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natali 33 [55]
3 years ago
9

WILL GIVE BRAINLIEST!! NEED ANSWERS!! Equations. 1. 4x-2-2x-6= -20

Mathematics
1 answer:
Keith_Richards [23]3 years ago
6 0

its 5 buddy

ok its 5 numver 5

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Which two numbers below have the least common multiple of 48?
Tems11 [23]

Answer:

D. 3 and 16

Step-by-step explanation:

A common multiple is the result of multiplication of two numbers  

3x16= 48

Brainliest plz?

6 0
2 years ago
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the difference between a number and two times a number is seven the number is greater than zero what is the number
bagirrra123 [75]
7 is the answer

2x - x = 7
x = 7

3 0
3 years ago
How is the series 5+11+17…+251 represented in summation notation?
NISA [10]

Answer:

\displaystyle \large{\sum_{n=1}^{42}(6n-1)

Step-by-step explanation:

Given:

  • Series 5+11+17+...+251

To find:

  • Summation notation of the given series

Summation Notation:

\displaystyle \large{\sum_{k=1}^n a_k}

Where n is the number of terms and \displaystyle \large{a_k} is general term.

First, determine what kind of series it is, there are two main series that everyone should know:

  • Arithmetic Series

A series that has common difference.

  • Geometric Series

A series that has common ratio.

If you notice and keep subtracting the next term with previous term:

  • 11-5 = 6
  • 17-11 = 6

Two common difference, we can in fact say that the series is arithmetic one. Since we know the type of series, we have to find the number of terms.

Now that brings us to arithmetic sequence, we know that first term is 5 and last term is 251, we’ll be finding both general term and number of term using arithmetic sequence:

<u>Arithmetic Sequence</u>

\displaystyle \large{a_n=a_1+(n-1)d}

Where \displaystyle \large{a_n} is the nth term, \displaystyle \large{a_1} is the first term and \displaystyle \large{d} is the common difference:

So for our general term:

\displaystyle \large{a_n=5+(n-1)6}\\\displaystyle \large{a_n=5+6n-6}\\\displaystyle \large{a_n=6n-1}

And for number of terms, substitute \displaystyle \large{a_n} = 251 and solve for n:

\displaystyle \large{251=6n-1}\\\displaystyle \large{252=6n}\\\displaystyle \large{n=42}

Now we can convert the series to summation notation as given the formula above, substitute as we get:

\displaystyle \large{\sum_{n=1}^{42}(6n-1)

5 0
2 years ago
A company developed the following linear model to help budget annual expenses over time. In this model, x represents the number
olasank [31]
2010: 227681
2011: 265577
2012: 303473
and so on
8 0
3 years ago
sam can prepare 20 wall paintings in four weeks how much time will he need to prepare 80 wall paintings
FinnZ [79.3K]

Answer:16 weeks

Step-by-step explanation:Since we know Sam can make 20 paintings in 4 weeks we must add the weeks

8 weeks will be 40 paintings

12 weeks will be 60 paintings

16 weeks will be 80 paintings

Hence the answer is 16 weeks to create 80 paintings

6 0
3 years ago
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