Write an explicit formula for a , the nth term of the sequence 7, 14, 28, ...

Answers

Answer 1

Answer:

The sequence 7, 14, 28, ... is a geometric sequence with first term 7 and common ratio 2. The explicit formula for a geometric sequence is a_n = a_1 r^(n-1), where a_n is the nth term, a_1 is the first term, and r is the common ratio. In this case, a_n = 7 (2)^(n-1).

Here are the first few terms of the sequence:

n = 1: a_1 = 7

n = 2: a_2 = 14

n = 3: a_3 = 28

n = 4: a_4 = 56

n = 5: a_5 = 112

As you can see, the formula works for all values of n.

Step-by-step explanation:

Related Questions

Please help meeeeeee URGENT

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Answer:

Step-by-step explanation:

The first one is 1 over 125

The second one is -1 over 125

The third one is -125

The fourth one is 1

Answer:

The first one is 1 over 125

The second one is -1 over 125

The third one is -125

The fourth one is 1

Step-by-step explanation:

What is the volume of the prism?

How many cubes with a side length of 13 yard fit into the rectangular prism below?

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1. 17 7/9yd cubic
2. 69 1/3 yd cubic

help me again plzzzz
decimals
whats 389.5 divided by 10 with the power of 4.

Answers

Answer:

25.67

Step-by-step explanation:

10 to the power of 4 is 10,000.

That means we have to do 10,000 divided by 389.5, getting 25.67

Plz Brainliest, need 4 more to get to Expert :)

Answer:

Your answer would be 0.03895

Step-by-step explanation:

Help me please!! this is 5th grade work!!

Answers

Answer:

Im not sure

Step-by-step explanation:

21 1/10-5 1/4
the answer is 15 17/20 or 15.85

please help,will give Brainliest

Answers

Answer:

Step-by-step explanation:

i need money

guys need help asap plz ill give brainliest to first person that is correct. you put the answer for 1c and 2 below. I just need the answers plz help. AND DONT ANSWER FOR POINTS OR I WILL REPORT YOU. please i beg you i have lost hundreds of points because of people who do that.

Question 1: Consider: y = x squared - 6x + 4
a) Write the equation of the axis of symmetry.
b) Find the coordinates of the vertex. Is it a maximum or minimum?
c) Graph the function.

Question 2) Solve by graphing: x squared + 4x+6 = 0

Question 3) Describe how the graph of each function is related to the graph of f(x) = x squared.
a) g(x) = x squared +3
b) g(x) = -x squared - 1

guys i really need this. for number 1c and 2, can you take a picture of the graph you made if you did. I appreciate all help but try to do as much as you can. plz plz plz plz.

Answers

Answer:

Step-by-step explanation:

Vertex = 3,-5

line of symmetry = x = 3

Its a minimum

Answer: maybe a and c

Step-by-step explanation:

If you add Natalie's age and Fred's age, the result is 42 . If you add Fred's age to 4 times Natalie's age, the result is 84 . Write and solve a system of equations to find how old Fred and Natalie are.

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Answer:Fred is 28 and Natalie is 14

There both 21
21x4=84

what is this please please please

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Answer:

first graph the points, then count the boxes

Step-by-step explanation:

I need help with this please. Thanks !!

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Why does your screen look like that

This is all I got hope it helps

Twelve of the students in the school choir like to sing solos. These 12 students make up 24% of the choir. How many students are in the choir?

A.100
B.50 students
C.12.5
D.24

Answers

Answer:

50 Students

Step-by-step explanation:

24% = 0.24

12/total amount of students = 0.24

12/0.24 = total amount of students

total amount of students = 50

Twelve of the students in the school choir like to sing solos. These 12 students make up 24% of the choir. How many students are in the choir?

B.50 students

Which of the following graphs shows a proportional relationship?

Choose all answers that apply

Answers

A, because of the straight light it goes through the origin

The answer is A cuz yeah

At a cat show, 60% of the cats had long hair. There were 168 cats with long hair in the show. How many cats were in the show?

A.280
B.168
C.340
D.100.8

Answers

D
Do 60/100 x 168 on ur calculator and u get the answer

I think the answer is D :)

HELP QUICKLY!DONT SAY 3 BECAUSE THERE IS 2 SLOTS NOT 1 SO ITS NOT 3

Answers

Answer:

4 on top three on bottom?

Step-by-step explanation:

Answer:

Hate to break it to you, but it actually is 3

Step-by-step explanation:

You need to make sure 3/4 is equal to the fraction.

It doesn't matter how many slots there are.

The fraction that it's going to be equal to is 9/12

To get the 12 on the bottom, you need to multiply the 4 by 3

Because you want to get an equivalent expression, you have to the same thing to the top. So 3 x 3 is 9.

Both slots are going to have a 3 in it

If you were solving for y what would the first step? -5=y-7/9

Answers

Answer:

-38/9

Step-by-step explanation:

-5=x-7/9

-5+(7/9)=x-(7/9)+(7/9)

x=-5+(-7/9)

x=(-38/9)

The answer is ( -38/9)

Determine the volume of a cone to the nearest tenth, if the diameter of the base is 50.8 centimeters and the cone is 76.2 centimeters tall.

Answers

Answer:51455.4

Step-by-step explanation:

which is the best place to buy chips

Answers

The answer is store D because a bag of chips cost the least which that would be 1.25 for 1 bag.

GIVING THANKS AND BRAINLIEST FOR BEST ANSWER <3
::::::::

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Answer:

Step-by-step explanation:

look closely at the graph pretend the first side is looking through a mirror.

When finding the unit rate, the words per and each tell us what unit of measure needs to equal ONE. True or False

Answers

Answer:

true

Step-by-step explanation:

Angles X and Y form a straight line. Angles W and Z form a straight line. Angles X and W are beside each other. Angles Y and Z are beside each other.
Which of the following statements are true about the angles in the figure? Select all that apply.
∠X and ∠Z are vertical angles.
∠X and ∠Y are a linear pair.
∠W and ∠Z are supplementary.
∠Y and ∠Z are supplementary.
∠W and ∠X are adjacent.

Answers

Answer: B, C, and E

Step-by-step explanation:

Answer:

B, C, and E

Step-by-step explanation:

Got it right :D

Which expression is equivalent to –0.25x + 1.5 – 0.5x - 2?

A.–0.75x – 4

B.–0.75x + 3.5

C.–0.75x – 8

D.–0.75x – 0.5

Answers

Answer:

Its D :3

Step-by-step explanation:

Thomas has $30 to spend at the amusement park. Rides cost $2 each and admission at the gate is $6. What is the maximum number of rides that Thomas can go on?
A.2r + 6 < 30

B.2r + 6 = 30

C.6r + 2 = 30

D. 6r + 2 > 30

Answers

Answer:

B.2r+6=30

Explanation:

It costs $6 dollars just to get in. Subtract 6 from 30. 30-6=24

Divide 24 by 2. 24 divided by 2 equals 12.

Let the number of rides = r

Multiply the price per ride by number of rudest over 2r, you then add the admission to that to get 2R + 6

He has $30 so the total he can spend has to be less than or equal to $30

2r + 6 <= 30

The closest answer is A.

giving thanks and brainliest for best answer <3
~::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::~

Answers

Answer:

Step-by-step explanation:

Answer:

its A. or is it

Step-by-step explanation:

oooooo

Find the value of x please help dont know math at all

Answers

B. 14 is your answer. Just divide 140 and 10 to find the value and that’s going to be your answer.

Answer:

D. 4

Step-by-step explanation:

A straight line equals 180 degrees if there's already 140 degrees then you need 40 more to make the line true so 10 times 4 is 40 to make 140 + 40 = 180 true

Can someone please help me out here

Answers

Answer:

Student 2 did make a mistake.

Step-by-step explanation:

On B, they went from -12 to -2. That's definitely wrong. On A, they went from -1 to -5, which was not following the pattern so far.

Plz Help! If correct will mark brainliest!

If Jesse takes out a loan for $5000, the simple interest on the loan after 10 years is $1500. What is the total amount he will have to repay?

Answers

Check your answer. Is $15.75 a reasonable amount of interest? If Caroline had invested the $900 for a full year at 2% interest, the amount of interest would have been $18. Yes, $15.75 is reasonable.

Step-by-step explanation:

The answer is 15.75 :)

The figure below shows a shaded region and a non-shaded region. Angles in the figure that appear to be right angles are right angles.

What is the area, in square feet, of the shaded region?

What is the area, in square feet, of the non-shaded region?

Answers

I think dark regions

Add.

[120−5−7]+[−3−14−910]

[93−14−14]

[151443]

[9−14−143]

[310−8−21]

Answers

You add each number that is in the same position correlated to the box. Ex: 12+-3=9

Do what is in parentheses first then add them together

Answer both before 2:00 pm today!
Give an example of a compound event.
How do you calculate the probability of a compound event?

Answers

Compound probability is equal to the probability of the first event multiplied by the probability of the second event.

Just multiply the probability of the first event by the second. For example, if the probability of event A is 2/9 and the probability of event B is 3/9 then the probability of both events happening at the same time is (2/9)*(3/9) = 6/81 = 2/27.

Answer:

Compound probability is equal to the probability of the first event multiplied by the probability of the second event.

Please give me brainliest!!

-5(t + 3) = -30

Show your work and I will give you brainlist

Answers

Answer:

t=3

Step-by-step explanation:

First distribute the -5 to the terms inside the parentese and youll get -5t-15=-30

Then add 15 to both sides

-5t=-15

Then divide by -5 on both sides and you're left with t=3

Please help I will give brainly

Answers

Answer:

A) 1/2 pound

Step-by-step explanation:

The Answer is A: 1/4 pounds.

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