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gregori [183]
3 years ago
5

Jess was comparing the population in three towns. The populations were 3,486, 2,320, and 3,891. About how many people lived in t

he three towns altogether? O 7,000 9.99 O 8,000​
Mathematics
1 answer:
Pavel [41]3 years ago
4 0

Answer:

9,696

Step-by-step explanation:

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7. Are the ordered pairs below an arithmetic sequence or geometric
DochEvi [55]

Answer:

8. Arithmetic Progression

9. f(9) = 300

Step-by-step explanation:

Given

\{(1,55)\ (2, 45)\ (3, 35)\ (4, 25)\}

Solving (8): Arithmetic or Geometric

We start by checking if it is arithmetic by checking for common difference (d).

d = y_2 - y_1 = y_3 - y_2 = y_4 - y_3

This gives:

d = 45 - 55 = 35 - 45 = 25 - 35

d = -10 = -10 = -10

d=-10

<em>Because the common difference is equal, then it is an arithmetic progression</em>

<em></em>

Solving (8):

f(n) = f(1) + f(n-1)

To find f(9), we substitute 9 for n

f(9) = f(1) + f(9-1)

f(9) = f(1) + f(8)

We need to solve for f(8); substitute 8 for n

f(8) = f(1) + f(8 - 1)

f(8) = f(1) + f(7)

We need to solve for f(7); substitute 7 for n

f(7) = f(1) + f(7 - 1)

f(7) = f(1) + f(6)

We need to solve for f(6); substitute 6 for n

f(6) = f(1) + f(6 - 1)

f(6) = f(1) + f(5)

We need to solve for f(5); substitute 6 for n

f(5) = f(1) + f(5 - 1)

f(5) = f(1) + f(4)

From the function, f(4) = 25 and f(1) = 55.

So:

f(5)=55 + 25

f(5)=80

f(6) = f(1) + f(5)

f(6) = 55 + 80

f(6) = 135

f(7) = f(1) + f(6)

f(7) = 55 + 135

f(7) = 190

f(8) = f(1) + f(7)

f(8) = 55 + 190

f(8) = 245

f(9) = f(1) + f(8)

f(9) = 55 + 245

f(9) = 300

8 0
3 years ago
Swati was doing research for a geography report about the Great Lakes. She read that the area of Lake Erie is 4.98 • 10^3 square
VLD [36.1K]
She should write it as 4,980 on her report.
8 0
3 years ago
Need help with number 24 plz!
morpeh [17]

Answer:its 23{#%]*73

Step-by-step explanation:

Because its that

5 0
3 years ago
6×1(4+7)÷8×19(7-13)<br><br>solve and the correct answer wins the Brainlist​
alukav5142 [94]

Answer:

-940.5

Step-by-step explanation:

3 0
2 years ago
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Find the Equivalent Ratio <br> 3:6 x:3
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X= 1.5

Half of 3 is 1.5
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