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Gnoma [55]
3 years ago
12

Ariana started a savings account with $240. She deposits $30 into her account at the end of each month. She wants to know how ma

ny months it will take for her account to have a balance greater than $500.
Mathematics
1 answer:
mafiozo [28]3 years ago
8 0

Answer:

9 months

Step-by-step explanation:

$500 - $240 = $260

$260/$30 = 8.67(3s.f.) ≈ 9 months

Recheck:

Balance after 9 months = 240 + (30×9) = 240 + 270 = $510

                                      ∴ $510 > $500

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In a continuous series, mean(x) = 80, assumed mean(A) = 60 and<br>EF=40 then find the value of EFd.​
Aneli [31]

Using the given information, the value of Σfd is 800

<h3>Calculating mean using Assumed mean </h3>

From the question, we are to determine the value of Σfd

The formula for mean, using the assumed mean method is given by

\bar x = A + \frac{\sum fd}{\sum f}

Where \bar x is the mean

A is the assumed mean

From the given information,

\bar x = 80

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Putting the parameters into the equation, we get

80 = 60 + \frac{\sum fd}{40}

80-60 = \frac{\sum fd}{40}

20 = \frac{\sum fd}{40}

\sum fd = 20 \times 40

\sum fd = 800

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Learn more on Mean here: brainly.com/question/20118982

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2 years ago
What is 27÷2356 with the work
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3 years ago
Of the 36 students in the book club .five ninths Of the students prefer adventure books to historical books. How many of the stu
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