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ladessa [460]
3 years ago
7

find the sum of the first 20 terms of an arithmetic sequence with a first term of -14 and a comman difference of 4​

Mathematics
1 answer:
timama [110]3 years ago
7 0

Answer:

480

Step-by-step explanation:

Sn = n÷2 × (2a + (n-1)d)

n = 20 a = -14 d = 4

S20 = 10 × (-28 + 19 × 4) = 480

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HI could some one pleaseeee HELP ME !!!
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Answer:

The answer is 48

Step-by-step explanation:

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5 0
3 years ago
Principal $4,700 Interest rate 4% time 10 months, what is the simple interest and maturity level?
Naddik [55]

The simple interest of $4,700 principal at 4% interest and 10 months is <u>$156.67</u> and its <u>maturity level</u> is <u>83%</u>.

<h3>What is simple interest?</h3>

Simple interest refers to the interest calculated only on the principal.

With the simple interest method, the borrower only pays interest on the principal without considering the previously-accumulated interests.

<h3>Data and Calculations:</h3>

Principal = $4,700

Interest rate = 4%

Period = 10 months

Simple interest = $156.67 ($4,700 x 4% x 10/12)

Thus, the simple interest of $4,700 principal at 4% interest and 10 months is <u>$156.67</u> and its <u>maturity level</u> is <u>83%</u>.

Learn more about simple interests at brainly.com/question/

6 0
2 years ago
A teacher wants to find out the average number of weekly reading hours of her students. She noted the number of reading hours of
Studentka2010 [4]

A-Either the mean or median; both are 8

7 0
3 years ago
Two sections took the same vocabulary qui. Use the 5-number summary 20,30 35 45 80) to construct a boxplot for Section and use t
gulaghasi [49]

Answer:

C. There are the same number of scores in Section and Section

Step-by-step explanation:

The median of section I is greater than the median of section L. Median is the middle value or midpoint in the data set. In the given quiz the data set has different numbers for every section and therefore the values are not same. The data set has 75% of scores in section il which is higher than the section L.

7 0
3 years ago
If 6 cubes with an edge length of 14 can fit the height of the prism, what is the height of the prism? Enter the missing part of
Paha777 [63]

Answer: 84\ \text{units}

Step-by-step explanation:

Given

The length of each cube is a=14\ \text{units}

If there are 6 cubes placed over each other, then the height achieved by the cubes is

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7 0
2 years ago
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