Th
Write an
explicit formula for
ans
then
term of the sequence 40,50,60,

n starts at 1, and n is a positive whole number (1,2,3,...)

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Explanation:

The sequence is arithmetic with first term 40 and common difference 10. Meaning we add 10 to each term to get the next one.

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a1 = 40 = first term

d = 10 = common difference

is the general nth term of this arithmetic sequence

Plug in n = 1 and you should get

Plug in n = 2 and you should get

and so on

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.

you can't solve x because it is 2 linear equation and you only have one equation