In △
O
P
Q
,
△OPQ,
Q
O
‾
≅
P
Q
‾
QO
​
≅
PQ
​
and
m
∠
Q
=
5
0
∘
.
m∠Q=50
∘
. Find
m
∠
P
.
m∠P.

How do you answer this question? (step by step)

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.