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Kazeer [188]
3 years ago
8

The graph shows a proportinal relashionship which eqaution matches the graph?

Mathematics
1 answer:
Fofino [41]3 years ago
4 0

Answer:

Hey sisters!

Step-by-step explanation:

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x=40

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The daytime temperature in Pinedale was 7 1/2 degrees Celsius yesterday. Today the temperature dropped to -3 degrees Celsius. Th
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-10.5 deg

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4 0
3 years ago
Read 2 more answers
Find the first term of the arithmetic sequence in which.... a27=-1/2 and the common difference is 2
kogti [31]

Answer:

1) First term = -105/2

2) The first option is the correct answer 9/2[ 2 + 26]

Step-by-step explanation:

It is given that,

The first term of the arithmetic sequence in which.... a27=-1/2

and the common difference is 2  

<u>To find the First term </u>

First term of an AP be a and common difference d the nth term can be written as,

an = a + (n-1)d

Here n = 27

d = 2 , a27 = -1/2

a + (26 x 2) = -1/2

a = -105/2

From the figure We get  an = 3n - 1

<u>To find first term a1 and ninth term s9</u>  

a1 = 3 x 1 - 1 = 2

a9 = 3x 9  - 1 = 26

<u>Sum of nth term of an AP  </u>

n/2[first term  + Last term]

first term a1 and Last term = 26

<u>Sum of first 9 terms S9 </u>

S9 = 9/2[ 2 + 26]

First option is the correct answer

4 0
4 years ago
Read 2 more answers
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