Question

D=-1,5 a10=150 a15-?

Answer 1

Ответ:показал на фото

Объяснение:

:)

Answer 2

а15=20

Объяснение:

Надебсь помагла

Answer 3

To find the value of the 15th term (a15) in the arithmetic sequence with a common difference (d) of -1.5 and an initial term (a1) of 150, we can use the formula for the nth term of an arithmetic sequence:

aₙ = a₁ + (n - 1) * d

Substituting the given values into the formula, we have:

a15 = 150 + (15 - 1) * (-1.5)

Simplifying the equation:

a15 = 150 + 14 * (-1.5) a15 = 150 - 21 a15 = 129

Therefore, the 15th term (a15) in the arithmetic sequence is 129.