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NNADVOKAT [17]
3 years ago
14

14. The sum of two integers is – 1.d

Mathematics
1 answer:
Alexxandr [17]3 years ago
3 0

Answer:

a)The integers could be : -3 and 2

                                      -4 and 3

                                      -5 and 4

                                      -9 and 10

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

   b) the integers could be any pair -(x+1) and x  with x a natural number

Step-by-step explanation:

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The 9th and the 12th term of an arithmetic progression are 50 and 65 respectively. find the common difference
Rzqust [24]

The first term of the arithmetic progression exists at 10 and the common difference is 2.

<h3>How to estimate the common difference of an arithmetic progression?</h3>

let the nth term be named x, and the value of the term y, then there exists a function y = ax + b this formula exists also utilized for straight lines.

We just require a and b. we already got two data points. we can just plug the known x/y pairs into the formula

The 9th and the 12th term of an arithmetic progression exist at 50 and 65 respectively.

9th term = 50

a + 8d = 50 ...............(1)

12th term = 65

a + 11d = 65 ...............(2)

subtract them, (2) - (1), we get

3d = 15

d = 5

If a + 8d = 50 then substitute the value of d = 5, we get

a + 8 * 5 = 50

a + 40 = 50

a = 50 - 40

a = 10.

Therefore, the first term is 10 and the common difference is 2.

To learn more about common differences refer to:

brainly.com/question/1486233

#SPJ4

4 0
2 years ago
I really don't understand this
RoseWind [281]

Answer:

-1

Step-by-step explanation:

The mean is the sum of all values divided by the amount of values.

We take the sum of all the numbers:

-3 + -8 + 12 + -15 + 9

-11 + 12 + -15 + 9

1 + -15 + 9

10 + -15

-5

We then divide the sum by how many number we have (we are given 5 numbers):

-5/5 = -1

Therefore, our mean is equal to -1.

6 0
3 years ago
Read 2 more answers
Express 5/21 as a decimal...please help !
Rudik [331]
5/21 = 5 ÷ 21 = 0.238
4 0
3 years ago
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Which gives 1600 m in km? (A) 16,000 (B)1600 (C)16 (D)1.6 (ALL ARE KM!)
Sloan [31]
1600m = 1600 ÷ 1000 = 1.6 km

Answer: 1.6 km
7 0
3 years ago
If h(c) = -4, then c =
klemol [59]
Answer should be -4

since there is no other context, we can assume that x is -4.
8 0
3 years ago
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