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2 years ago

I don't under stand what is wrong.

Mathematics

1 answer:

MAXImum [283]2 years ago

4 0

Answer:

In the first step, there is an issue when distributing the -3 to the terms inside of the parentheses. When multiplying the -3 to the -5, you would get an answer of +15, not -15.

The full correct process is:

(4m + 9) - 3(2m - 5) = 4m + 9 - 6m + 15

= 4m - 6m + 9 + 15

= -2m + 24

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Find the sum of the first 47 terms of the following series, to the nearest integer.

topjm [15]

Answer:

The sum of the first 47 terms of the given series = 6016

Step-by-step explanation:

Given the sequence

13, 18, 23, ...

An arithmetic sequence has a constant difference 'd' and is defined by

$a_n=a_1+\left(n-1\right)d$

$18-13=5,\:\quad \:23-18=5$

As the difference between all the adjacent terms is the same.

$d=5$

$a_1=13$

Arithmetic sequence sum formula

$n\left(a_1+\frac{d\left(n-1\right)}{2}\right)$

Put the values

$d=5$

$a_1=13$

$n=47$

$=47\left(13+\frac{5\left(47-1\right)}{2}\right)$

$=47\left(13+115\right)$

$=47\cdot \:128$

$=6016$

Thus, the sum of the first 47 terms of the given series = 6016

8 0

3 years ago

Help me please!!!!!!

Levart [38]

You dived 4,005/16

then you will get your answer

4 0

3 years ago

Read 2 more answers

The map of a biking trail is drawn on a coordinate grid.

Nadusha1986 [10]

I don’t see the coordinate grid..?

5 0

3 years ago

Find the greatest common factor of 36 and 42

Margaret [11]

The greatest common factor is 6

36: 1, 2, 3, 4, 6, 9, 12, 18, 36
42: 1, 2, 3, 6, 7, 14, 21, 42

Hope this helps : )

3 0

3 years ago

Read 2 more answers

Can you help with this. Thanks!

Ierofanga [76]

92 males buy tickets so
200-92=108
so 108 females buy tickets

30 males buy business and a total of 44 people (female and male) but business so 44-30=14
14 females buy business

108-14(business ticket) = 94 females left.
62 of those 94 females buy economy tickets
so therefore 94-62=32. 32 females left over

14 females = business
62 females = economy
14 + 62 = 76
108 - 76 = 32
32 remaining females buy premium

it says a total of 60 people buy premium so 60 - 32 = 28

so 28 males buy premium

hope this helped

3 0

3 years ago