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mixer [17]
3 years ago
8

Can someone help me i am confused

Mathematics
1 answer:
hammer [34]3 years ago
5 0

Answer:

3. 2

4. f(n) = 3 + 4(n - 1)

Step-by-step explanation:

3. The general term of the arithmetic sequence is given by:

                                    A(n) = - 14 + (n - 1)(2)

To find the ninth term of this arithmetic sequence, just put $ n = 9 $ in the general term.

∴ A(9) = - 14 + (9 - 1)(2) = - 14 + 8(2) = -14 + 16 = 2.

Therefore the ninth term in the arithmetic sequence is two.

4. To know which expression represents the given sequence, substitute different values for $ n $ to conclude.

In Option A, f(n) = 4 + 3(n - 1). Substitute n = 1.

We get f(1) = 4 + 3(0) = 4. This is not the first term in the sequence and can be eliminated.

In Option B, f(n) = 4 + 3n. Substitute n = 1.

We get f(1) = 4 + 3(1) = 7, not 3 so can be eliminated.

Similarly in Option C, we get 7 and could be eliminated.

In Option D, f(n) = 3 + 4(n - 1). Substitute n = 1.

We get f(1) = 3 + 4(1 - 1) = 3, which is the first term in the sequence.

Similarly, f(2) = 3 + 4(2 - 1) = 3 + 4 = 7.

Substitute n = 3, 4 to get other terms as well.

So, we say f(n) = 3 + 4(n - 1) is the representation of the given arithmetic sequence.

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vichka [17]

Answer:

>60

Step-by-step explanation:

The difference in miles is 0.25 per mile. Because there is 15$ difference in initial payment then after 60 miles (60x0.25=$15) A will be better option. At $60 A and B are same and lower than B is better

5 0
2 years ago
A county is in the shape of a rectangle that is 40 miles by 30 miles and has a population of 50,000. What is the average number
denis-greek [22]

Answer:

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5 0
3 years ago
[HELPPPP] tan is op/adj, i just need the fraction form so would it be 8/15?
ivanzaharov [21]
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6 0
2 years ago
Work out (10-3 x 2) to the power of 2
Leno4ka [110]

Answer:

16

Step-by-step explanation:

parentheses first: 10-6 which is 4^2 or 16.

Hope this helps :D

8 0
2 years ago
What does h(40) = 1700 mean in terms of the poblem?
choli [55]

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So for 40 hours of training the person would make $1700.


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6 0
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