Answer:
![81.2\:\mathrm{ft}](https://tex.z-dn.net/?f=81.2%5C%3A%5Cmathrm%7Bft%7D)
Step-by-step explanation:
We can form a right triangle and use basic trig for a right triangle to solve this problem:
, where
is the height of the tree.
Solving, we get:
.
X + 2y = 10 . . . (1)
6y = -3x + 30 . . . (2)
From (2), 3x + 6y = 30
3(x + 2y = 10)
3 x (1)
Since, the second equation is a multiple of the first equation, the system will have an infinitely number of solutions.
Answer:
3x + 2 < –7 or 3x + 2 > 7
Answer:
0,-11
Step-by-step explanation:
-p^2 − 11p = 0
Factor out -p
-p( p+11) =0
Using the zero product property
-p =0 p+11 =0
p =0 p = -11
Answer:
13 cm
Step-by-step explanation:
AC=BD=13 cm