The correct answer would be A. Hope this helps!
Answer:
d equals 2 if that's what u need
Answer:
23 - 24 = -1
Step-by-step explanation:
since the are all multiplied by square root of 2, we can set this as a variable
x = square root 2
8x + 15x -24x
this equals -1x = -x = -square root 2
The explicit formula of an arithmetic sequence:
![a_n=a_1+(n-1)d](https://tex.z-dn.net/?f=a_n%3Da_1%2B%28n-1%29d)
We have:
![a_1=-100,\ a_2=-70,\ a_3=-40;\ a_4=-10,\ ...\\\\d=a_{n+1}-a_n\to d=-70-(-100)=-70+100=30](https://tex.z-dn.net/?f=a_1%3D-100%2C%5C%20a_2%3D-70%2C%5C%20a_3%3D-40%3B%5C%20a_4%3D-10%2C%5C%20...%5C%5C%5C%5Cd%3Da_%7Bn%2B1%7D-a_n%5Cto%20d%3D-70-%28-100%29%3D-70%2B100%3D30)
Substitute:
![a_n=-100+(n-1)(30)=-100+30n-30=30n-130](https://tex.z-dn.net/?f=a_n%3D-100%2B%28n-1%29%2830%29%3D-100%2B30n-30%3D30n-130)
Answer: an = 30n - 130
Y=kx
-5=k(15)
-5/15=k
-1/3=k
now,
y=-1/5x
3=-1/5x
3×5=-1(x)
15=-1(x)
multiplying both sides by -1,we get
-15=x