard = 3 feet
1 yard = 12×3 = 30 inches
30+11 inches = 47 inches
The difference between the means is about 5 times