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3 years ago

What is the explicite to 19,13,7,1,...

1 answer:

andrey2020 [161]3 years ago

5 0

19, 13, 7, 1,…
- 6 - 6 - 6

Something that is explicit to the problem is tat it has a common difference of -6.

a(n) = a₁ + d(n - 1)
a(n) = 19 - 6(n - 1)
a(n) = 19 - 6(n) + 6(1)
a(n) = -6n + 19 + 6
a(n) = -6n + 25

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3 years ago

At a large nursery, a border for a rectangular garden is being built. Designers want the border’s length to be twice as long as

sasho [114]

Let

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y--------> the border’s width

P--------> perimeter of the border

we know that

x=5+y------> equation 1

P=2*[x+y]-----> P=2x+2y

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Inga [223]

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