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3 years ago

8

Still pretty confused on this.

1 answer:

aleksandrvk [35]3 years ago

7 0

$\displaystyle \sum_{i=3}^7(3i-1)=3\cdot3-1+3\cdot4-1+3\cdot5-1+\\\\ +3\cdot6-1+3\cdot7-1=8+11+14+17+20=70$

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Find the 55th term in the following<br> arithmetic sequence :<br> -102, -98, -94, -90, ...

Harman [31]

Answer: It’s...

Step-by-step explanation: All of these numbers are going backwards by -4. Just keep subtracting. But then again, it will take you ages. So... try multiplying 51 by -4. Then -86 - whatever total you got. I have no clue if this will help. Is this even an assignment for you or a trick question?

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3 years ago

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olga_2 [115]

Answer:

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Step-by-step explanation:

this is the equation used to find the average of two numbers.

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3 years ago

Oakland has an elevation of 1,639 feet above sea level. Lake enriquillo’s elevation is 149 feet below sea level. What is the dif

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4 years ago

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BaLLatris [955]

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3 years ago

Which of the following circles have their centers on the x-axis? Check all that apply.

Alexeev081 [22]

Answer: Option A and Option D

Step-by-step explanation:

By definition the general equation of a circle has the following form

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Identify among the options all those equations that have a value of k = 0

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3 years ago