3 years ago

What is the sum of the first 10 terms in the geometric sequence -3 6 -12 24 -48

1 answer:

3 0

Use the formula for the sum of a geometric sequence:
Sum = (a(r^n - 1))/(r - 1)
where a is the first term, -3
r is the common ratio, -2
and n is the number of terms

Thus,
Sum = ((-3)((-2)^10 - 1))/(-2-1) = 1023

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Convert 55°44'33" to decimal degree form. Round your answer to four decimal places.

Andreyy89

Answer:

55,7425

Step-by-step explanation:

Since there are 60 minutes in one degree and 3600 seconds in one degree, the formula is:

Decimal degrees = Degrees + (Minutes/60) + (Seconds/3600)

Here Degrees stay the same 55;

44' = 44/60 ≈ 0,733...

33" = 33/3600 ≈ 0,009166...

I've divided and added those three numbers by calculator in one operation and it shows exactly 55,7425. If you add them separately, you'll need to round the result.

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Step-by-step explanation: