The sun of the first 3 terms of an arithmetic sequence is 21 while their product is 315 determine these three terms?

Answers

Answer 1

Answer:

The terms of the sequence are x=5 and a=2:

[tex] x + (x + a) + (x + 2a) = 21 [/tex]  →  [tex] 5 + (5 + 2) + (5 +2*2) = 21 [/tex]

[tex] x*(x + a)*(x + 2a) = 315 [/tex]  →  [tex] 5*(5 + 2)*(5 + 2*2) = 315 [/tex]

Step-by-step explanation:

We can find the terms of the following sequence:

[tex] x + (x + a) + (x + 2a) = 21 [/tex]

[tex] 3x + 3a = 21 [/tex]      

[tex] x + a = 7 [/tex]      (1)

The product of that sequence is:

[tex] x*(x + a)*(x + 2a) = 315 [/tex]    (2)

Solving equation (1) for x:

[tex] x = 7 - a [/tex]  (3)

And by entering (3) into (2):

[tex] (7 - a)*(7 - a + a)*(7 - a + 2a) = 315 [/tex]  

[tex] 7*(7^{2} - a^{2}) = 315 [/tex]  

[tex] 343 - 7a^{2} = 315 [/tex]    

[tex] a = 2 [/tex]  

Now, by entering "a" into equation (3):

[tex] x = 7 - 2 = 5 [/tex]  

Therefore, the terms of the sequence are x=5 and a=2.

I hope it helps you!


Related Questions

An oblique candle with a volume of 270 cubic centimeters is 18 centimeters tall. The width of the triangular candle base is 5 centimeters, and the width of the slanted candle is 7 centimeters. An oblique triangular prism has a volume of 270 cubic centimeters. The vertical height is 18 centimeters. The width of the triangular bases is 6 centimeters, and the width of the slanted prism is 7 centimeters. What dimensions of the box are required to fit the candle? 5 cm by 6 cm by 18 cm 7 cm by 6 cm by 18 cm 5 cm by 3 cm by 18 cm 7 cm by 3 cm by 18 cm

Answers

Answer:

7 cm by 6 cm by 18 cm

Step-by-step explanation:

Given :

Volume of candle = 270cm³

Height = 18cm

Triangular base = 5cm

Width of candle = 7cm

Volume = Area of base * height

270cm³ = Area of base * 18

Area of base = 270cm³ / 18cm

Area of base = 15 cm²

Using this to find the height of triangular prism :

Area = 1/2 * base * height

15cm² = 1/2 * 5 * height

15cm² = 2.5 *. Height

Height = 6 cm

Hence, the dimension of triangular prism is : 7cm by 6cm by 18cm

Answer:

7 cm by 6 cm by 18 cm

Step-by-step explanation:

its D

James troubled 40 miles per hour and traveled a total distance of 260 miles use the formula D equals RT to determine the total amount of time it took James to reach his destination ​

Answers

Answer:

6.5 hours

Step-by-step explanation:

James troubled 40 miles per hour and traveled a total distance of 260 miles

The formula to calculate the Total Amount of time it would take to reach the destination bis given as:

Time = Distance/Speed

Distance = 260 miles

Speed = 40 miles per hour

Hence,

Time = 260 miles/40 miles per hour

Time = 6.5 hours

Therefore, the total amount of time it took James to reach his destination is 6.5 hours

Help me solve this

6(5x -3) =6(5x−3)=

Answers

Answer:

infinitely many solutions

Step-by-step explanation:

The two sides of this equation are identical.  Thus, this is an 'identity.'  The equation will be true no matter what value is substituted for x.  Thus, there are infinitely many solutions.

Need help pleaseee someone

Answers

Answer:

Step-by-step explanation:

Help ASAP Please! This is timed, and I only have 45 minutes left to answer the rest of these questions. I will award 100 points and brainly to whoever can give me the equation. Help Please Time is on the essence, and If i fail this I risk failing the class

Answers

Answer:

y = 6/7x - 37/7

Step-by-step explanation:

m = 6/7

(5, -1)

y - y1 = m(x - x1)

y + 1 = 6/7(x - 5)

y + 1 = 6/7x - 30/7

y = 6/7x - 37/7

Answer:

Step-by-step explanation:

Start by the point-slope form and given slope = 6/7 and point (5, -1)

(y-(-1)) / (x-5) = 6/7

7(y+1) = 6(x-5)

7y = 6x - 37

y = 6x/7 - 5 2/7

which is the answer in slope-intercept form

800 divided by 12. help me pls

Answers

Answer:

Helloooo

ur answer is

66.6666666667

Step-by-step explanation:

thanks.....hope it helps

Please help me with those questions

Answers

I’ve attached my work...
Hope it helps!
If you have any questions, comment!
Have a nice day or night:)

Given that OA = 2x + 9y, OB = 4x + 8y and CD = 4x - 2y, explain the geometrical relationships between the straight lines AB and CD.

Answers

Answer:

The geometrical relationships between the straight lines AB and CD is that they have the same slope

Step-by-step explanation:

Given

[tex]OA = 2x + 9y[/tex]

[tex]OB = 4x + 8y[/tex]

[tex]CD = 4x - 2y[/tex]

Required

The relationship between AB, CD

Since AB is a straight line and O is the origin, then:

[tex]AB = (c - a)x + (d - b)y[/tex]

Where:

[tex]OA = ax + by[/tex] ====> [tex]OA = 2x + 9y[/tex]

[tex]OB = cx + dy[/tex] ====> [tex]OB = 4x + 8y[/tex]

This implies that:

[tex]a =2[/tex]      [tex]b = 9[/tex]     [tex]c = 4[/tex]   [tex]d = 8[/tex]  

So:

[tex]AB = (c - a)x + (d - b)y[/tex]

[tex]AB = (4 - 2)x + (8 - 9)y[/tex]

[tex]AB = 2x -y[/tex]

So, we have:

[tex]AB = 2x -y[/tex]

[tex]CD = 4x - 2y[/tex]

Calculate the slope (m) of [tex]AB\ and\ CD[/tex]

[tex]m = \frac{Coefficient\ of\ y}{Coefficient\ of\ y}[/tex]

For AB

[tex]m_1 = \frac{-1}{2}[/tex]

[tex]m_1 = -\frac{1}{2}[/tex]

For CD

[tex]m_2 = \frac{-2}{4}[/tex]

[tex]m_2 = \frac{-1}{2}[/tex]

[tex]m_2 = -\frac{1}{2}[/tex]

By comparison:

[tex]m_1 = m_2 = -\frac{1}{2}[/tex]

This implies that both lines have the same slope

Escribe and correct the error in finding the simple interest earned on $500 at 6% for 18 months. I=500(0.06)(18) I = 540

Answers

Answer: 45$

Step-by-step explanation:

Given

Principal [tex]P=\$500[/tex]

Rate [tex]R=6\%[/tex]

time [tex]t=18\ \text{months or}\ 1.5\ \text{years}[/tex]

Simple interest is given by

[tex]\Rightarrow S.I.=\dfrac{P\times R\times T}{100}[/tex]

In the question, time is taken in months which is incorrect

Putting values

[tex]\Rightarrow S.I.=\dfrac{500\times 6\times 1.5}{100}=45\$[/tex]

What is the domain of y = log5^x
all real numbers less than 0
all real numbers greater than 0
all real numbers not equal to 0
all real numbers

Answers

Answer:

The answer is all real numbers

Answer:b

Step-by-step explanation:

A 5-pound bag of cat food costs $11.25. What is the unit price of the cat food?


a

$0.44 per pound
b

$2.25 per pound
c

$6.25 per pound
d

$56.25 per pound



n no postin link step by step

Answers

Answer:

C $2.25

Step-by-step explanation:

$11.25÷5=$2.25

$2.25 because 5 pounds of cat food is 11.25 and you want to find how much is one pound so u divide 11.25 by 5

what is the coefficient in -x+9

Answers

Answer:

-1

Step-by-step explanation:

The coefficient is the number directly next to a given variable (typically 1 if there is no given number).

In this case, note the variable: -x

As stated above, the number is 1 if there is no number given. However, note that there is a negative sign, therefore, your coefficient is -1

-1 is your answer.

~

A company packages their product in two sizes of cylinders. Each dimension of the larger finder
is twice the size of the corresponding dimension of the smaller Cylinder
20
2h
Based on this information, which of the following statements is true?
A. The volume of the larger cylinder is 2 times the volume of the smaller cylinder.
B. The volume of the larger cylinder is 4 times the volume of the smaller cylinder.
C. The volume of the larger cylinder is 8 times the volume of the smaller cylinder.
D. The volume of the larger cylinder is 6 times the volume of the smaller cylinder.

Answers

The true statement is The volume of the larger cylinder is 8 times the volume of the smaller cylinder.

The correct option is (C)

What is Volume of cylinder?

The volume of cylinder is, V=  πr²h.

Volume of large cylinder,

= πr²h

= πd²(2h)

= 2hπd²

Volume of large cylinder,

= πr²h

= π(d/2)²(h)

= πd²h/4

= 2πd²h/8

Hence, The volume of the larger cylinder is 8 times the volume of the smaller cylinder.

Learn more about volume of cylinder here:

https://brainly.com/question/16788902

#SPJ1

Please help me on this question!!!

Answers

Answer:

I cannot help you because I didnot know the answer

Factor completely. 492 – 9 =?​

Answers

Answer:

483

Step-by-step explanation:

Answer:

483

Step-by-step explanation:

subtract 492 by 9 and it is =483

what os the best description pf addititon property of equality

Answers

Answer:

The use of the addition property of equality is sound, and the answer is correct

Step-by-step explanation:

Addition Property of Equality

If two expressions are equal to each other, and you add the same value to both sides of the equation, the equation will remain equal.

Hope this helps; have a great day!

Todd works a different amount of hours each week. If he earns $46.56 for 8 hours of work,
how much will he earn for 23 hours of work?
Answer: $

Answers

Answer:

should be $133.86

Step-by-step explanation:

46.56 divided by 8 to get money per hour, then multiplied by 23 to get money earned after 23 hours

The blinker on Brendan’s Bugatti blinks 22 times every 48 seconds. how many times will the blinker blind in 24 seconds ?

Answers

Answer:

11 times.

Step-by-step explanation:

Can you please give me a brainlist

Aidan rollerblades 540 ft per min. at this rate how far in yards will he rollerblade in 5 min( 1 yd =3 ft)​

Answers

Answer:

900 yards

Step-by-step explanation:

540/3=180

180x5=900

123 divided by 5? Please help I need the answer now!!!

Answers

Answer:

24.6

Step-by-step explanation:

Answer:24.6

Step-by-step explanation:

Which equation represents a line that is parallel to the line represented by

4x + y = 7 and passes through the point (1, 8)?

Answers

Answer:

y = -4x + 12

Step-by-step explanation:

For a line to be parallel, it needs to have the same slope.

Point intercept form: y - y₁ = m (x - x₁)

Where y and x are just kept as y and x, y₁ and x₁ are the parts of a coordinate, and m = slope.

So, in order for the line to be parallel, it needs to have the same slope as the first equation. The slope of the line (which is the "m" in y = mx + b) is..

4x + y = 7

y = -4x + 7

So, m, or the slope, is -4.

Plug this, along with the coordinate the problem gives you into point-intercept form.

y - y₁ = m (x - x₁)

y - 8 = -4 (x - 1)

Simplify.

y - 8 = -4x + 4

Add 8 to both sides.

y = -4x + 12

HELP PLEASE.

In.AA80 m24 = 10° and m28- 145°. Select the triangle that is similar to AABC. O A. AMNP, in which m_M= 145º and MzN= 15 O B. AXYZ, in which m2X= 10º and m2 7 = 25° O = C. AJKL, in which meJ= 10° and mL = 135 o D. APQR, in which m_P= 25° and MR = 135°​

Answers

Answer:

B. ∆XYZ, in which m∠X = 10° and m∠Z = 25°

Step-by-step explanation:

∆ABC

m∠A = 10°

m∠B = 145°

m∠C = 180° - (m∠A + m∠B )

= 180° - (10° + 145°)

= 180° - 155°

m∠C = 25°

∆XYZ

m∠X = 10°

m∠Z = 25°

m∠Y = 180° - (m∠X + m∠Z)

= 180° - (10° + 25°)

= 180° - 35°

m∠Y = 145°

so,

m∠A = m∠X = 10°

m∠C = m∠Z = 25°

m∠B = m∠Y = 145°

I'm just ordinary human, CMIIW

A can of orange juice is 12 ounces. How many grams is the can of
orange juice?

Answers

Answer:

HI! The answer should be around 340.194 grams

Step-by-step explanation:

Calculated it

Answer:

340.194 grams inside the can of orange juice.

Step-by-step explanation:

The length of the base of an isosceles triangle is x. The length of a leg is 2x - 3. The perimeter of the triangle is 34. Find x.

Answers

Answer:

x=8

Step-by-step explanation:

If the triangle is isosceles, it means that 2 of its sides are equal in length, therefore its perimeter is equal to

[tex](2x - 3) + (2x - 3) + (x)[/tex]

Adding similar terms, and recalling that the perimeter is equal to 34, we get

[tex]5x - 6 = 34 \\ 5x = 40 \\ x = 8[/tex]

James studied for his test. He started studying at 3:20 p.m. and studied for 2 hours
and 15 minutes. What time did he finish studying? (SHOW WORK PLS BEST ANSWER WITH BEST EXPLANATION GETS THANKS AND BRAINLIEST!!)

Answers

Answer:

James finished studying at 5:35pm

Step-by-step explanation:

3:20+2:15=3:35

20+15=35

3+2=5

help !! I can't figure this question out.

Answers

Answer:

C And D!

Step-by-step explanation:

Answer: I think it’s A (x + 4 = 14) I’m not sure though

preform the operation (8x 2 +8x)−(−9x 2 +8x)

Answers

Answer:

17x^2

Step-by-step explanation:

8x^2-(-9x^2)= 17x^2

+8x-8x

What two numbers have a sum of 215 and a difference of 137

Answers

Answer:

see below

Step-by-step explanation:

let x = big number

let you = small number

x + y = 215-------> (1)

x - y = 137 ------>(2)

(1)

x = 215 - y ----->(1)

substitute 1 into 2

215 - y -y = 137

-2 y = 78

y = 39

substitute y = 39 into (1)

x = 215 - (39)

x = 176

thus the numbers are 176 & 39

hope this helps

please mark it brainliest

it took me quite long to do this

There are 36 quarters in my coin collection. If my coin collection has 45% quarters, how many total coins do I have?

Answers

9514 1404 393

Answer:

  80

Step-by-step explanation:

If N is the total number of coins, then the number of quarters is ...

  36 = 0.45×N

 36/0.45 = N = 80

You have 80 coins you your collection.

how to solve -6x+5y=16 and x=5-3y using subsituation

Answers

Answer:

you already have x solved for so you plug 5-3y into the x in -6x and you get -6(5-3y)+5y=16

-30+18y+5y=16

-30+23y=16

23y=46

y=2

x=5-3(2)

x=5-6

x=-1

Step-by-step explanation:

Other Questions
Carlos left the mall at the same time asGabriella. They traveled in oppositedirections. Gabriella traveled at a speedof 50 mph. After two hours they were 180mi. apart. How fast did Carlos travel? find the area of the figure use 3.14 for pie a bag contains 5 blue, 8 red, and 7 green marbles. a marble is selected at random. Write each answer as a fraction, percent, and a decimal. A cone-shaped water tank is completely filled. The tank has a depth of 12 feet and a radius of 29 feet. A pump removes water from the tank at a rate of 1000 cubic feet per hour. What is the volume of water in the tank before the water is pumped out?Use 3.14 to approximate and express your final answer to the nearest hundredth. How many hours will it take to drain all the water? What the answer someone help me!!! $200 in a savings account. The interest rate is 3%. Determine the exact amount of money that will be in theaccount after the following amounts of time.a) 2 months: b) 6 months:c) 11 months: d) 1 year:e) 2.5 years: f) 5 years: Help please can yall please answer 4-6 please In Sophia's church, you would see no pews. The worship service is called "The Divine Liturgy". You would smell incense and see images painted on wooden panels, called icons. What church does Sophia attend?Sarah belongs to the most persecuted religious group in American history. Her church was founded by a man who was distressed by the wide variety of competing denominations in America. She most likely belongs to what church? What is the main function of the reproductive system?A. It creates hormones that regulate growthB. It makes babies grow into teenagersC. It allows organisms to create offspring- new babies Maximize 4x + 5y + 70 subject to the constraints: 2x + y 8 x + 3y 5 x + y 6 x 0, y 0 a. Fix any constraints, as needed, and then convert the linear programming problem into a system of linear equations. b. Give a fully labeled initial tableau, and circle the pivot element. need help please answer these for me worth 10 points!! What are two different kinds of law? I REALLY NEED HELP ON THIS PLEASE HELP ME Explain the Renaissance painters attitude to colour Formula for tricarbon hexoxide evaluate the following definite integral Solve please!!!!bbbbb plzzzzzzzzzzzzzzzzzzzzzzzzzz help dont just take points This is a essay that has to be turned in at 6:00pm today Prompt 2: Should school systems offer students cash rewards for good grades and good behavior. Argue your stance. This is a essay Evaluate x^2 when x is 1/2 The information technology (IT) department of a real-estate group cosponsored a data warehouse with a County governement. In the formal proposal written by the IT team, costs were estimated at 8,000,000/- the projects duration was estimated to be eight months, and the responsibility for funding was defined as the business units. The IT department proceeded with the project before it even knew if the project had been accepted. The project actually lasted two years because requirements gathering took nine months instead of one and a half, the planned user base grew from 200 to 2,500, and the approval process to buy technology for the project took a year. Three weeks before technical delivery, the IT director canceled the project. This failed endeavor cost the organization and taxpayers 25,000,000/-.Why did this system fail?Why would a company spend money and time on a project and then cancel it?What could have been done to prevent this?