ANSWER IS D.
Process:
See in the attached fig,
BD=length of pole=?
AB=length of vertical(imagine)
BC=length of shadow=20 ft
In traingle ABC,
tan(36)=AB/BC
AB=tan(36)*20
AB=14.5308 ft
Now we find <BDC to use sine law.
For that,
<BDC+<DCB+<CBD=180
<BDC+36+(90+12)=180
<BDC=180-112-36
<BDC=42
Now we use sine law in traingle ABC,
BC/sin (<BDC) =BD/sin (<DCB)
20/sin(42)=BD/sin(36)
BD=(20*sin36)/sin42
BD=17.56=17.6(approx) >>>>>>>>ANSWER D
7! Is 7 factorial which equals 7*6*5*4*3*2*1=5040
Answer:
3. 314 student and 226 adult
4. x = 6.5, y = -0.5
Step-by-step explanation:
3. First we will take our information and make a system of equations:


is the number of adult tickets sold and
is the number of student tickets sold.
From the second equation we can rearange it to be:

Then we can plug in our new value of
to our first equation




We can then find
by plugging in s to our second equation


4. It is mostly solved already. We can take the value of y from the first equation and plug it into the second to get:




Then plug our value of x into the first equation to get:




Answer:
x + 10.5
Step-by-step explanation:
First, divide 2x + 21 by 2, and you get x + 10.5.