The following is an arithmetic sequence that has 10 numbers LaTeX: 1,\ a_2, \ a_3, \ a_4, \ \cdots,\ a_{10}.1 , a 2 , a 3 , a 4 , ⋯ , a 10 . If these 10 numbers add up to 100, what is the second number LaTeX: a_2a 2?

Step-by-step explanation:

The arithmetic sequence is given as:

We are told that the 10 numbers add up to 100.

We know that the nth term of an arithmetic sequence

Therefore, the second number

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.