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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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Determine the value of x in the figure
goblinko [34]
I think it’s B x = 137
4 0
3 years ago
An advertising company charges $60 per half-page advertisement and $100 per full-page advertisement. Michael has a budget of $13
krek1111 [17]

Answer:

The number of half-page advertisements is 4.

The number of Full-page advertisements is 11.

Step-by-step explanation:

According to the Question,

  • Given, An advertising company charges $60 per half-page advertisement and $100 per full-page advertisement. Michael has a budget of $1340 to purchase 15 advertisements.

Let, 'x' be the number of half-page advertisements and 'y' be the number of full-page advertisements.

  • Thus, 60x + 100y is the money charged, and given that he has a budget of $ 1340.

       60x + 100y = 1340

  • And, the number of advertisements is 15. So, the other equation is

       x + y = 15

Now, We have Two Equations,

60x + 100y = 1340 and x + y = 15

  • the solution of the system is Put x=(15-y) in Equation 60x + 100y = 1340

60 (15-y) + 100y = 1340

900 - 60y + 100y = 1340

40y = 1340 - 900

40y = 440

y = 440/40

y = 11 So, For x = 15 - y ⇒ 15-11 ⇒ x=4 .

  • Thus, the number of half-page advertisements is 4 and The number of Full-page advertisements is 11 .
6 0
2 years ago
Help Asap on both question!! will mark Brainliest!
earnstyle [38]

Answer: Answer for 27 , It dropped 38 feet, (down) so -38 feet

Answer for 28, The difference between 4 and -7 is 11

Step-by-step explanation:

25 + 13 = 38 (but it was going down so its negative)

4 + 7 = 11

3 0
3 years ago
Pls help me I neeed help plssssss
Ierofanga [76]
I believe it could be the third answer.
8 0
3 years ago
Read 2 more answers
Gets Brainliest and 11pts!
belka [17]

Volume sphere A V1 = (4/3)πR³

R=∛((3/4)V1/π)

Volume sphere B V2= (4/3)πr³

r=∛((3/4)V2/π)

R-r = ∛((3/4)40/π) - ∛((3/4)10/π) ≈ 0.8 inch

Answer C. 0.8 inch.

7 0
3 years ago
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