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Step2247 [10]
3 years ago
6

Which answer choice correctly complete the sentence? Asking the "Did you Check" questions is an important step in the Problem So

lving Plan because you can A. determine if your answers are reasonable. B. organize your thoughts. C. understand the problem better. D. define your strategy easier.
Mathematics
1 answer:
Mumz [18]3 years ago
7 0

Answer:

A

Step-by-step explanation:

Checking something is a way to see if your answer is reasonable.

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hatdog jdudhsisbsn

Step-by-step explanation:

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On each of ner birthdays. Bernadette blew out a number of candles
marissa [1.9K]

Answer:

5778

Step-by-step explanation:

1+2+3+4+5+....+105+106+107

The sequence of numbers (1, 2, 3, … , 107) is arithmetic and when we are looking for the sum of a sequence, we call it a series. Thanks to Gauss, there is a special formula we can use to find the sum of a series:

S=n(n+1)/2=11556÷2=5778

S is the sum of the series and n is the number of terms in the series, in this case, 107

There are other ways to solve:

This is an arithmetic series, for which the formula is:

S = n[2a+(n-1)d]/2

where a is the first term, d is the difference between terms, and n is the number of terms.

For the sum of the first 107 whole numbers:

a = 1, d = 1, and n = 107

Therefore, sub into the formula:

S = 107[2(1)+(107-1)(1)]/2 =

107(2+106)/2=107*108/2=5778

so she blow out 5778 candless during her lifetime

4 0
3 years ago
Hey Guys, Please help me I decided to lesson the questions
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Answer:

Step-by-step explanation:

im pretty sure its the 1st one

4 0
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