You can see it's a geometric sequence because the ratio is constant (
).
The nth term of a geometric sequence:
It has to be the sum for term 4 through term 15, so n=4 and the number above the sigma is 15.
Your answer:
Answer:B 55
Step-by-step explanation:
Answer:
x=12 but who knows maybe
Step-by-step explanation:
if we are trying to say those lines are equal length than surely the equations must be equal value otherwise they aren't equal so we can probably set them equal to each other and solve for x right? 2x+6=3x-6 subtract 6. 2x=3x-12. subtract 3x. -1x=-12. divide by -1 so x=12.
Answer:
2 students.
Step-by-step explanation:
add together all of the students and then subtract that from 40.
20+15+3 = 38
40-38 = 2
