The sum of three terms in AP is 15. If the first two terms are each decreased by 1 and the last is increased by 1 then the resulting terms are in GP. find the numbers.​

Answers

Answer 1

Answer:

3, 5, ,7 or 9, 5, 1

Step-by-step explanation:

Let the three terms in AP be a - d, a & a + d

where a = First term and d = Common difference.

Condition 1: sum of three terms in AP is 15.

a - d + a + a + d = 15

3a = 15

a = 15/3

a = 5

Condition 2: When first two terms are each decreased by 1 and the last is increased by 1 then new terms so obtained will be as follows:

a - d - 1, a - 1, a + d + 1

These terms are in G.P.

\( {(a - 1)}^{2} = (a - d - 1)(a + d + 1) \\ \\ {(5 - 1)}^{2} = (5 - d - 1)(5 + d + 1) \\ \\ {(4)}^{2} = (4 - d)(6 + d) \\ \\ 16 = 24 + 4d - 6d - {d}^{2} \\ \\ 0 = 8 - 2d - {d}^{2} \\ \\ {d}^{2} + 2d - 8 = 0 \\ \\ {d}^{2} + 4d - 2d - 8 = 0 \\ \\ d(d + 4) - 2(d + 4) = 0 \\ \\ (d + 4)(d - 2) = 0 \\ \\ d + 4 = 0 \: \: or \: \: d - 2 = 0 \\ \\ d = - 4 \: \: or \: \: d = 2 \\ \\ when \: d = - 4 \\ \\ a - d = 5 - ( - 4) = 9 \\ a = 5 \\ a + d = 5 - 4 = 1 \\ \\ when \: d = 2 \\ a - d = 5 - 2 = 3 \\ a = 5 \\ a + d = 5 + 2 = 7 \\ \\ thus \: three \: terms \: in \: AP \: are: \\9, \: 5, \: 1 \: \: or \: \: 3, \: 5, \: 7\)


Related Questions

A shuffled deck of cards is placed facedown on the table. It contains 7
hearts, 8 diamonds, 6 clubs and 3 spades. What is the probability that the top two cards are one of the clubs followed by one of the heartS?

Answers

Answer:

3/23 x 5/23 = 15/529 = 2.84%

Answer:

First find the total of 7 hearts, 8 diamonds, 6 clubs and 6 spades which is 24 altogether. Therefore we are talking about 4 types of cards. I therefore think the probability will be 2/24

If an arithmetic sequence has terms a5 = 20 and a9 = 44, what is a15?
A.90
B.80
C.74
D.35

Answers

Based on the information given, it can be deduced that the value of the 15th term is B. 80.

In an arithmetic sequence., uₙ = a + (n-1)d

Given in the question,

\(a_{5}\) = 20 , \(a_{9}\) = 44  

Using above formula

for \(a_{5}\) => a + 4d = 20 ..... (i)

for \(a_{9}\) => a + 8d = 44 ...... (ii)

Subtract (ii)  from (i)

\(a + 8d = 44 \\- a - 4d = -20\\ -------\\ 0 + 4d = 24\)

=> 4d = 24

=> d = 24/4

=> d = 6

Therefore, a will be:

a + 4d = 20 .......(i)

a + 4(6) = 20

a + 24 = 20

a = 20 - 24

a = -4

Therefore, the 15th term will be:

\(a_{15}\) = a + (15 - 1)d

\(a_{15}\) = a + 14d

\(a_{15}\) = -4 + 14 x 6

\(a_{15}\) = -4 + 14 x 6

\(a_{15}\) = 14 x 6 - 4

\(a_{15}\) = 80

The 15th term is 80.

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Please help! What is the surface area of the cylinder with height 4 m and radius 8 m? Round your answer to the nearest thousandth.

Make sure to round please.

Answers

The surface area of the cylinder is 948m²

What is surface area of cylinder?

The area occupied by a three-dimensional object by its outer surface is called the surface area. The surface of a cylinder is expressed as ;

SA = 2πr(r+h)

Where r is the radius of the base and h is the height of the cylinder.

r =8m

h = 4m

SA = 2 × 3.14 × 8 (8+4)

SA = 78.96 × 12

SA = 947.52 m²

to the nearest whole number

SA = 948 m²

therefore the surface area of the cylinder is 948 m²

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ON A RECENT MATH TEST MARY SCORED 14 OF 16 CORRECT. JOHN SCORED 23 OF 26AND JOE SCORED 9 OF 11 CORRECT. WHO ACHIEVED THE HIGHER SCORE?

Answers

Answer:

I think the answer is mary

Answer:

John

Step-by-step explanation:

Mary: 87%-88% (0.875)

John: 88% (0.884)

Joe: 81% (0.818)

Need help for Geo very Urgent please

Need help for Geo very Urgent please

Answers

Direct answers :In triangle 1 :

\(\color{plum}\tt \: \bold{\tt m∠1 = 77.7°}\)

In triangle 2 :

\(\color{plum}\bold{\tt \: m∠B =63 °}\)

\(\color{plum}\bold{\tt \: m∠C =63° }\)

In triangle 3 :

\(\color{plum}\bold{\tt \: m∠1 = 40° }\)

\(\color{plum}\bold{\tt \: m∠2 = 28°}\)

Steps to derive the correct measurement of each of the angles :

In triangle 1 :

Given :

m∠2 = 52.2°m∠3 = 50.1°

Sum of all angles in a triangle = 180°

Which means :

\( =\tt 180 - (52.2 + 50.1)\)

\( =\tt 180 - 102.3\)

\( = \tt77.7°\)

Thus, the measure of angle 1 = 77.7°

Since the sum of all angles (77.7+52.2+50.1=180°) equals 180° we can conclude that we have found out the correct value of angle 1.

Therefore, the m∠1 = 77.7°

In triangle 2 :

Given :

m∠A = 54°m∠B = m∠C

Let the measure of angle B be x.

Then, the measure of angle C will also be x.

Which means the sum of angle B and C will be equal to 2x.

That means :

\( =\tt 54 + 2x = 180\)

\( = \tt180 - 54 = 2x\)

\( =\tt 2x = 126\)

\( =\tt x = \frac{126}{2} \)

\( =\tt x = 63\)

Thus, the measure of Angle B = 63°

Measure of angle C = 63°

In triangle 3 :

Given :

m∠3 = 112°Measure of exterior angle = 140°

Which means :

= m∠2 + 112° = 140° (exterior angle property)

\( = \tt140 - 112 = ∠2\)

\( = \tt \: m∠2 = 28°\)

Thus, the measure of angle 2 = 28°

= m∠1 + m∠2 + m∠3 = 180°

\( =\tt m∠1 + 112 + 28 = 180\)

\( =\tt m∠1 + 140 = 180\)

\( = \tt \: m∠1 = 180 - 140\)

\( = \tt \: m∠1 = 40°\)

Thus, the measure of angle 1 = 40°

The ratio of boys to girls in the school musical is 5 to 8. Which of the following shows the possible numbers of boys to girls in the school musical?

Answers

Answer:

10 and 16

15 and 24

20 and 32

Step-by-step explanation:

Brainliest please?

A number divided by 4 plus 3 is 8

Answers

Answer:

\(number = x \\ \frac{x}{4} + 3 = 8 \\ \frac{x}{4} = 5 \\ x = 20 \\ thank \: you\)

Answer:

\(let \: the \: number \: be \: x \: \\ then \: \\ \frac{x}{4} + 3 = 8 \\ \frac{x}{4} = 8 - 3 \\ \frac{x}{4} = 5 \\ x = 5 \times 4 \\ x = 20 \\ \: hence \: 20 \: is \: your \: answer \:hope \: it \: helped\)

You won 2000 dollars! Since you are generous, you decide to give a cash gift to your 6 siblings. Each sibling received the same amount and there is still 950 leftover.

1. Write an equation to represent the situation.

2. How much money did each sibling recive?

Answers

Answer:

1. 2000-950 = 1050

1050 / 6 = 175

2. 175 dollars

Lucky siblings I would have given no money to any siblings

if a=1 b =2and c= -3 find the value of a2b2c-2​

Answers

Hello !

you made a typo with the c^-2 because otherwise it does not make a round result

\(a^{2} *b^{2} *c^{2} \\\\= 1^{2} *2^{2}* (-3)^{2} \\\\= 1*4*9\\\\\boxed{= 36}\)

Jenna parks her car at a parking lot for a flat fee of $5.00 plus $0.75 per hour that her car is parked.

(a) Write an equation to represent Elaine's total parking cost, C, in dollars, for t hours.

(b) How much will it cost Elaine to park her car for a full 24 h?

PLEASE HELP!!!

Answers

a. C = 5.00 + 0.75t

b. It will cost Elaine $23.00 to park her car for a full 24 hours at the parking lot.

(a) To represent Elaine's total parking cost, C, in dollars for t hours, we can use the following equation:

C = 5.00 + 0.75t

In this equation, the constant term 5.00 represents the flat fee for parking, and the term 0.75t represents the additional cost per hour based on the number of hours (t) the car is parked. By adding the flat fee to the hourly cost, we get the total parking cost for t hours.

(b) To find out how much it will cost Elaine to park her car for a full 24 hours, we can substitute t = 24 into the equation:

C = 5.00 + 0.75 * 24

Calculating this expression, we get:

C = 5.00 + 18.00

C = 23.00

Therefore, it will cost Elaine $23.00 to park her car for a full 24 hours at the parking lot.

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Circle YES or NO The terms -5x and 5x are like terms. PLEASE I NEED IT REALLY QUICK

Circle YES or NO The terms -5x and 5x are like terms. PLEASE I NEED IT REALLY QUICK

Answers

Answer:

YES

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

Because -5x and 5x both have the same things in it (a full base number and variable), they are like terms. It doesn't matter that one is a negative and the other is not. It's just matters that everything else is the same.

I hope this helps!

Assume that women's heights are normally distributed with a mean given by μ = 63.6 in, and a standard deviation given by a = 2.5 in. Complete parts a and b.
a. If 1 woman is randomly selected, find the probability that her height is between 62.9 in and 63.9 in.
The probability is approximately
(Round to four decimal places as needed.)

Answers

The probability that the woman's height is between 62.9 in and 63.9 in is 0.1580

Calculating the probability of values from the the z-scores

From the question, we have the following parameters that can be used in our computation:

Mean = 63.6Standard deviation = 2.5Age = between 62.9 and 63.9

So, the z-scores are

z = (62.9 - 63.6)/2.5 = -0.28

z = (63.9 - 63.6)/2.5 = 0.12

i.e. between a z-score of -0.28 and a z-score of 0.12

This is represented as

Probability = (-0.28 < z < 0.12)

Using a graphing calculator, we have

Probability =  0.1580

Hence, the probability is 0.1580

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I WILL MARK BRAINLISET WHATEVER ITS CALLED HURRY PLEASE ITS DUE TODAY
sorry about the points i forgot to change it

Problem 1

Freddy says that 3/6 - 1/3 = 2/3 because all you have to do is subtract the numerators and subtract the denominators. Is Freddy correct or incorrect? You may draw a fraction model to support your thinking.Is Freddy correct or incorrect?

Enter either 'correct' or 'incorrect'


2.Change each improper fraction to a mixed number. Write the answer in simplest form. 56 / 12

Answers

Answers:

1): Freddy is incorrect. The correct answer is 1/6.

Step-by-step explanation: Freddy is incorrect. You are not supposed to subract the denominators. When you are solving the equation you have to find a common denominator. You can only subtract the numerator, and the denominator is the same.

Find the LCM. The LCM in this case is 6.

3/6 - 2/6

Remember, only subtract the numerators. The denominator will still be 6.

1/6

1/6 is therefore the correct answer.

2) 4 8/12

A baseball player had batting average of 0.298 what the probability of him getting exactly 4 out of 10 times he was up at bat

Answers

The probability of the baseball player getting exactly 4 hits out of 10 times at bat is approximately 0.161, or 16.1%.

To calculate the probability of a baseball player getting exactly 4 hits out of 10 times he was up at bat, we need to use the binomial probability formula.

The binomial probability formula is given by:P(X = k) = C(n, k) * p^k * (1 - p)^(n - k)

Where:

P(X = k) is the probability of getting exactly k hits

n is the total number of trials (in this case, the player's 10 times at bat)

k is the number of successful trials (in this case, 4 hits)

p is the probability of success in a single trial (in this case, the player's batting average, 0.298)

(1 - p) is the probability of failure in a single trial

Plugging in the values:

P(X = 4) = C(10, 4) * (0.298)^4 * (1 - 0.298)^(10 - 4)

Using the combination formula C(n, k) = n! / (k! * (n - k)!):

P(X = 4) = 10! / (4! * (10 - 4)!) * (0.298)^4 * (1 - 0.298)^(10 - 4)

Calculating the values:

P(X = 4) ≈ 0.161

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a screw labeled 1/4-20 x 5/8 has a length of

Answers

Answer:

Step-by-step explanation:

a screw labeled 1/4-20 x 5/8 has a length of

help please need asap

help please need asap

Answers

Answer:

4.5

Step-by-step explanation:

4 * 1.5 = 6

3* 1.5 = 4.5

1.5=4.5
1.5=6
I think

Solve for x.
(x - 2)² = 2

Answers

The value of x is 4 and 0

What is basic algebra ?

Algebra is a branch of mathematics that helps translate real-world problems or situations into mathematical formulas. Mathematical operations like addition, subtraction, multiplication, and division as well as variables like x, y, and z are needed to construct a valid mathematical expression. Coordinate geometry, calculus, and trigonometry are just a few of the mathematics topics that involve algebra. A simple algebraic equation is 2x + 4 = 8. Algebraic expressions are the result of performing operations on variables and constants, such as addition, subtraction, multiplication, division, etc. Consider that James and Natalie came up with the notion to arrange matchsticks into numerical patterns when they were fiddling with them.

Given that : \((x-2)^{2} = 2\)

\((x-2)^{2} = 2\)

(x-2)=±2

x= 4

x=0

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find the missing side. round to the nearest tenth

find the missing side. round to the nearest tenth

Answers

The required angle is 24.5°.

Given is a right triangle with perpendicular side 16 and the base = 35 we need to find an acute angle in it,

To find the acute angle in a right triangle given the lengths of the perpendicular side and the base, you can use the tangent function.

The tangent of an angle is defined as the ratio of the length of the perpendicular side to the length of the base side.

In this case, the perpendicular side is 16 and the base is 35.

Let's denote the acute angle as θ.

Using the tangent function, we can set up the equation:

tan(θ) = perpendicular side / base

tan(θ) = 16 / 35

To find the value of θ, we can take the inverse tangent of both sides:

θ = tan⁻¹(16 / 35)

θ = 24.5°

Hence the required angle is 24.5°.

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Select the statement that describes this expression: 8 + one half x (6 – 2) – 1.

Select the statement that describes this expression: 8 + one half x (6 2) 1.

Answers

Answer:

B).

Step-by-step explanation:

Add 8 to half the difference of 6 and 2 then subtract 1.

Answer:

I apologize but I haven't worked for an answer. but my mind is, what is the point of this question? everyone is familiar with the "when am I ever going to use this in life and why do I need to learn this?" but this is a whole new level of w t f.

I
Tori had a $300 unpaid balance after last month's payment on her account. Her annual percentage rate is 21%. The minimum payment due is $25. How much of that is interest for one
month on the unpaid balance?

Answers

Answer:

After the passage of a month, the interest that Tori must pay will be $ 4.81.

Step-by-step explanation:

Given that Tori has an unpaid balance of $ 300 on her credit card, and that said credit card has an annual interest of 21% on the unpaid balances, considering that the minimum payment is $ 25, to determine how much she should pay after a month of After your debt, it is necessary to perform the following calculation:

12 = 21

1 = X

21/12 = X

1.75 = X

((300 - 25) x 1.75 / 100) + 300 = X

4.81 + 300 = X

304.81 = X

Thus, after the passage of a month, the finance charge that Tori must pay will be $ 4.81.

Giving brainliest to who can help!

Giving brainliest to who can help!

Answers

Answer:

BELOW

Step-by-step explanation:

OK so AC is 18, since both of those sections are 9, and 9+9=18.

But for AG im kind of stuck. At first I thought it was 11 but then just by looking at it you can see that they aren't the same length(I mean AG and GC) so I don't know about that one.

heres what I THINK it could be

GF and GD COULD BE the same length, considering that this is a 3d shape.

So, since AGF is a right triangle, we can use pythagorem. theorem.

7^2+9^2=x^2

49+81=x^2

130=x^2

x==11.40

MAYBE AG=11.40.

i tried my best sorry

at the audtions, 40 studens tried out for the school show choir, but only 12 will be chosen. How many different ways can the show choir be formed

Answers

Answer:D

Step-by-step explanation:

It’s a permutation

at the audtions, 40 studens tried out for the school show choir, but only 12 will be chosen. How many

HELP PLEASE whats the number for this answer?


ASAP

HELP PLEASE whats the number for this answer?ASAP

Answers

Answer:

68°

Step-by-step explanation:

Total angle in a quadrant = 90°

x + 22° = 90°

x = 90 - 22

x = 68°

kengrew 4/5 of an inch last year sang grew three eighths of an inch who grew more and by how much ​

Answers

Answer:

Ken;

Step-by-step explanation:

Ken grew 4/5 of an inch. 4/5=0.8

Sang grew 3/8 of an inch. 3/8= 0.375

0.8 > 0.375 so Ken grew more.

0.8 - 0.375 = 0.425

So, Ken grew 0.425 more inches than Sang grew. 0.425 is also the same thing as 17/40.

The average cost of 2 storybooks was 2.45. One of the books cost 2.80. Find the cost of the other book

Answers

Answer:

The answer is simply 26,25/3 which gives that each book costed 8,75 dollars assuming of course that all books have the same price.

Plz help me well mark brainliest!
Only if correct

Plz help me well mark brainliest!Only if correct

Answers

Answer: A is the answer

Step-by-step explanation:

Answer:

i think it is a

Step-by-step explanation:

Which relation is a function?

Which relation is a function?

Answers

The only graph that represents a function is: Graph D

How to identify a function?

A function is defined as a relationship or expression that involves one or more variables. It typically has a set of input and outputs.  Each input has only one output. The function is the description of how the inputs relate to the output.

A function is a relation which describes that there should be only one output for each input (or) we can say that a special kind of relation (a set of ordered pairs), which follows a rule i.e., every X-value should be associated with only one y-value is called a function.

From the graphs, we can see that:

Graph A has 2 outputs at x = -2

Graph B has 2 outputs at x = 0

Graph C has two outputs at x = -1

Graph D has a unique output for every input and as such it is a function

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80% of salmon pass through a single dam unharmed. By what percent does the number of salmon decrease when passing through a single dam?

Answers

Answer:20%

Step-by-step explanation:

Answer: 20%

Step-by-step explanation:

-1000 2/3 is not real fraction. True or false

Answers

True, While "-1000 2/3" is not a real fraction, it can be represented as the improper fraction -2998/3.

The statement "-1000 2/3 is not a real fraction" is true. A real fraction is a mathematical expression that represents a ratio of two real numbers. In a fraction, the numerator and denominator are both real numbers, and they can be positive, negative, or zero.

In the given statement, "-1000 2/3" is not a valid representation of a fraction. The presence of a space between "-1000" and "2/3" suggests that they are separate entities rather than being part of a single fraction.

To represent a mixed number (a whole number combined with a fraction), a space or a plus sign is typically used between the whole number and the fraction. For example, a valid representation of a mixed number would be "-1000 2/3" or "-1000 + 2/3". However, without the proper formatting, "-1000 2/3" is not considered a real fraction.

It's important to note that "-1000 2/3" can still be expressed as an improper fraction. To convert it into an improper fraction, we multiply the whole number (-1000) by the denominator of the fraction (3) and add the numerator (2). The result would be (-1000 * 3 + 2) / 3 = (-3000 + 2) / 3 = -2998/3.

In conclusion, while "-1000 2/3" is not a real fraction, it can be represented as the improper fraction -2998/3.

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Help me with this I will give you all my points???​

Help me with this I will give you all my points???

Answers

Answer:

1. Yes 2. No 3. Yes 4. No

Step-by-step explanation: 1 is a function because none of the x values repeat, 2 isn't a function because in the x coordinates, -2 repeats, 3 is a function because if you were to draw a (vertical) line through each point, none of them have two points on one line, 4 is a function because none of the x coordinates point to more than one y coordinate

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