Find a85 of the sequence 4,9,14,19,

424

Step-by-step explanation:

Since the difference between consecutive terms are constant, that is

19 - 14 = 14 - 9 = 9 - 4 = 5 ← common difference (d)

Then these are the terms of an arithmetic sequence with n th term

= a₁ + (n - 1)d

where a₁ is the first term = 4 and d the common difference, hence

= 4 + (84 × 5) = 4 + 420 = 424

complete the steps to find the area of the trapezoid.

area of rectangle = 256   square units

area of triangle 1 = 24  square units

area of triangle 2 = 16  square units

area of triangle 3 =   96 square units

area of trapezoid = 120  square units

step-by-step explanation:

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step-by-step explanation:

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