Answer: 28
Step-by-step explanation: 80 x 0.35 = 28
Answer:
Step-by-step explanation:
![(\sqrt{z} +\sqrt{22})(\sqrt{z} -\sqrt{22})=35](https://tex.z-dn.net/?f=%28%5Csqrt%7Bz%7D%20%2B%5Csqrt%7B22%7D%29%28%5Csqrt%7Bz%7D%20-%5Csqrt%7B22%7D%29%3D35)
Subtract both sides from 35
![(\sqrt{z}+\sqrt{22} (\sqrt{z} -\sqrt{22})-35=35-35](https://tex.z-dn.net/?f=%28%5Csqrt%7Bz%7D%2B%5Csqrt%7B22%7D%20%28%5Csqrt%7Bz%7D%20-%5Csqrt%7B22%7D%29-35%3D35-35)
Simplify:
![(\sqrt{z})^{2} -57=0](https://tex.z-dn.net/?f=%28%5Csqrt%7Bz%7D%29%5E%7B2%7D%20-57%3D0)
Factor
=0
![\sqrt{z} +\sqrt{57}=0 or \sqrt{z} -\sqrt{57}=0](https://tex.z-dn.net/?f=%5Csqrt%7Bz%7D%20%2B%5Csqrt%7B57%7D%3D0%20%20%20%20or%20%20%20%20%5Csqrt%7Bz%7D%20%20-%5Csqrt%7B57%7D%3D0)
![\sqrt{z} +\sqrt{57} =0: No Solution for Z](https://tex.z-dn.net/?f=%5Csqrt%7Bz%7D%20%2B%5Csqrt%7B57%7D%20%3D0%3A%20No%20Solution%20for%20Z)
![\sqrt{z} -\sqrt{57} =0: z=57](https://tex.z-dn.net/?f=%5Csqrt%7Bz%7D%20-%5Csqrt%7B57%7D%20%3D0%3A%20z%3D57)
Your answer will be z=57
and No solution
Answer:
35 acres.
Step-by-step explanation:
Proportions:
15. 8 ⇒ 1 acre
553 ⇒ P acres
P = 553*1/15.8
P = 35 acres
Plug in each pair into each system of inequalities. And see which one fits