Answer:
f(x)=4−(x−7)
3
Let y=f(x)
So, x=f
−1
(y) ---- ( 1 )
y=f(x)
⇒ y=4−(x−7)
3
⇒ (x−7)
3
=4−y
⇒ x−7=
3
4−y
⇒ x=7+
3
4−y
⇒ f
−1
(y)=7+
3
4−y
.................. [ From ( 1 ) ]
∴ f
−1
(x)=7+
3
4−x
Answer:
the answer is in the picture :) hope u have a nice day!
Answer:
no solution
Step-by-step explanation:
hello
we replace y = -2x + 5 in the second expression and it comes
2x + -2x + 5 = -1
<=> 5 = -1
this is always false so there is no solution
hope this helps
Step-by-step explanation:
1. You first do what’s in the parentheses (in this situation, there are none)
2. Second, exponents (again, there are none)
3. Third, any multiplication or division (whichever comes first) from left to right (-25 x 0 =0)
4. You now have 50+50-0+2+2
5. Fourth, you do addition and subtraction from left to right, 50+50 = 100
6. Now you have 100-0+2+2
7. This gives you the correct answer of 104
Answer:
Step-by-step explanation:
-2x²=-8x+8 means : -2x²+8x-8
the discrinant of the quadratic equation is : delta = b²-4ac
when a=-2 and b=8 and c= -8
calculate delta = (8)²-4(-2)(-8) ......continu