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Anettt [7]
2 years ago
6

​ g(1)=−19 g(n)=g(n−1)+6 ​ Find an explicit formula for g(n)g(n)g, left parenthesis, n, right parenthesis. g(n)=g(n)=g, left par

enthesis, n, right parenthesis, equals
Mathematics
1 answer:
Artemon [7]2 years ago
5 0

Answer:

g(n) =  6n -25

Step-by-step explanation:

Given:

g(1) = -19

g(n) = g(n - 1) + 6

Required

The explicit formula

Let n = 2; So, we have:

g(n) = g(n - 1) + 6

g(2) = g(2 - 1) + 6

g(2) = g(1) + 6

g(2) = -19 + 6

g(2) = -13

So, we have:

g(1) = -19 ----- First term

g(2) = -13

Calculate common difference (d)

d = g(2) - g(1)

d = -13 --19

d = 6

The explicit function is then calculated as:

g(n) = a + (n - 1)d

Where

a = -19 --- First term

So:

g(n) = a + (n - 1)d

g(n) = -19 + (n - 1)*6

Open bracket

g(n) = -19 + 6n - 6

Collect like terms

g(n) =  6n - 6-19

g(n) =  6n -25

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THow much will fencing cost to enclose a field that is 725 feet by 1,021 feet if fencing costs $13.57 per foot? $47,386.44 $23,6
iogann1982 [59]

Answer:

$47,386.44

Step-by-step explanation:

Given;

Dimension of the field = 725 feet by 1,021 feet

Length = 1021 ft

Breadth = 725 ft

Cost per foot = $13.57 per foot

Perimeter of the field = 2 × (length + breadth)

Perimeter = 2 × ( 1021 + 725) = 3492 ft

The cost of fencing the field is;

Cost per feet × perimeter

= $13.57 × 3492

= $47,386.44

6 0
3 years ago
What does 8 - d stand for as in, 8 less than d, or d less than 8
Nimfa-mama [501]

Answer:

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Step-by-step explanation:

3 0
2 years ago
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3 years ago
What is a35 for the arithmetic sequence presented in the table below?
Kryger [21]

Answer: choice B) a35 = -118

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

Explanation:

When n = 5, an = 32 as shown in the first column of the table. This means the fifth term is 32. Plug in those values to get

an = a1+d(n-1)

32 = a1+d(5-1)

32 = a1+4d

Solve for a1 by subtracting 4d from both sides

a1 = 32-4d

We'll plug this in later

Turn to the second column of the table. We have n = 10 and an = 7. Plug those values into the formula

an = a1+d(n-1)

7 = a1 + d(10-1)

7 = a1+9d

Now substitute in the equation in which we solved for a1

7 = a1+9d

7 = 32-4d+9d ... replace a1 with 32-4d

7 = 32+5d

5d = 7-32

5d = -25

d = -25/5

d = -5

This tells us that we subtract 5 from each term to get the next term.

Use this d value to find a1

a1 = 32-4d

a1 = 32-4*(-5)

a1 = 32+20

a1 = 52

The first term is 52

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

The nth term formula is therefore

an = 52 + (-5)(n-1)

which simplifies to

an = -5n + 57

To check this result, plug in n = 5 to find that a5 = 32. Similarly, you'll find that a10 = 7 after plugging in n = 10. I'll let you do these checks.

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

Replace n with 35 to find the 35th term

an = -5n + 57

a35 = -5(35) + 57

a35 = -175 + 57

a35 = -118

7 0
3 years ago
i need to find the area of a rectangle using the formula A=b*h the height is 810 cm the base is 10 meters...i know i need to con
leva [86]

Answer:

81000cm^{2}  or   8.1m^{2}

Step-by-step explanation:

1m = 100cm

10m = 1000cm

a= b*h

a= 1000cm * 810cm

= 810000cm^{2}

1m^{2} = 10000cm^{2}

810000cm^{2} = 8.1m^{2}

7 0
3 years ago
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