I’m pretty sure the answer is 6. Have a wonderful day!
15. f(n)= 2n-3
a) =2(11)-7
=22-7
=15
=2(-6)-7
=-12-7
=-19
b) f(g)=-5x+1
= -5(41)+1
= -205+1
= -204
= -5(-16)+1
= 80+1
= 81
Answer:
-9/2
Step-by-step explanation:
-2x-5 = 4
+5 +5
-2x = 9
------ ------
-2 -2
x = -9/2
Using <span>Descartes' rule of signs.
There are 4 changes of signs of coefficients:
+ to - (+x^6-x^5)
- to + (-x^4+4x^3)
+ to - (+4x^3-12x^2)
- to + (-12x^2+12)
Therefore, there are 4,2 or 0 positive roots </span><span><span>at most</span>. So it must be the third answer.
</span>
Answer:
The variable in the equation is represented by
✔ y
.
To solve the equation, you must find the
✔ value of y
that makes the equation true.
1 is a solution of the equation because
✔ 5 = 5
is a true statement
Step-by-step explanation:
