Against his financial advisor’s advice, frank has decided to invest his money in some risky stocks because he once made quite a bit of money in the stock market. his decision illustrates
a.
the representativeness heuristic
b.
overconfidence
c.
the availability heuristic
d.
confirmation bias

I believe the answer is: representativeness heuristic

representativeness heuristic refers to the act of making judgement about a certain probability under uncertain situation. Representativeness heuristic often being done when investors want to accumulate wealth in the fastest way possible, even though the risk of losing all their wealth become larger.

angle a = 40.6°

step-by-step explanation:

for any right angle triangle we know the pythagoras theorem reveals

hypotenuse² = height²+base²

by this formula we will calculate the length of hypotenuse

h² = 6²+7²

⇒ h =√36+49 = √85 = 9.22

now from the given triangle sin a = height/ hypotenuse

                                                sin a = 6/9.22 = 0.651

therefore

so angle a = 40.6°

really and truely i dont know sorry