Answer:
A) 
Step-by-step explanation:
Given expression:

To factor the given expression completely.
Solution:
In order to factor the expression, we will factor in pairs.

We will factor the G.C.F of the terms in the pairs.
G.C.F. of
and
can be given as:


Thus, G.C.F. = 
G.C.F. of
and
can be given as:


Thus, G.C.F. = 
The expression after factoring the G.C.F. pairs is given as:

Taking G.C.F. of the whole expression as
is a common term.

The expression is completely factored.
Answer: first one B/the second one and c/the third one for the next question
Step-by-step explanation:
Answer:
Height of slide = 5 feet (Approx.)
Step-by-step explanation:
Given:
Length of slide = 12 feet
Angle of depression = 25°
Find:
Height of slide
Computation:
Length of slide = Hypotenuse
Height of slide = Perpendicular
Using trigonometry function;
Sin θ = Perpendicular / Hypotenuse
Sin 25 = Height of slide / 12
0.422 = Height of slide / 12
Height of slide = 12 x 0.422
Height of slide = 5.064
Height of slide = 5 feet (Approx.)
10 because if you use this math technique that my teacher taught me you will know