An infinite geometric series contains consecutive terms 262.4, 209.92, 167.963 and the sum is 1640. What is the first term?​

Answers

Answer 1

Answer:

328

Step-by-step explanation:

[tex]\frac{a}{1-r}[/tex] is the equation for the sum of an infinite geometric series, where [tex]a[/tex] is the first term of the infinite geometric series, and r is the common ratio between the terms. Here, we can find the common ratio between any consecutive terms. [tex]\frac{209.92}{262.4} = \frac{4}{5}[/tex]

Therefore, [tex]\frac{a}{1-\frac{4}{5}} = 1640[/tex].

This simplifies to [tex]5a = 1640[/tex]

Therefore, [tex]a = 328[/tex]


Related Questions

Plz Help and Thank you :/

Answers

Answer:

I believe c is correct

Jamie and Ryan work at the grocery store. The wages earned for the weekend are shown in the table and graph. Who gets paid more per hour
plz answer right away

Answers

Answer:

Ryan earns more per hour.

Step-by-step explanation:

1) 40/5=$8.00 per hour for jamie

2)8.50/1=$8.50 per hour for ryan.

3)8.50>8.00

2. C is at (-5.1) & D is at (7.6). Where is the midpoint on segment CD?​

Answers

Answer:

1.25

Step-by-step explanation:

Find the average.

-5.1+7.6=2.5

2.5/2

1.25

Scott and Nikki each have a full 1.5-gallon container of liquid laundry detergent. The lid on Scott's container can hold 3 fluid ounces of detergent, while the lid on Nikki's container can hold 4 fluid ounces of detergent. How many more lids full of detergent does Scott have than Nikki? 10 lids 16 lids 48 lids 64 lids

Answers

Given:

Scott and Nikki each have a full 1.5-gallon container of liquid laundry detergent.

Lid on Scott's container can hold 3 fluid ounces of detergent.

Lid on Nikki's container can hold 4 fluid ounces of detergent.

To find:

The number of lids full of detergent Scott have more than Nikki.

Solution:

We know that,

1 gallon = 128 fluid ounces

1.5 gallon = 192 fluid ounces

Lid on Scott's container can hold 3 fluid ounces of detergent. So, number of lids full of detergent Scott have is

[tex]\dfrac{192}{3}=64[/tex]

Lid on Nikki's container can hold 4 fluid ounces of detergent.  So, number of lids full of detergent Nikki have is

[tex]\dfrac{192}{4}=48[/tex]

Difference between number of lids is

[tex]64-48=16[/tex]

Therefore, Scott have 16 lids more than Nikki. Hence, the correct option is B.

Answer: it is 16

Step-by-step explanation:

Jason bought 10 of the 30 raffle tickets for a drawing. What is the probability that Jason will win all 3 of the prizes if once a raffle ticket wins a prize it is thrown away? StartFraction 6 over 203 EndFraction StartFraction 1 over 27 EndFraction StartFraction 3 over 29 EndFraction StartFraction 1 over 9 EndFraction

Answers

Given:

Total of raffle tickets = 30

Number of tickets Jason bought = 10

Number of prizes = 3

To find:

The probability that Jason will win all 3 of the prizes if once a raffle ticket wins a prize it is thrown away.

Solution:

Total of raffle tickets = 30

Number of prizes = 3

So, number of total outcomes is

[tex]n(S)=^{30}C_3[/tex]

Number of tickets Jason bought = 10

So, number of favorable outcomes is

[tex]n(A)=^{10}C_3[/tex]

Now,

[tex]\text{Probability}=\dfrac{\text{Favorable outcomes}}{\text{Total outcomes}}[/tex]

[tex]\text{Probability}=\dfrac{n(A)}{n(S)}[/tex]

[tex]\text{Probability}=\dfrac{^{10}C_3}{^{30}C_3}[/tex]

[tex]\text{Probability}=\dfrac{\dfrac{10!}{(10-3)!3!}}{\dfrac{30!}{(30-3)!3!}}[/tex]

[tex]\text{Probability}=\dfrac{10\times 9\times 8\times 7!}{7!3!}\times\dfrac{27!3!}{30\times 29\times 28\times 27!}[/tex]

[tex]\text{Probability}=\dfrac{10\times 9\times 8}{30\times 29\times 28}[/tex]

[tex]\text{Probability}=\dfrac{6}{203}[/tex]

Therefore, the correct option is A.

Answer:

The correct answer is A. 6/203

If 2.2 pounds of a certain grain cost $1.54, how much will 5.7 pounds of the grain cost? A. $4.38
B. $4.79
C. $3.62
D. $3.99

Answers

It's D, you have to divide 1.54$ by 2.2pounds, then you will get the price for 1 pound. And then multiply the price (0,7$) by 5,7 pounds

The cost of 5.7 pounds of the grain is given by the proportion A = $ 3.99

What is Proportion?

The proportion formula is used to depict if two ratios or fractions are equal. The proportion formula can be given as a: b::c : d = a/b = c/d where a and d are the extreme terms and b and c are the mean terms.

The proportional equation is given as y ∝ x

And , y = kx where k is the proportionality constant

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Given data ,

Let the proportion be represented as A

Now , the value of A is

We can use a proportion to solve this problem. Let "A" be the cost of 5.7 pounds of the grain. Then we can write:

2.2 pounds / $ 1.54 = 5.7 pounds / A

To solve for "A", we can cross-multiply and simplify:

2.2 pounds x A = $ 1.54 x 5.7 pounds

A = ($ 1.54 x 5.7 pounds) / 2.2 pounds

A = $ 3.99

Hence , 5.7 pounds of the grain will cost $ 3.99

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Simplify the following expression. 7^-5/6*7^-7/6

Answers

Answer:2.0068782e-12

Step-by-step explanation:

Ten oranges are to be shared between two boys in the ratio 1:4 how many will each boy get​

Answers

Answer:

2 and 8

Step-by-step explanation:

Well. Boy A gets 1 orange, so the other must get 4. So say boy A gets 2 oranges now, so the other must get also double the amount of oranges, which is 8.

1:4

If you changed the 1 to a 2, you have x2 (you can only x or ÷, in ratio) on the other side. Whatever you do to this side, you do to the other side. So it becomes

2:8

Add the numbers together to find the total number of parts. You get 10 in this ratio, so it must be the answer.

One-third of a number decreased by six equals eight. What is the number?
6
14
24
042

Answers

It's 42.

The equation would be 1/3n - 6 = 8.

Just plug in each number in the place of 'n' then see what actually equals 8.

Korie randomly selects a number from the numbers shown below 54, 60, 11, 0, 5, 7, 20
what is the probability that the number she selected is an even number

Answers

Answer:

I think its 3 out of 7

Graph the equation y(1/2)x using the stope and y-intercept

Answers

C. The one in the bottom left corner. Hope this helps.

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HELPPPP!!!!
4. Mike is making bread for a family reunion. He knows that he needs 5.25 cups of flour per loaf.
A. If mike needs 5 loaves and one smaller half loaf, how much flour will Mike need in all? (6 points)
B. If mike makes a small loaf for himself that is 0.75 times the regular loaf, how much flour will he need? (6 points)

Answers

Answer:

A. 7.87 cups for 5½ loads

B. 3.93 cups for the tiny loaf

Step-by-step explanation:

A. 5.25 divide by 2 = 2.62 (rounded)

5.25 + 2.62 = 7.87

B. 5.25 × 0.75 = 3.93 cups

Every few years, Brendan's entire family gets together for a family reunion. This year,
Brendan's parents are hosting, and they have to cook a lot of food to feed the crowd.
Brendan has volunteered to do the most tedious job:
shelling peas.
There is a proportional relationship between the amount of time (in
minutes)
Brendan spends shelling peas, x, and the weight (in pounds) of the peas he has shelled,
у
х
y
(minutes) (pounds)
2
1
4
2
6
3
12
6
What is the constant of proportionality? My

Answers

Answer:

k = 0.5

Step-by-step explanation:

There is a proportional relationship between the amount of time in shelling peas 'x' and the weight of the peas 'y'.

Therefore, y ∝ x

⇒ y = kx

Here, k = proportionality constant

From the given table,

If family spends the time 2 minutes (x-value) in shelling 1 pound of peas (y-value),

1 = k × 2

k = [tex]\frac{1}{2}[/tex]

k = 0.5

Therefore, proportionality constant for the relationship is 0.5.

Find the measure of the missing angles.

Answers

Answer:

d =  103

e =  22

f = 55

Step-by-step explanation:

ok so the angles on the other side 22 and 103 are equal to 2 of the angles on the other side

the whole line is equal to 180

103 + 22 = 125

180 - 125 = 55

d =  103

e =  22

f = 55

Answer:

d = 103

e= 22

f= 55

Step-by-step explanation:

the opposite side of d equals 103 and they are adjacent which means they have the same measure

same goes to e the opposite side of it equals 22

and then for f a full line measure equals 180

so 103+22= 125

180-125= 55

there you have it :)

What is the reflection of K and L and M and N

Answers

K’: (0, 1)

L’: (-3, 1)

M’: (-2, 3)

N’: (-1, 3)

You are reflecting across the x = 2, so the line is vertical on 2 like |. It’s as many points away on each side for the other side. Ex. K is 2 points to the right of x = 2 so then it would be 2 points to the left of x = 2.

Kenneth is 10 years older than Andrew. Billy is 2 times as old as Andrew. Cameron is 8 years younger than Andrew. The combined age of the four is 77. How old is each boy?​

Answers

Answer:

[tex]a=15\\b=30\\c=7\\k=25[/tex]

Step-by-step explanation:

[tex]77=a+k+b+c[/tex]

[tex]b=2a[/tex]

[tex]c=a-8[/tex]

[tex]k=10+a[/tex]

[tex]77= a+2a+(a-8)+(a+10)[/tex]

[tex]77=3a+(2a+2)\\77-2=3a+2a\\75=5a\\[/tex]

For the equation y+1= -3(x-5) the line contains the point (5,-1) and has a slope of?

Answers

Answer:

I think its (0,-3)

Step-by-step explanation:

I took the coordinates you gave me and placed they X axis where the X was and put the Y axis where the Y was and got that answer

The required slope of the line is -3 for the equation y + 1 = -3(x-5) the line contains the point (5,-1).

What is the slope of the line?

The equation for a line in slope-intercept form is given by y = mx + b, where m is the slope of the line and b is the y-intercept (the point where the line crosses the y-axis).

To put the equation y + 1 = -3(x - 5) into slope-intercept form, we need to solve for y. We can do this by subtracting 1 from both sides of the equation, which gives us y = -3(x - 5) - 1. We can then distribute the -3 on the right side of the equation to get y = -3x + 15 - 1. Finally, we can simplify this to get y = -3x + 14.

In this equation, m = -3 and b = 14. We can verify that this is the correct equation by substituting the coordinates of the point (5,-1) into the equation and solving to see if the equation is true. When we substitute the values into the equation, we get -1 = -3(5) + 14, which is true.

Therefore, the slope of the line is m = -3.

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Last year 42 new houses were built in a neighborhood. So far this year 5/7 of them have been sold. How many new houses have been sold this year?

Answers

Answer:

30

hope this helps.

Answer:

35 houses

Step-by-step explanation:

why do terms have to be like terms?

Answers

Answer:

Like terms are terms that contain the same variables raised to the same power. Only the numerical coefficients are different. In an expression, only like terms can be combined. We combine like terms to shorten and simplify algebraic expressions, so we can work with them more easily.

5x999 dghdiuhfuidfuewyf

Answers

Answer:

5x999 urfiwbyginwgf fjkwfg8

Step-by-step explanation:

you take the 5 by x by 999 and kvbbci then you are supposed to uibjouwfbc by owihefojw and oiwhjwnfwfb

Answer:

4995

Step-by-step explanation:

Because

999

x    5

4995

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If the area of the rectangle is given by the polynomial 2x^2-7x-15, what is the dimension of the reactangle in terms of x?​

Answers

Answer:

x - 5 and 2x + 3

Step-by-step explanation:

GivenArea of rectangle = 2x^2 - 7x - 15To findDimensions of rectangleSolution

Since the area is the product of the sides, let's try to factorize the given:

2x^2 - 7x - 15= 2x^2 - 10x + 3x - 15 =2x(x - 5) + 3(x - 5) =(x - 5)(2x + 3)

So the dimensions are:

x - 5 and 2x + 3

N+4-9-5n help me help me help me

Answers

Answer:

-4n - 5

General Formulas and Concepts:

Combining like terms

Step-by-step explanation:

Step 1: Write expression

n + 4 - 9 - 5n

Step 2: Simplify

Combine like terms (n):                              -4n + 4 - 9Combine like terms (constants:                 -4n - 5

What is the value of x in the equation (4x – 1) - 3x =
<= -(x + 2)?
1 3 19
16 16 16
3
X =

Answers

Answer:

Step-by-step explanation:

x − 1. _. 3. = 3 by 3 gives x − 1 = 9 and then adding 1 to both sides of x − 1 = 9 gives x = 10. Choices A, B ... written as the equation 16 + 4x = 10 + 14, which is equivalent to 16 + 4x = 24. Subtracting

The product of three and a number is thirty

Answers

Answer:

10

Step-by-step explanation:

3 times 10 equals 30

The answer is 10

Explaination:
3x=30
3•10=30
X=10

!!45 points!! True or false;

A quadratic graph cannot show more than one translation, reflection, stretch or shrink at a time, from the graph of the parent function.

Answers

Answer:

I believe that is true

Step-by-step explanation:

False, a quadratic graph can show more than one translation of the parent function.

what is the next. three numbers for 12 14 13 15​

Answers

Answer:

16,17,18,

Step-by-step explanation:

:D im so smart

Answer:

14 16 15 17 16 18

Step-by-step explanation:

Length breadth and height of a room are 5 metre 4 metre and 4 metre Calculate its area​

Answers

Answer:

Area = L x B

= 5m x 4m =20m square

pls help!! 15 points! What are the minimum and maximum values of t for which |t + 3| ≤ 2?

Minimum=
Maximum=

Answers

Answer:

Minimum: x<-1

Maximum: x> 1

both are also equal to i just don’t have the sign


93 is what percent of 620?
%

Answers

Answer:

15%

Step-by-step explanation:

Answer:

15%

Step-by-step explanation:

At one gym, there is a $12 start-up fee, and after that each month, m, at the gym costs $20. At another gym, each month at the gym costs $22. After how many months will the cost of both gyms be the same? =

Answers

6 weeks
Because 132/22=6 and 132-12/20=6
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