Use the formula for the sum of the first n terms of a geometric sequence to solve.Find the sum of the first 13 terms of the geometric sequence: 2, 4, 8, 16, 32, . . . .

A. 16,362
B. 16,419
C. 16,384
D. 16,382


Answer: D

Mathematics

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The temperature rose 18° in 1 hour and then dropped 11° in the next hour. Find the overall change in temperature. ?

A. +9° B. +18° C. 0° D. +7° E. -7°

Mathematics

Find a formula for the nth term of the sequence.0, 2, 0, 2, 0 (alternating 0's and 2's)

A. an = 1 - (-1)n B. an = 1 + (-1)n+1 C. an = 1 + (-1)n D. an = 1 + (-1)n-1

Mathematics

Provide an appropriate response.Find the diameter of a circle with a circumference of 37.68 cm (round to the nearest hundredth).

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

Mathematics

Use the square root method to solve the equation. 2x2 = 30

A. ±15
B. 15
C. ±
D. 16

Mathematics