0.5*x+7 I think may be the correct answer. Correct me if I’m wrong.
Answer:
![x =i\\\\x =-i\\\\x=\sqrt 5\\\\x=-\sqrt 5](https://tex.z-dn.net/?f=x%20%3Di%5C%5C%5C%5Cx%20%3D-i%5C%5C%5C%5Cx%3D%5Csqrt%205%5C%5C%5C%5Cx%3D-%5Csqrt%205)
Step-by-step explanation:
![~~~~~~~~x^4-4x^2 -5 = 0\\\\\implies x^4-5x^2+x^2 -5 = 0\\ \\\implies x^2(x^2 -5)+(x^2-5) =0\\ \\\implies (x^2 +1)(x^2 -5) - 0\\\\\implies x^2+1 = 0~~~~~~~~~ \text{Or}~~~~~~~~~ x^2 -5 = 0\\\\\implies x^2 = -1~~~~~~~~~~~~ \text{Or}~~~~~~~~~x^2 = 5\\\\\implies x= \pm\sqrt{-1}~~~~~~~~~\text{Or}~~~~~~~~~x=\pm\sqrt 5\\\\\implies x = \pm i~~~~~~~~~~~~~~\text{Or}~~~~~~~~~x=\pm\sqrt 5\\](https://tex.z-dn.net/?f=~~~~~~~~x%5E4-4x%5E2%20-5%20%3D%200%5C%5C%5C%5C%5Cimplies%20x%5E4-5x%5E2%2Bx%5E2%20-5%20%3D%200%5C%5C%20%5C%5C%5Cimplies%20x%5E2%28x%5E2%20-5%29%2B%28x%5E2-5%29%20%3D0%5C%5C%20%5C%5C%5Cimplies%20%28x%5E2%20%2B1%29%28x%5E2%20-5%29%20-%200%5C%5C%5C%5C%5Cimplies%20x%5E2%2B1%20%3D%200~~~~~~~~~%20%5Ctext%7BOr%7D~~~~~~~~~%20x%5E2%20-5%20%3D%200%5C%5C%5C%5C%5Cimplies%20x%5E2%20%3D%20-1~~~~~~~~~~~~%20%5Ctext%7BOr%7D~~~~~~~~~x%5E2%20%3D%205%5C%5C%5C%5C%5Cimplies%20x%3D%20%5Cpm%5Csqrt%7B-1%7D~~~~~~~~~%5Ctext%7BOr%7D~~~~~~~~~x%3D%5Cpm%5Csqrt%205%5C%5C%5C%5C%5Cimplies%20x%20%3D%20%5Cpm%20i~~~~~~~~~~~~~~%5Ctext%7BOr%7D~~~~~~~~~x%3D%5Cpm%5Csqrt%205%5C%5C)
Answer:
sSS Congruence Postulate
The answer is SSS Congruence Postulate
Step-by-step explanation:
Answer: The smaller piece is 750m long.
Step-by-step explanation:
let the smaller piece be x
so
150m + x + x = 1650
150 + 2x = 1650
or, 2x = 1500
so, x = 750 m