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Advocard [28]
4 years ago
13

What is the fifth term of the geometric sequence 5,15,45,...

Mathematics
1 answer:
denpristay [2]4 years ago
7 0

Answer:

405

Step-by-step explanation:

This is a geometric sequence, so we need the common ratio and the first term

To find the common ratio, we take the second term and divide by the first term

15/5 =3

The common ratio is 3

We are multiplying by 3 each time

The first term is 5

The formula is

an = a1 * (r) ^ (n-1)  where n is the term number

We want the 5th term

a5 = 5 * (3) ^ (5-1)

a5 = 5 *3^4

    = 5 *81

    = 405

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I am not understanding these problems. Help me, please?
yanalaym [24]

Answer:

I think I know the answer but not 100% sure

Step-by-step explanation:

Step 1: Complete the scatter plot

Step 2: After you get done, submit the answer and see what grade you get.

7 0
3 years ago
2.85 rounded to the nearest hundredth <br> A. 2.861<br> B. 2.849<br> C. 2.842<br> D. 2.805
blagie [28]

Answer:

B) 2.849

Step-by-step explanation:

Given: 2.85 which is rounded to the nearest hundredth place.

To find the number, the thousandth place must be greater than or equal to 5.

Here 2.849 has the thousandth place greater than 5

When we round off 2.849 to the nearest hundredth place, we get

2.85

Therefore, answer is B) 2.849

Hope this will helpful.

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5 0
3 years ago
Read 2 more answers
For a moving object,When. The force acting on the object varies directly with the object's acceleration. When a force of 64 N ac
Tems11 [23]

Answer:

72 N

Step-by-step explanation:

From the question.

Force is directly proportional to acceleration, with the mass of the object constant.

F α a

F = ka

F₁/a₁ = F₂/a₂....................... Equation 1

Where F₁ = Initial force, a₁ = initial acceleration. F₂ = final force, a₂ = Final acceleration.

make F₂ the subject of the equation

F₂ = (F₁/a₁)a₂................ Equation 2

Given; F₁ = 64 N, a₁ = 8 m/s², a₂ = 9 m/s²

Substitute these values into equation 2

F₂ = (64/8)(9)

F₂ = 72 N

5 0
4 years ago
Give all possible names for the line shown.
Andreas93 [3]
I believe that the only combinations would be EF and FE.
7 0
3 years ago
15 x sin(30)=?/15 x 15
Delicious77 [7]

Answer:

The exact value of

sin

(

30

)

sin(30) is

1

2

12.

15

⋅

1

2

15⋅12

Combine

15

15 and

1

2

12.

15

2

152

The result can be shown in multiple forms.

Exact Form:

15

2

152

Decimal Form:

7.5

7.5

Mixed Number Form:

7

1

2

712

Step-by-step explanation:

8 0
3 years ago
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