Answer:
9
Step-by-step explanation:
f(-6) means you plug -6 into x.
f(x)= −2/3x + 5
f(-6)= −2/3(-6) + 5
f(-6)= 4 + 5
f(-6)= 9
To find the variable x, set the two outside equations equal to each other because all sides are equal
x+13=3x+3
13=2x+3
10=2x
x=5
then to find h, you set the equation equal to 90 because that's how many degrees it is
2h-45=90
2h=135
h=67.5
Answer: 4.8 ft
To answer this question you need to know how much shadow: actual height ratio. Flagpole is having 8 ft shadow with 20 ft actual height. The ratio should be= 8 ft: 20 ft= 0.4
Then multiply the ratio with the oak tree shadow. The equation would be:
0.4 x 12 ft= 4.8 ft
circumference = diameter x PI
3300 *3.14 = 10,362 feet
