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Dmitriy789 [7]
3 years ago
6

What is the value of x? Enter your answer as a decimal.

Mathematics
1 answer:
Alinara [238K]3 years ago
3 0

x = 3.5

Have a good day:)

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Given the sum s20= 910 of an arithmetic sequence and A20 = 95, Find A1​
Inessa05 [86]

Step-by-step explanation:

Sn=n/2(2a+(n-1)d)

910=n/2{2a+(n-1)d}

1820=n{2a+(n-1)d}

1820=20{2a+(20-1)d}

1820=20{2a+19d}

91=2a+19d

An=a+(n-1)d

95=a+(20-1)d

95=a+19d

91=2a+19d

---------------

4=-a

a=-4

91=2a+19d

91=2(-4)+19d

91=-8+19d

91+8=19d

99=19d

d=99/19

A=-4

5 0
3 years ago
G2 – 4g – 21 = (g – )(g + )
Sloan [31]
<span>g^2 – 4g – 21 = (g – 7)(g +3 )

hope it helps</span>
8 0
3 years ago
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there are 1012 souvenir paperweights that need to be packed in boxes each box will hold 12 paperweights how many boxes will be n
Rzqust [24]

1012 divided by 120 is 8.43 so 9 boxes will be needed

5 0
4 years ago
What is the distance from (3 1/2, 5) to (3 1/2, –12)?
r-ruslan [8.4K]

Answer:

0, 17

3 1/2, 5

<u>-3 1/2, -12</u>

0, 17

8 0
3 years ago
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suppose Tomas buys a total of 30 baseball and football cards in week 5 . how many of each would he have to buy to keep the same
Charra [1.4K]

Answer:

  • 18 baseball cards
  • 12 football cards

Step-by-step explanation:

The only relationship shown in the table is in week 1, where the ratio of baseball to football cards is ...

  baseball : football = 9 : 6

In week 1, the total of these numbers is 15. You want the total in week 5 to be 30, double the total in week 1. So, Thomas needs to purchase double the numbers he purchased in week 1:

  • 18 baseball cards
  • 12 football cards

_____

<em>Comment on the attachment</em>

This table came from another question you posted, a question with no content other than the table. The blue numbers are blanks in the original table that have been filled in so as to keep the same 3:2 proportion in each week. They appear to have no bearing on this question.

7 0
3 years ago
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