Step-by-step Answer:
What is the solution to the system of equations?
y = –3x – 2 ..............(1)
5x + 2y = 15..............(2)
Substitute (1) in (2) to give
5x + 2(-3x-2) = 15
5x-6x-4 = 15
-x-4=15
solve for x:
-4-15 = x
x=-19
Now substitute x=-19 into equation (1)
y = -3x-2 = 57-2 = 55
Therefore the solution is (-19, 55)
Answer:
60.96437 is the 5 decimal place of 60.9643790503 number
![\sqrt[n]{x^m}=x^\frac{m}{n}](https://tex.z-dn.net/?f=%20%5Csqrt%5Bn%5D%7Bx%5Em%7D%3Dx%5E%5Cfrac%7Bm%7D%7Bn%7D%20%20)
so![\frac{8}{ \sqrt[7]{x^{15}} }= \frac{8}{x^ \frac{15}{7} }=8x^{(\frac{-15}{7})}](https://tex.z-dn.net/?f=%20%5Cfrac%7B8%7D%7B%20%5Csqrt%5B7%5D%7Bx%5E%7B15%7D%7D%20%7D%3D%20%5Cfrac%7B8%7D%7Bx%5E%20%5Cfrac%7B15%7D%7B7%7D%20%7D%3D8x%5E%7B%28%5Cfrac%7B-15%7D%7B7%7D%29%7D%20%20)
