Which of the following is a geometric series? 40 50 60 70 40 42 44 46 40 80 40 120 40 20 10 5

Answers

Answer 1

The given series  40 + 20 + 10 + 5 is a geometric series.

What is the geometric series?

The geometric series the ratio of consecutive terms is equal and the ratio is called the common ratio of the geometric series.

Let us find the ratio of consecutive terms of each of the given series.

For the series 40 + 50 + 60 + 70

50/40 = 5/4

60/50 = 6/5

Since, 5/4 ≠ 6/5 hence, it is not a geometric series.

For the series 40 + 42 + 44 + 46

42/40 = 21/10

44/42 = 22/21

Since, 21/10 ≠ 22/21 hence, it is not a geometric series.

For the series 40 + 80 + 40 + 120

80/40 = 2

40/80 = 1/2

Since, 2 ≠ 1/2 hence, it is not a geometric series.

For the series 40 + 20 + 10 + 5

20/40 = 1/2

10/20 = 1/2

Since, 1/2 = 1/2 hence, it is a geometric series.

Therefore, D is the correct option.

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Related Questions

For what value of x is the equation 2(x-12)+x=36

Answers

[tex]~~~~~~2(x-12)+x=36\\\\\implies 2x-24+x = 36\\\\\implies 3x = 36+24\\\\\implies 3x = 60\\\\\implies x = \dfrac{60}3\\\\\implies x = 20[/tex]

2(x+12)+x=36

or,2x+24+x=36

or,3x+24=36

or,3x=36-24

or,3x=12

or,x=12/3

or,x=4

Thus, 20 is your answer

transtle (-2,-2) up 1 unit then reflect the result over the x axis what are the coordinates of the final point

Answers

Answer:

(-2,1)

Step-by-step explanation:

1 unit up will change the y-value as it is moving vertically. Will make it (-2,-1)

Then, reflecting over x-axis means x-value stays the same and the sign of y-value switches.

so,

(-2,1)

A bag contains 5 red crayons, 4 blue crayons, and 6 green crayons. A crayon is randomly selected, its color is recorded, and it is returned to the bag. This is repeated 750 times.

How many times is it expected that a blue crayon will be selected?

Answers

Answer:200

Step-by-step explanation: There are 15balls and the probability of picking a blue ball once is 4/15

The ball is returned and repeated 750 Times. Multiply 4/15 by 750

A 200Answer:

Step-by-step explanation:

find the area of given trapezium which save height is 3 cm and p1 is 12 cm and p2 is 24 cm​

Answers

Answer:

Hope the picture will help you.......

In this polygon all angles are right angles what is the area of this polygon

Answers

Answer:

please check photo for detailed explanation

Marcus is buying a car. He borrows $10,000 from the bank at a 9% rate for 5 years. At the end of the 5 years, how much interest does Marcus pay?

Answers

Answer:

$4500 in interest.

Step-by-step explanation:

9% of 10,000 is 900, 900 x 5 is 4500

A swimmer dives 300 feet underwater, swims up 150 feet, and then swims down 50 feet. Which expression describes the scenario correctly?

Answers

Answer:

Your answer would be  -300+150+(-50)

Step-by-step explanation:

A backyard has an area of 64 square feet. What is the smallest possible perimeter of the backyard?

I have been having trouble with width, and perimeter! I cant memorize it all. I need help on that question, and I know I wont get an answer back immediately so, please help me out!

Answers

The answer would be 32 ft.

What is the first step in solving the system shown below using substitution? 2x=y-1 y=3x

Answers

Answer:

you have to solve the first equation for y

Step-by-step explanation:

Step-by-step explanation:

At first put the value of y that is 3x in equation 2x=y-1.

Then put the value of x in equation y=3x that comes from the first solving part.

ILL GIVE BRAINLIEST
Type the correct answer in the box.

Answers

Answer:

1 (one)

Step-by-step explanation:

Answer:

1

----------------------------------------------------------------------------------------------------------

Solve

First things first, evaluate all square roots in order, starting with the square root of 12

3.4641016151377553.1622776601683792.236067977499792.449489742783178

The next step is to divide, despite multiplication always coming before division, you cannot multiply without first knowing the values of the division.

[tex]3.5 / 3.2 = 1.09\\\\2.2 / 2.4 = 1.09[/tex]

Now, you can multiply.

[tex]1.09 * 1.09 = 1.1881[/tex]

That said, 1.1881 is closest to 1 because it has a 1 in the tenths place, the greatest place in a decimal number.

just this one
What percent of your budget is food if your monthly income is $6000 and you spend 900 on food each month?

Answers

Answer:

15%

Step-by-step explanation:

900/6000

which is the same as 900÷6000

900÷6000= 0.15

0.15 as a percent in 15%

A large rectangular card measures 80 centimetres by 90 centimetres.
Maria uses all this card to make small rectangular cards measuring 40 millimetres
by 15 millimetres.
Calculate the number of small cards.

Answers

1200 cards

All measurements should be taken in centimeters

Calculate the area of large rectangular card:

Length * Width 80 * 907200 cm²

Calculate the area of each small cards:

Length * Width4 * 1.56 cm²

Divide the area of large card by area of small card

7200 cm² ÷ 6 cm²1200

Number of small cards: 1200 cards

For bigger rectangle:-

L=90cmB=80cm

Area:-

LB90(80)7200cm²720000mm²

For smaller rectangle

L=40mmB=15mm

Area:-

LB40(15)600mm²

Total cards:-

720000/6001200cards

which number has the greatest absolute value 50,30,-20,-60

Answers

Answer:

-60

Step-by-step explanation:

-60 has the greatest absolute value.

|-60| = 60

Answer:

-60

Step-by-step explanation:
To sum it up shortly and easy absulate value is how much a number is far from zero, -60 is basically 60 numbers away from zero making it the greatest.

Tori is throwing a pool party to kick off the summer. Her pool is empty, so she starts filling it with water from a garden hose. There is a proportional relationship between the time Tori has been filling up the pool (in minutes), x, and the volume of water in the pool (in gallons), y.

Answers

Answer:

y/x

Step-by-step explanation:

Answer: y/x

water/time = unit rate = y/x

Which statement best describes how to determine whether f(x) = x4 – x3 is an even function? determine whether (–x)4 – (–x)3 is equivalent to x4 – x3. determine whether (–x4) – (–x3) is equivalent to x4 x3. determine whether (–x)4 – (–x)3 is equivalent to –(x4 – x3). determine whether (–x4) – (–x3) is equivalent to –(x4 x3).

Answers

Since f(x) ≠ f(- x) then f(x) is not an even function. (–x)^4 – (–x)^3 is equivalent to x^4 – x^3.

What is a function?

A function is defined as a relation between the set of inputs having exactly one output each.

We need to find f(x) = x^4 – x^3 is an even function

If 2 functions are even, then

f(x) = f(- x)

f(x) =  [tex]- x^3[/tex]

f(- x) = [tex]- (- x)^3 = + x^3[/tex]

Since f(x) ≠ f(- x) then f(x) is not an even function.

Learn more about function;

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Answer:

A

Step-by-step explanation:

Pt2 check first one for the question

Answers

Answer:

what how

Step-by-step explanation:

Calculate the following unit rates.

The cookie recipe calls for 2/3 cup of brown
sugar for 1/2 batch of cookies.

Answers

Using proportions, it is found that the unit rate is of 1.33 cups of brown sugar for a batch of cookies.

What is a proportion?

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

2/3 cups of brown sugar are used for half a batch of cookies. The unit rate is the amount used for one batch. Hence, the rule of three is given by:

2/3 cups - 1/2 batch

x cups - 1 batch.

Applying cross multiplication:

[tex]\frac{1}{2}x = \frac{2}{3}[/tex]

[tex]x = \frac{4}{3}[/tex]

The unit rate is of 1.33 cups of brown sugar for a batch of cookies.

More can be learned about proportions at https://brainly.com/question/24372153

A university has 34,350 students. In a random sample of 255 students, 17 speak three or more languages. Predict the number of students at the university who speak three or more languages.

Answers

230.
Because (34350/255)*17 equals 230

At 7 P.M., the temperature was 0.6°C. Over the next 3 hours, the temperature decreased by 1.9º. What was the temperature at 10 P.M.?​

Answers

Answer:

2.5

Step-by-step explanation:

3 hours after 7 is 10 so add 1.9 to 0.6

The temperature would -5.1°c

A regular decagon has a radius of 8 cm. what is the approximate area of the decagon? recall that a decagon is a polygon with 10 sides.

Answers

The approximate area of the decagon with a side of 8cm comes to be 492.40 cm².

The side of the regular decagon = 8cm

What is a regular decagon?

A regular decagon is a polygon with 10 sides that are equal to each other.

The area of a regular decagon with side a is:

[tex]A=\frac{5}{2} a^{2} \sqrt{5+2\sqrt{5} }[/tex]

So, the area A of the regular decagon with a side of 8cm:

[tex]A=\frac{5}{2} 8^{2} \sqrt{5+2\sqrt{5} }[/tex]

[tex]A=160\sqrt{5+2\sqrt{5} }[/tex]

A=492.40 cm²

Therefore, the approximate area of the decagon is 492.40 cm².

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Part B
Based on your research, which of the three stocks would have been the best investment option over the past year? Explain the reason for your
choice.

Answers

Answer:The J C Penney Company stock would have been the best investment option, because the stock provided a rate of return of 18.82 percent to investors during the past year. The Apple stock offered a lower return of 13.29 percent. The Ford Motor Company gave a negative return of 0.51 percent, which means investors in this stock lost a small amount of their investment over the past one year.

Step-by-step explanation: ANSWER FOR EDMENTUM/PLATO

(Answers may vary.)

The J C Penney Company stock would have been the best investment option, because the stock provided a rate of return of 18.82 percent to investors during the past year. The Apple stock offered a lower return of 13.29 percent. The Ford Motor Company gave a negative return of 0.51 percent, which means investors in this stock lost a small amount of their investment over the past one year.

Step-by-step explanation: edmentum/ plato exact

Solve ax + by = a-b and bx – ay = a+b

Answers

Answer: x=1 y=1

Step-by-step explanation:

ax+by=a−b .......... (1)

bx−ay=a+b .......... (2)

Multiply equation (1) with a  and  equation (2) with b ,

a

2

x+aby=a

2

−ab ..........(3)

b

2

x−aby=ab+b

2

 ......... (4)

Adding (3) and (4), we get,

(a

2

+b

2

)x=a

2

+b

2

⇒x=1

Now, from (1),

ax+by=a−b

a+by=a−b

by=−b

y=−1

Which pattern is a characteristic of a graph of exponential growth?.

Answers

Answer:

rises sharply on the right

Step-by-step explanation:

Hello"! Need Help!

Question 1) Given 15 cot A = B. Find sin A and sec A .



Notes:-
• Kindly Don't spam
• Need Genuine Answer
• Don't copy from other website.
• Answer will be step-by-step explanation otherwise answer will be report...​

Answers

⚠ANSWER⚠

Given 15 cot A = 8. Find sin A and sec A

Hope this helps...

What is the fraction of the repeating decimal?

Answers

it's 46/99

whenever you get a question like this, you need to think: what would those fractions even be?

well it sure is not a bc 3/6 is already 0.5 and you need a lower number

it's not b either bc 4/16= 1/4 and that is 0.25

and well it can't be d either bc 13/16 is that not far away from 1

Answer:  C) 46/99

====================================================

Explanation:

Let x = 0.464646...

Multiplying both sides by 100 gets to 100x = 46.464646... which moves the decimal point over two spots to the right.

Then subtract the two equations

100x - x = 46.464646... - 0.464646...

99x = 46

x = 46/99

Notice how the decimal portions cancel out when we subtract. This is because they line up perfectly.

To confirm the answer, your calculator should show that

46/99 = 0.46464646

The "46"s going on forever.

At some point, your calculator may round the last '4' to a 5 to have it read something like 0.464646465 but this is of course rounding error.

On some calculators I tried, I noticed it displayed 0.46464646464647 which is even more strange considering the next digit (4) isn't five or larger. So that 6 shouldn't have bumped up to the 7.


can anyone please teach me how to do this

Answers

Answer:

I will not give in answer but will give an example

Step-by-step explanation:

The area of irregular shapes can be determined by dividing the given shape into smaller regular shapes. The area of irregular shapes can be determined by dividing the given shape into smaller regular shapes.

In real life figures are often irregular shapes - a little bit messy. Think of your messy bedroom once more ‐ is it a perfect rectangle?

The trick is to break these figures into shapes that you know well and whose area you know how to find.

1. Find the area of this room:

3- 2 -4 -6 irregular shape

This can be done in two different ways but ill only give one example on how to find an area.

Method #1

Divide the figure into two rectangles and find all missing lengths.

The larger rectangle has an area of

4cm x 7cm = 28cm2

The smaller rectangle has an area of

4cm x 2cm = 8cm2

If we combine these we will find the total area:

28cm2 x 8cm2 = 36cm2

hope this helps :)

Sam is planning to start a pool cleaning business from his home. he has developed the following cost analysis for the set-up and operation for the first year of his business. he has $9,000 in savings and $23,000 in credit that he can use for the business. approximately what percent of the initial set-up and operation costs will sam need to finance with a lender or investor? item cost truck $9,000 pool cleaning supplies $6,000 payroll $23,000 advertising $1,500 a. 19% b. 23% c. 33% d. 78%

Answers

The percent of the initial set-up and operation costs that Sam needs to finance with a lender or investor is A. 19%.

How to illustrate the percentage?

From the information given, Sam is planning to start a pool cleaning business from his home. he has developed a cost analysis for the set-up and operation.

Here, the percent of the initial set-up and operation costs that Sam need to finance with a lender or investor is simply 19%.

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#SPJ1

To convert 27 kg to mg, you would move the decimal point _____ places to the _____.

Answers

Answer:
To convert 27 kg to mg, you would move the decimal point 6 places to the right.

hope that's helpful to you!

A car driving at 20m/s accelerates at 3m/s2 for 3s. What is its final velocity? How far will it travel during this time?

Answers

Answers:

Final velocity = 29 m/s

Distance traveled = 73.5 meters

========================================================

Work Shown:

The given data is

[tex]v_i = 20 \text{ m}/\text{s} = \text{initial velocity}\\\\a = 3 \text{ m}/\text{s}^2 = \text{acceleration}\\\\t = 3 \text{ s} = \text{time duration}\\\\[/tex]

This leads to

[tex]v_f = v_i + a*t\\\\v_f = 20 + 3*3\\\\v_f = 20 + 9\\\\v_f = 29\\\\[/tex]

The final velocity is 29 m/s.

----------

We can use that final velocity to find the distance traveled.

[tex]x = 0.5*(v_i+v_f)*t\\\\x = 0.5*(20+29)*3\\\\x = 0.5*(49)*3\\\\x = 24.5*3\\\\x = 73.5\\\\[/tex]

The distance traveled is 73.5 meters.

----------

An alternative way to calculate the distance is to do this

[tex]x = \frac{(v_f)^2 - (v_i)^2}{2a}\\\\x = \frac{(29)^2 - (20)^2}{2*3}\\\\x = \frac{841 - 400}{6}\\\\x = \frac{441}{6}\\\\x = 73.5\\\\[/tex]

Or you could do this

[tex]x = v_i*t + 0.5*a*t^2\\\\x = 20*3 + 0.5*3*3^2\\\\x = 20*3 + 0.5*3*9\\\\x = 60 + 13.5\\\\x = 73.5\\\\[/tex]

For more information, check out the Kinematics equations.

The volume of a number cube is 27 cm^3. What is the length of each side of a cube?

Answers

Answer:

Side = 3 cm

Step-by-step explanation:

Given:

[tex]\text{Volume of cube} = 27 \ \text{cm}^{3}[/tex]

The formula to calculate the volume is (Side)³.

Thus, we obtained the following equation:

[tex](\text{Side})^{3} = 27 \text{cm}^{3} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ [\text{Side}^{3} = \text{Volume of cube}][/tex]

Cube root both sides to obtain the side length of the cube:

[tex]\implies \sqrt[3]{\text{(Side)}^{3}} = \sqrt[3]{27 \ \text{cm}^{3} }[/tex]

Evaluate the side of the cube:

[tex]\implies \sqrt[3]{\text{(Side)}^{3}} = \sqrt[3]{27 \ \text{cm}^{3} }[/tex]

[tex]\implies \sqrt[3]{\text{(Side)}\text{(Side)(Side})} = \sqrt[3]{3 \times 3 \times 3 \times \text{(cm)(cm)(cm)}}[/tex]

[tex]\implies \text{Side = 3 cm}[/tex]

Answer:

3 cm

Step-by-step explanation:

Formula

Volume of a cube = [tex]a^3[/tex]  (where a is the side length)

Given that the volume of the cube is 27 cm³, to find the side length, substitute the given volume into the equation and solve for [tex]a[/tex]:

[tex]\implies 27\: \sf cm^3=a^3[/tex]

Cube root both sides:

[tex]\implies \sqrt[3]{27\: \sf cm^3} =\sqrt[3]{a^3}[/tex]

[tex]\implies \sqrt[3]{27}\sqrt[3]{\sf cm^3} =\sqrt[3]{a^3}[/tex]

[tex]\implies 3\: \sf cm=a[/tex]

[tex]\implies a=3\: \sf cm[/tex]

Therefore, the length of each side of the cube is 3 cm.

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