In ΔPQR,
P
R
‾
PR
is extended through point R to point S, m∠PQR =
(
2
x
+
14
)
∘
(2x+14)
∘
, m∠QRS =
(
9
x
−
8
)
∘
(9x−8)
∘
, and m∠RPQ =
(
2
x
+
8
)
∘
(2x+8)
∘
. Find m∠QRS.

Segment ab is shown on the graph. which shows how to find the x-coordinate of the point that will divide ab into a 2: 3 ratio using the formula

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

Find the domain of the following expression: 1/(√x)-2