Answer:
A to #4
B to #3
C to #1
D to #2
Step-by-step explanation:
A. 7 + 3² = 16
B. 5 - 2²=1
C. 2 · 2³ = 2^4
D. 3^4/3^1=27
Answer:
I'm gonna go with C
Step-by-step explanation:
Don't take my word for it
Answer:
<h2>39,991</h2>
Step-by-step explanation:
The formula of a sum of a geometric sequence:
![S_n=\dfrac{a_1(1-r^n)}{1-r}](https://tex.z-dn.net/?f=S_n%3D%5Cdfrac%7Ba_1%281-r%5En%29%7D%7B1-r%7D)
We have
![a_1=1,\ a_2=-6,\ a_3=36,\ ....\\\\r=\dfrac{a_2}{a_1}\to r=\dfrac{-6}{1}=-6](https://tex.z-dn.net/?f=a_1%3D1%2C%5C%20a_2%3D-6%2C%5C%20a_3%3D36%2C%5C%20....%5C%5C%5C%5Cr%3D%5Cdfrac%7Ba_2%7D%7Ba_1%7D%5Cto%20r%3D%5Cdfrac%7B-6%7D%7B1%7D%3D-6)
Substitute:
![a_1=1,\ n=7,\ r=-6:\\\\S_7=\dfrac{1(1-(-6)^7)}{1-(-6)^7}=\dfrac{1-(-279936)}{1+6}=\dfrac{279937}{7}=39991](https://tex.z-dn.net/?f=a_1%3D1%2C%5C%20n%3D7%2C%5C%20r%3D-6%3A%5C%5C%5C%5CS_7%3D%5Cdfrac%7B1%281-%28-6%29%5E7%29%7D%7B1-%28-6%29%5E7%7D%3D%5Cdfrac%7B1-%28-279936%29%7D%7B1%2B6%7D%3D%5Cdfrac%7B279937%7D%7B7%7D%3D39991)
Answer:
you need more info
Step-by-step explanation:
2x < 10
Solving:
Divide each side by 2
x < 5
Hope this helps!