Answer:
![6x-7x^{2}](https://tex.z-dn.net/?f=6x-7x%5E%7B2%7D)
Step-by-step explanation:
o= 4x
2 +7x -3
0= 8x +7x -3
0= 15x -3
- 15x =-3
x= ![\frac{1}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B5%7D)
x= 0.2 , x =![x^{-1}](https://tex.z-dn.net/?f=x%5E%7B-1%7D)
![(f+g)(2)](https://tex.z-dn.net/?f=%28f%2Bg%29%282%29)
![18 - 7x -5-7 \\6-7x\\](https://tex.z-dn.net/?f=18%20-%207x%20-5-7%20%5C%5C6-7x%5C%5C)
Answer:
B
Step-by-step explanation:
Answer:
B
Step by Step explanation:
So since the equation says that 8 is less than the square root for b, It is correct because the square root of 72 would be 8.48528137424. Which of course 8, is less than that. But it also says that the square root of 72 is less than 9. Which based on my calculations would be correct.
X-y=200
xy=mn
so
first equation times -1 and add x both sides
y=x-200
sub that for y in other equation
x(x-200)=min
x²-200x=min
take deritivive
2x-200=min
find where it equals 0
2x-200=0
2x=200
x=100
y=x-200
y=100-200
y=-100
the numbers aer 100 and -100
Part one, false. part two true