You own 500 shares of stock a at a price of $75 per share, 650 shares of stock b at $90 per share, and 350 shares of stock c at $36 per share. the betas for the stocks are 1.4, 1.3, and 0.7, respectively. what is the beta of your portfolio?

Beta of your portfolio is 1.26

Explanation:

Please find the attached excel file with the explanation.

a.   is the correct choice.

good luck. : )

bd = 9 cm

step-by-step explanation:

in a 30°-60°-90° triangle, the ratio of side lengths is 1 : √3 : 2. that is, the longest side (hypotenuse) is twice the length of the shortest side.

all of the triangles in your geometry are 30°-60°-90° triangles. ac is the hypotenuse of δacd, and the short side of δabc.

the short side ad of δacd will be half the length of ac, so 3 cm. the hypotenuse ab of δabc will be twice the length of ac, so 12 cm. segment bd is the difference of the lengths ab and ad, so is

bd = ab -ad

bd = 12 cm - 3 cm = 9 cm

comment on side length ratios

you can figure the ratios of side lengths in a 30°-60°-90° triangle by considering the trig ratios of the angles. or you can figure the length of the altitude of an equilateral triangle of side length 2 using the pythagorean theorem.