Find the sum of the first twelve terms of the sequences 3, -6, 12, -24,..
Show your work.

Answers

Answer 1
if we look at the pattern, we have

let x = 3

x, -2x, 4x, -8x etc


which means what we need is

x + 4x + 16x + 64x, 256x, 1024x - 2x - 8x - 32x - 128x - 512x - 2048x

This is equal to -4113.
Answer 2

Answer:

3, -6, 12, -24, 48, -96, 192, -384, 768, -1536, 3072, -6144...

×-2

Geometric sequence


Related Questions

I need helppp plzz
i'll brainliest

Answers

Answer:

Step-by-step explanation:

Since B is the midpoint, AB must be equal to BC.

AB = BC

7x - 4 = 3x + 32

Isolate the variable

7x - 4 = 3x + 32

4x = 36

x = 9

Now solve for one side.

AB = 7x - 4

AB = 7(9) - 4

AB = 59

Since both sides are equal, finding AC just means multiplying one side by 2.

AC = AB * 2

AC = (59) * 2

AC = 118

You can double check by finding the other side and multiplying by 2.

BC = 3x + 32

BC = 3(9) + 32

BC = 27 + 32

BC = 59

AC = BC*2

AC = 59*2

AC = 118

Let me know if you have any questions!

(2.1 x 10^2) x (3.0 x 10 ^4)

Answers

Answer: 6,300,000

Step-by-step explanation:

First solve the expressions in the parenthesis using PEMDAS or GERMDAS or any other one it would be simplified to

(2.1 x 100) x (3.0 x 10000)

210 x 30000

6,300,000

Can someone explain how the following Matrix can be multiplied? I thought the column of the first matrix had to match the row of the second and the row of the first had to match the column of the second. I how the matrices listed below as (1x3) and (3x3) respectively. Yet my online Pre-cal course says it's possible. Please explain why this is so.

Answers

You are correct in thinking that the columns of the first matrix must match with the rows of the second matrix.

So for example, we can multiply a 1 x 5 matrix with a 5 x 7 matrix. The two matching '5's are directly what make multiplication possible in this case. For your problem, the first two '3's match and multiplication is possible.

The rows of the first matrix don't need to match with the columns of the second matrix.

A different store needs to make at least $20,000 to make a profit in March. They average $685 a day for the month. James used rounding and estimation to say, “$685 is almost $700. $700 × 30 days is $21,000. I think it is going to be a close call!” What do you think?

Answers

Look at this . This will make you forget about the question .

4y²=49 solve the equation​

Answers

y = 3.5

steps:
divided both sides by 4
y^2 = 12.25
square 12.25
= 3.5
Solution:

[tex]4y ^{2} = 49 \\ = > {y}^{2} = \frac{49}{4} \\ = > {y} = \sqrt{ \frac{49}{4} } \\ = > y = \frac{ \sqrt{49} }{ \sqrt{4} } \\ = > y = \frac{7}{2} \\ = > y = 3.5[/tex]

Answer:

y = 3.5

The square of the sum of two consecutive positive even integers is greater than the sum of their squares by 48. Find the two integers.​

Answers

Answer:

4 and 6 or -6 and -4

Step-by-step explanation:

Let the numbers are 2x and 2x + 2.

We have:

(2x + 2x + 2)² = (2x)² + (2x + 2)² + 484(2x + 1)² = 4x² + 4(x + 1)² + 48(2x + 1)² = x² + (x + 1)² + 124x² + 4x + 1 = x² + x² + 2x + 1 + 122x² + 2x - 12 = 0x² + x - 6 = 0(x - 2)(x + 3) = 0x = 2, x = -3

The numbers are:

4 and 6 or - 6 and - 4

Hey can you help me out with this problem?

Answers

Answer:

10

Step-by-step explanation:

20/2=10 smores

In the coordinate plane, point A(-1,-1) is translated to point A' (-3.-3). Under the same translation, the points B(-4,-4) and C(5.-5) are translated to B' and C' respectively. What are the coordinates of B' and C'?

Answers

Answer:

B' (- 6, - 6 ) , C' (- 7, - 7 )

Step-by-step explanation:

Consider the coordinates of A and A'

A (- 1, - 1 ) , A' (- 3, - 3 )

- 1 to - 3 in both the x and y direction means subtracting 2 units , then

translation rule is

(x, y ) → (x - 2, y - 2 ) , then

B (- 4, - 4 ) → B' (- 4 - 2, - 4 - 2 ) → B' (- 6, - 6 )

C (- 5, - 5 ) → C' (- 5 - 2, - 5 - 2 ) → C' (- 7, - 7 )

PLEASE HELP I KNOW I DONT HAVE THAT MUCH POINTS BUT NOBODY HAS HELPED ME WITH THIS :C I'LL GIVE BRAINLIEST 5 STARS AND A THANKS ITS DUE SOON SO THANKS IF U HELPED :C

Answers

Answer:

Step-by-step explanation:

Simplest way to do this?

Plug a point in each equation given.

Point I'm using: (1, 5650)

Mateo's Equation: y= 125x+5775

5650= 125(1)+5775

5650=5900

False. His equation is not correct.

Do this for the rest of equations.

120-20/10+2
help quick due in 10 min

Answers

[tex]120 - \frac{20}{10} + 2 \\ 120 - 2 + 2 \\ = 120[/tex]

Answer:

120

Step-by-step explanation:

120-20/10+2

=120-2+2

=120

PLZ HELP...........................................

Answers

Answer:

y=x-2+√3

Step-by-step explanation:

I'm not sure keep it up

5/14 x 4/7 in the simplist form

Answers

It is 10/49 it can’t be simplified further please mark me brainliest

Answer:

10/49

Step-by-step explanation:

make it (5)(4)/(14)(7)

20/98

divide it by the greatest common factor, 2

10/49

20 POINTS PLEASE HELP ASAP!

Answers

Answer: increasing . . . positive . . . 2

Step-by-step explanation:

As best as I can tell . . .:

increasing . . . positive . . . 2.

The equation describing this line is y = 2x + 2

It has a positive (increasing) slope of 2 (with a y-intercept of +2).

Kyle, Meg & Dan share some money in
the ratio 3:2:7
What fraction of the money does Meg get?

Answers

Answer: 1/5 of the money

Step-by-step explanation:

The ratio shows that Kyle gets 3 parts of the money, Meg gets 2 parts of the money, and Dan gets 7 parts of the money.  Simple addition lets us know there are 10 parts of the money, and because Meg got 2 of them, she has 2/10ths of the money, or 1/5.

Hope it helps :) and let me know if you want me to elaborate.

hi please help :)????​

Answers

there's not information for me to help. what are the choices in the word box?

jasmine's cell phone company charges her $35 for the month plus an additional $1.50 for everyday she goes over her data. this month, she was charged $44. how many days did she go over her data?

Answers

Answer:

6 days

Step-by-step explanation:

$44 - $35 = $9

$9/$1.50 = 6 days

add the expression (1/4x - 4 + 2y) + (2/5x + 5 - 4y)

Answers

Answer:

=  13/ 20 x  −  2y+1

Here's your answer, I hope you enjoy.

3 over 7 = blank over 35

Answers

Answer:

15/35

Step-by-step explanation:

7 x ? =35

7 x 5 =35

whatever you do to the bottom , you do to top so you times 3 by 5.

3 times 5 = 15, therefore, it is 15/35

Answer:

15 over 35

Step-by-step explanation:

35/7 = 5

5*3 = 15

then:

3/7 = 15/35

4(v + 8) = 40

Which solutions makes this equation true?





1. 2


2. 4

Answers

1. 2 as 4 x 2 is 8 and 4 x 8 is 32 so 32 + 8 = 40
Answer: 2

Let’s try v = 4

4(4 + 8) = 40

PEMDAS says do what’s in the parentheses first so

4 x 12 = 40

Now multiply

4 x 12 = 48 not 40 so it’s not that

Now let’s try v = 2

4(2 + 8) = 40

Do what’s in the parentheses

4 x 10 = 40

So 2 is the answer

PEMDAS is

Parentheses
Exponents
Multiply
Divide
Add
Subtract

Hope this helps

If the diagonals of a rhombus are of length 24 & 32 cm, find the altitude of the rhombus.

a) 15.8 cm
b) 14.2 cm
c) 12 cm
d) 19.2 cm​

Answers

Hello Carousel!

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

If the diagonals of a rhombus are of length 24 & 32 cm, find the altitude of the rhombus.

a) 15.8 cm

b) 14.2 cm

c) 12 cm

d) 19.2 cm

[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]

Please refer to the attached picture for the answers with steps included.

NOTE :-

The sides of a rhombus are equal to each other.The point of intersection of the diagonals (marked as O in the figure) forms 90° angles (which is why we used the pythagoras property to solve the question).Since 0 is the point of intersection, it's also the midpoint of the diagonals. (So, BO = ½ × BD & AO = ½ AC -- we used this to solve the question).

__________________

Hope it'll help you!

ℓu¢αzz ッ

7/8÷2/3= __
can i get only the answer

Answers

Answer:

21/16

Step-by-step explanation:

hope it hepls pa brainlest na din po

Answer:

in fraction= 1 5/16

in decimal = 1.3125

Which is greater 1.44 or 1.2544

Answers

Answer:

1.44

Step-by-step explanation:

Answer:

1.2544

Step-by-step explanation:

It is closer to 1 than the latter.

need help!! I would give you brainliest if it is correct <3

Answers

Answer: No

Step-by-step explanation:

findthe classification schemes of a fungues​

Answers

Step-by-step explanation:

The five true phyla of fungi are the Chytridiomycota (Chytrids), the Zygomycota (conjugated fungi), the Ascomycota (sac fungi), the Basidiomycota (club fungi) and the recently described Phylum Glomeromycota.

Parallel to y= -3/4x + 1 passes through (8,5)

Answers

Answer:

y=-3/4x+11

Step-by-step explanation:

Graph the point and draw a line having -3/4 as a slope and see what the y intercept of that same line is. Then that y intercept goes after the -3/4x in the new equation.

It is first down in a football game. Your team has the ball at your 25-yard marker, and the play is a successful run for 6 yards.

Where does the ball end up? Where is the ball relative to where it started? Use the number line to find the answer.
Enter the correct answers in the boxes.

Answers

Answer:

the ball would be at the 31 yard line, because you are moving 6 yards closer to midfield which would be 50, and the end zone if he ran all the way there would be 69 more yards

the simple interest on $700 for 2 years at 10% is ?​

Answers

Answer:

140

Step-by-step explanation:

∫P=700

∫T=2

∫R=10% after a few calculating you get 140.....the answer is right just sorry for my bad explaining

Hilda adds 5 to a number, then multiplies the sum by negative 2. The result is 6.

Answers

Answer:

The answer would be negative 8 because -8 + 5 = -3 and -3 x -2 = 6

Step-by-step explanation:

The answer would be negative 8 because -8 + 5 = -3 and -3 x -2 = 6

Jada had some dimes and quarters that had a total value of $12.50

Answers

Answer:

1.She has 115 dimes because 0.10*115=11.5 0.25*4=1.00 11.5+1.00=12.5

2.She has 100 dimes because 0.10*100=10.00 and 0.25*10= 2.5 10+2.5=12.5

3.I think they don’t function because quarters are worth more than a dime.

4.he has 40 quarters because 0.25*40=10.00 0.10*25=2.5 10.00+2.5=12.5.

5.She has 38quarters because 0.25*38=9.5 0.10*30=3 9.5+3=12.5

6.Yes they can function because q=dx-12.5

The Questions:

Question 1 - 1 pts

If Jada has 4 quarters, how many dimes does she have?

Question 2 - 1 pts

If Jada has 10 quarters, how many dimes does she have?

Question 3 - 1 pts

Is the number of dimes a function of the number of quarters? If yes, write a rule (that starts with d =...) that you can use to determine the output, d, from a given input, q. If no, explain why not.

Question 4 - 1 pts

If Jada has 25 dimes, how many quarters does she have?

Question 5 - 1 pts

If Jada has 30 dimes, how many quarters does she have?

Question 6 - 1 pts

Is the number of quarters a function of the number of dimes? If yes, write a rule (that starts with q =...) that you can use to determine the output, q, from a given input, d. If no, explain why not.

f(x) = x + 13. Find the inverse of f(x).
O A. f '(x) = (x+13)
O B. f '(x) = x3 + 13
O c. f '(x) = 23 – 13
O D. f '(x) = (2 – 13)"
SUBMI

Answers

The answer should be x-13

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