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lyudmila [28]
3 years ago
13

PLZ HELP MEEE!!!

Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
6 0
It’s D 100% I hope this helped ;)
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Find the sum of the first 35 terms of the following series, to the nearest integer.<br> 3, 11, 19...
Tems11 [23]
<h3>Answer:   4865</h3>

=======================================================

Explanation:

The sequence {3,11,19,...} is arithmetic since we are adding 8 to each term to get the next one

  • 3+8 = 11
  • 11+8 = 19

etc. This means the common difference is d = 8.

The first term is a = 3

Let's use this formula

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

so we can find the sum of the first n terms. In this case, n = 35

So,

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

S = 35*(2*3 + 8(35 - 1) )/2

S = 35*(6 + 8(34))/2

S = 35*(6 + 272)/2

S = 35*(278)/2

S = 35*139

S = 4865

4 0
3 years ago
Solve for x. Help me out because I haven’t been paying attention all year
svet-max [94.6K]

Answer:

x = 18

Step-by-step explanation:

(whole secant) x (external part) =  (whole secant) x (external part)

(6+x)6 = (8+10)* 8

6*(6+x) = 8(18)

Divide each side by 6

6+x = 8(18)/6

6+x = 8*3

6+x = 24

Subtract 6 from each side

6+x-6 =24-6

x = 18

8 0
3 years ago
X + 12/x + 2 = x/x + 8<br> A) X = -4<br> B) X = 8<br> C) X = 6<br> D) X = -6
xxMikexx [17]
I got x = 96/18 i dont think the answer is there
4 0
3 years ago
BRAINLIEST Change 7.2 grams to milligrams. mg
fgiga [73]

Answer:

7200 mg

Step-by-step explanation:

multiply the mass value by 1000

5 0
3 years ago
Read 2 more answers
19-20<br> Please<br><br> Thank u
yan [13]
19-20 = -1 u have to subtract left from tight <span />
7 0
3 years ago
Read 2 more answers
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