<span>The answer should be 0.00008726567
Hope this helps! </span>
Absolute value tells how many spaces the number is from 0. And opposite numbers are negative numbers on the left side of 0.
Make equal to 0
minus 12from both sides
x^2+10x+13=0
we can't factor so use quadratic formula
x=

x=

x=

x=

x=

x=

x=

or

aprox
x=-1.5359 or -8.4641
Dannng I thought I seen this one before
Answer:
8m
Step-by-step explanation:
x = hypotenuse since they want the point of observation to the top of the tree
cos 60 = 4/x
x = 4 / cos 60
x = 8m