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mariarad [96]
3 years ago
9

What is 28 - ( -15)

Mathematics
2 answers:
bearhunter [10]3 years ago
5 0

Answer:

43

Step-by-step explanation:

When subtracting a negative number, the negatives cancel out. This gives us 28 + 15 which is 43.

Sidana [21]3 years ago
3 0

Answer:

43

Step-by-step explanation:

so when subtracting a negative number the number becomes positive and the problem become 28 + 15 because the negative (subtraction) signs cancel out

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Step-by-step explanation:

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Read 2 more answers
What is the sum of the first 5 terms of this geometric series? Use . -4 + 12 + (-36) + ⋯
yKpoI14uk [10]

Answer:

The sum of the first 5 terms is -244

Step-by-step explanation:

To calculate the sum of the geometric series, we need the first term, the common ratio and the number of terms we would like to sum.

The first term here is -4

The common ratio is T2/T1 or T3/T2 = 12/-4 = -3

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The formula to use is;

Sn = a(1-r^n)/(1-r)

Plugging these values, we have;

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