Find the sum of the first n terms of the following arithmetic sequence.a1 = -5, d = -6; n = 10

A. 295
B. 220
C. -320
D. -295


Answer: C

Mathematics

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Solve the problem.A fully cooked turkey is taken out of an oven set at 200°C (Celsius) and placed in a sink of chilled water of temperature 4°C. After 3 minutes, the temperature of the turkey is measured to be 50°C. How long (to the nearest minute) will it take for the temperature of the turkey to reach 15°C? Assume the cooling follows Newton's Law of Cooling:   U = T + (Uo - T)ekt.(Round your answer to the nearest minute.)

Fill in the blank(s) with the appropriate word(s).

Mathematics

Solve the problem.The temperature in Fairbanks (in °F) is approximated by  where T(x) is the temperature on day x, with x = 1 corresponding to Jan 1 and  corresponding to Dec 31. Estimate the temperature, to the nearest degree, on day 8.

A. -4°F B. -25°F C. -37°F D. -12°F

Mathematics

Solve.Find the perimeter of the trapezoid.

A.  in.
B. x + 10 in.
C.  in.
D.  in.

Mathematics

Write the quadratic equation having solutions

A.
B.
C.
D.
E.

Mathematics