find a pattern for a sequence 17, 13, 9, 5,

Answers

Answer 1

Answer: an=21-4n

Step-by-step explanation:

17, 13, 9, 5, ...

13-17=-4

9-13=-4

5-9=-4

This sequence is an arithmetic progression a₁=17    d=-4

Hence,

[tex]a_n= a_1+(n-1)d\\\\a_n=17+(n-1)(-4)\\\\a_n=17-4n+4\\\\a_n=21-4n,\ \ \ \ n=1, 2, 3, 4, ...[/tex]

Answer 2
it minus’ 4 every time

Related Questions

9. The average amount of soda consumed per person in the US from 1990 to 2010 can be modeled by the following equation, where x is the number of years since 1990. f(x) 5.852x^4-0.002x³ + 0.006x² + 0.029x + 47.855 Find the average rate of change for each time interval. a. 1990 to 1996 b. 1990 to 2000 c. 2005-2010​

Answers

Using it's concept, the average rates of change are given as follows:

a. 1264.03 soda per person per year.

b. 5851.89 soda per person per year.

c. 128010.89 soda per person per year.

What is the average rate of change of a function?

The average rate of change of a function is given by the change in the output divided by the change in the input. Hence, over an interval [a,b], the rate is given as follows:

[tex]r = \frac{f(b) - f(a)}{b - a}[/tex]

For this problem, the function is given as follows:

f(x) = 5.852x^4 - 0.002x³ + 0.006x² + 0.029x + 47.855.

From 1990 to 1996, we have t = 0 to t = 6, hence:

f(0) = 47.855.f(6) = 5.852(6)^4 - 0.002(6)³ + 0.006(6)² + 0.029(6) + 47.855 = 7632.01.

Hence the rate is:

(7632.01- 47.855)/6 = 1264.03.

1264.03 soda per person per year.

From 1990 to 2000, we have t = 0 to t = 10, hence:

f(0) = 47.855.f(10) = 5.852(10)^4 - 0.002(10)³ + 0.006(10)² + 0.029(10) + 47.855 = 58566.75.

Hence the rate is:

(58566.75 - 47.855)/10 = 5851.89.

5851.89 soda per person per year.

From 2005 to 2010, we have t = 15 to t = 20, hence:

f(15) = 5.852(15)^4 - 0.002(15)³ + 0.006(15)² + 0.029(15) + 47.855 = 296300.39.f(20) = 5.852(20)^4 - 0.002(20)³ + 0.006(20)² + 0.029(20) + 47.855 = 936354.84.

Hence the rate is:

(936354.84 - 296300.39)/5 = 128010.89.

128010.89 soda per person per year.

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A ball is dropped from a state of rest at time t=0.
The distance traveled after t seconds is s(t)=16t2 ft.

(a) How far does the ball travel during the time interval [6,6.5]?
Δs= ___ft

(b) Compute the average velocity over [6,6.5].
ΔsΔt= ___ ft/sec

(c) Compute the average velocity over time intervals [6, 6.01] , [6, 6.001] , [6, 6.0001] , [5.9999, 6] , [5.999, 6] , [5.99, 6] .
Use this to estimate the object's instantaneous velocity at t=6.
V(6)=____ ft/sec

Answers

The distance traveled by the ball as a function of time, s(t) = 16•t² ft., and the rate of change, based on calculus, gives;

(a) During the time interval [6, 6.5], the distance traveled is 100 feet

(b) In the interval, [6, 6.5], the average velocity is 200 ft/s

(c) The calculated average velocities in ft/s, for the respective time intervals are;

[6, 6.01]. 192.16

[6, 6.001]. 192.016

[6, 6.0001]. 192.0016

[5.9999, 6]. 191.9984

[5.999, 6]. 191.984

[5.99, 6]. 191.84

The instantaneous velocity at t = 6 is v(6) = 192 ft/s

What are the average and instantaneous velocities of the ball?

The distance traveled as a function of time is s(t) = 16•t² ft.

(a) The distance traveled during the time interval [6, 6.5] is found as follows;

s(6) = 16 × 6² = 576

s(6.5) = 16 × 6.5² = 676

The distance traveled in the interval, [6, 6.5], ∆s(t) = 676 - 576 = 100

The distance traveled during the time interval [6, 6.5] = 100 feet

(b) Average velocity = ∆s(t)/∆t

∆t = 6.5 - 6 = 0.5

Therefore;

∆s(t)/∆t = 100/0.5 = 200

The average velocity = 200 ft./s

(c) The average velocities over the given time intervals, obtained using a graphing calculator, are;

Interval. Average velocity

[6, 6.01]. 192.16

[6, 6.001]. 192.016

[6, 6.0001]. 192.0016

[5.9999, 6]. 191.9984

[5.999, 6]. 191.984

[5.99, 6]. 191.84

Given that at t = 6, as the time interval approaches zero from the right and from the left, the average velocity approaches 192 ft./s, the instantaneous velocity at t = 6, v(6) is 192 ft./s

v(6) = 192 ft./s

Using calculus, differentiation, we have;

v(t) = ds/dt = 2×16 × t = 32•t

v(6) = 32 × 6 = 192

Therefore;

v(6) = 192 ft./s

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1. Rhonda is competing on a game show. First she randomly decides on a target of 1 or 2 and chooses card A or B. Then she spins the spinner on the other side
of the card.

a) What is P(1) if Rhonda chooses spinner A? P(1|A) = __

b) What is P(1) if Rhonda chooses spinner A? P(1|B) = __

c) Choose the correct symbol to make the statement true

Answers

Using probability we get (a) P(1|A) = 1/2 and (b)P(1|B) =3/4 , hence P(1|A) ≠ P(1|B).

Probability is the study of chance . The part of mathematics known as probability deals with fractional representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, 0 denotes the event's impossibility and 1 denotes certainty.

Probability is calculated by the fraction possible outcomes ÷ total outcomes

a) The first spinner has the total 4 sections. so there are 4 total outcomes.

Favorable outcome = 1

Total number of favorable outcome=2

Probability P(1|A) = favorable outcome ÷ total outcome

∴ P(1|A) =2/4 or P(1|A) =1/2

b) The first spinner has the total 4 sections. so there are 4 total outcomes.

Favorable outcome = 1

Total number of favorable outcome=3

Probability P(1|B) = favorable outcome ÷ total outcome

∴ P(1|B) =3/4 or P(1|B) =3/4

c)Therefore P(1|A)≠P(1|B)  so the events A and B are dependent.

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A helicopter takes off from the roof of a building that is 225 feet above the ground. The altitude of the helicopter increases by 125

Answers

Answer: i think you want y=125x+225

Step-by-step explanation:

the linear equation is created by sticking these two numbers into y=mx+b

so we start at 225 feet, which means that goes where b is, and the helicopter goes up 125 per whatever, which means we put 125 where m is

Find the average rate of change of f (x)=x-2√x on the interval [1, 9].

Answers

The average rate of change of f(x) = x - 2√x on the interval [1, 9] is 1/2.

What is average rate of change?

It is a measure of how much the function changed per unit, on average, over that interval.

We have,

f(x) = x - 2√x

On the interval [1,9].

[1, 9] = [a, b]

The average rate of change:

= f(b) - f(a) / b - a

= f(9) - f(1) / 9 - 1

= [(9 - 2√9) - (1 - 2√1)] / 8

= [ (9 - 6) - (1 - 2) ] / 8

= (3 + 1) / 8

= 4 / 8

= 1/2

Thus the average rate of change of f(x) = x - 2√x on the interval [1, 9] is 1/2.

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does anyone know how to do this

Answers

Answer:

Step-by-step explanation:

add 99 and 36 together to get 135 degrees

Answer:

135°

Step-by-step explanation:

You add the two angles together.  

Question
Shonda jogs 5 miles per hour.

Graph the relationship between the number of hours Shonda jogs and the total number of miles jogged.

Answers

here hope this helps u

Triangle CDE, with vertices C(-4,2), D(-3,7), and E(-7,6), is drawn inside a rectangle,
as shown below.what is the area in square units of triangle CDE?

Answers

Area of triangle ΔCDE  with the vertices C( -4 , 2 ), D( -3 , 7 ), and E( -7 , 6 ) is 9.5 square units.

We have a triangle ΔCDE with the vertices C( -4 , 2 ), D( -3 , 7 ), and E( -7 , 6 ). To calculate the area of triangle when its vertices are given we have the formula as shown below,

Area of triangle ΔCDE = [tex](1/2)(x_{1} (y_{2} - y_{3} ) + x_{2} (y_{3} -y_{1} ) + x_{3} (y_{1} -y_{2} ))[/tex]

Here, [tex]x_{1}[/tex] = -4 , [tex]x_{2}[/tex] = -3 ,[tex]x_{3}[/tex] = -7 , [tex]y_{1}[/tex] = 2 , [tex]y_{2}[/tex] = 7 and [tex]y_{3}[/tex] = 6

On substituting the above values in the formula of area of triangle , we will get

Area of triangle ΔCDE = (1/2)( -4 ( 7 - 6 ) + ( -3 ) ( 6 - 2) + (-7 ) ( 2 - 7 ))

Area of triangle ΔCDE = (1/2) ( - 4 - 12 + 35 )

Area of triangle ΔCDE = 19/2

Area of triangle ΔCDE = 9.5 square units

Area of triangle ΔCDE  with the vertices C( -4 , 2 ), D( -3 , 7 ), and E( -7 , 6 ) is 9.5 square units.

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What is the value of −5 + |−18|?

13
23
−13
−23

Answers

Answer:

your answr would be a 13

Step-by-step explanation:

Answer:

A) 13

Step-by-step explanation:

[tex]-5 + |-18|\\where\:|-a|=|a|\:\:\mathrm{if}\:a\neq 0\\|-18| = |18|\\= -5 + 18\\Inverse\:\:the\:\:expression\\= 18 - 5\\= 13[/tex]

Is 7 a solution of 5x - 3 = 12 ? Justify your answer

Answers

Answer:

Step-by-step explanation:

NO x=3

Solve the equation 5k^2−20k=15 . Present exact values of the solutions. If there are more than one solutions, separate them by a comma.

Answers

The solutions of the quadratic equation 5k² - 20k = 15 will be 4.65 and negative 0.65.

What are the roots of the equation?

Let the equation be ax² + bx + c = 0.

Then the roots of the equation will be

[tex]\rm x = \dfrac{-b \pm \sqrt{b^2 - 4 a c }}{2a}\\[/tex]

The quadratic equation is given below.

5k² - 20k = 15

Simplify the equation, then we have

k² - 4k = 3

k² - 4k - 3 = 0

Then the roots of the equation will be

[tex]\rm k = \dfrac{ -(-4) \pm \sqrt{(-4)^2 - 4 \times 1 \times (-3) }}{2 \times 1}\\\\k = \dfrac{4 \pm \sqrt {28}}{2}[/tex]

Simplify the equation, then we have

k = (4 ± 5.30) / 2

k = (4 + 5.30) / 2, (4 - 5.30) / 2

k = 4.65, -0.65

The solutions of the quadratic equation 5k² - 20k = 15 will be 4.65 and negative 0.65.

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A shirt normally costs $22.50 and is on sale for 12% off. What is the sale price?

Answers

Answer:

$19.8($2.7 subtracted off)

Step-by-step explanation:

[tex]P = 22.5(1 - 12\%)\\P = 22.5(1 - 0.12)\\P = 22.5(0.88)\\P = 19.8[/tex]

[tex]f(x)=x^{2} +2x-24[/tex]

Answers

X^2+2x-24
(X+6)(x-4)
Hope this helps

Solve the linear equation 7x+4^2=12x-8

Answers

Answer:

x = 24/5

Step-by-step explanation:

SOME HELP ME PLS, I ONLY NEED CORRECT ANSWERS SO DON’T PUT A RANDOM ANSWER

Answers

Answer:

≈67.81

Step-by-step explanation:

2x + 5 < -3 or 6x - 5 > 7

Answers

Answer:  2x-5/3=7

Tiger shows you, step by step, how to Isolate x (Or y or z) in a formula

The zookeeper mentioned that the scale used to weigh some of the larger animals can be off by 12 pounds. The scale read 438.2 lbs. for one of the larger animals. If the animal’s actual weight is x pounds, write an expression to represent the number of pounds the weight on the scale is from the actual weight of the animal. Then explain the range of values in which the actual weight might be.

Answers

The actual weight of the animal is between 450.2 and 426.2 pounds

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

Inequality can be used to show that two variables or numbers are not equal to each other.

The weight of the larger animals can be off by 12 pounds. Let x represent the actual weight of the animal. If the scale reads 438.2 lbs, hence:

|x - 438.2| = 12

x - 438.2 = 12; or -(x - 438.2) = 12

x = 450.2; or x = 426.2

The actual weight of the animal is between 450.2 and 426.2 pounds

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wats the answer help mee

Answers

24
Need an explanation?

Answer:

6

Step-by-step explanation:

The diameter is half of the given radius, therefore, split the radius in half.

[tex]\frac{12\:in^2}{2} = 6\:in^2[/tex]

Is 7x+y+3=y a linear equation

Answers

Answer:

7x+y=3 is not a linear equation.

Tom got 72 marks in 8 tests. How much did he get in each test on average?

Answers

Given

Tom got 72 marks in 8 tests.

Answer

[tex] \frac{72}{8} = 9[/tex]

he get 9 mark on average

At what rate of interest would a sum of money becomes one and half in 10 year ?

Answers

Shortcut trick

Let the Principle be 100.

P = 100, then A = 200 and SI will be 200 - 100 = 100

YES = 100 in 10 years

Rate = 100/10 = 10%.

∴ The interest rate is 10%.

The traditional method is:

Given:

Time period = 10 years

Formula used:

SI = (P × R × T)/100

A = P + SI

Where P = main amount, R = rate, T = time, SI = primary interest

Calculations:

Monetary amount 2P

YES = 2P - P

⇒ P = (P × R × 10)/100

⇒ 1 = R/10

⇒ R = 10%

∴ The interest rate is 10%

Arithmetic Mean of 128,144,146,143,136,142,138,120,140,152,144,140,150,142,154

Answers

Answer: 141.26666666667

Step-by-step explanation:

During a game of​ one-on-one, Rodney and Justin scored 39 points altogether. If Justin lost the game by 1 ​point, how many points did each player​ score? Use a system of linear equations in two variables to solve the problem

Answers

The points scored by Rodney is 20 points.

The points scored by Justin is 19 points.

How many points did each player score?

x + y = 39 equation 1

x - y = 1 equation 2

Where:

x = points scored by Rodney

y = points scored by Justin

In order to determine the points scored by Justin, take the following steps:

Subtract equation 2 from equation 1 :

2y = 38

Divide both sides of the equation by 2

y = 38/2

y = 19 points

To determine the value of x, substitute for y in equation 2

x - 19 = 1

Combine similar terms: x = 19 + 1

Add similar terms together: x = 20

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I’ll give points + brainalist

Answers

The line which is perpendicular to the given line y = -x/8 + 3 is y - 8x =-2, there slopes are negative reciprocals of each other

How to fine the line that is perpendicular to the given line

Given data

line y = -x/8 + 3

The equation of a line is represented as y = mx + c where m represents the slope. The unique feature of perpendicular line is that the slopes are negative reciprocals of each other.

Hence we find the line that has same value of m which is the slope

using the second option: y - 8x = -2

y - 8x = 2

y = 8x - 2

y = 8x - 2

the slope here is m = 8 which is equal to the negative reciprocals of the slope in the given equation and hence the correct option

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the difference between nine times a number and one more than five times the number

Answers

The required expression for the given statement is 4x + 1.

What is an expression?

An expression is a number, or a variable, or a combination of numbers and variables and operation symbols.

The given statement is,

the difference between nine times a number and one more than five times the number

Let x be the number.

Thus, we have

nine times a number = 9x

one more than five times the number = 1 - 5x

Thus, the numerical expression we get is

9x + (1 - 5x)

Expanding we get

9x + 1 - 5x

Solving we get

4x + 1

this is the required expression

Thus, the required expression for the given statement is 4x + 1.

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Debra bought 4 hammers and 6 tape measures for $94. Heather bought 5 hammers and 3 tape measures for $77 . Letting x represent the price of each hammer and y represent the price of each tape measurewrite a cost equation for both Debra and Heather

Answers

The cost equation for Debra is given by 4x + 6y = 94 and for Heather is 5x + 3y = 77.

What are Linear equations in two variables?

Linear equations in two variable have one, none, or infinitely many solutions, with the highest exponent order of 1 in each of the two variables. The standard form of a two-variable linear equation is ax + by + c = 0, where x and y are variables. Solutions can also be written in pairs, for example (x, y). A two-variable linear equation system is represented graphically by two straight lines that can intersect, parallelize, or coincide.

According to the given condition, we have 2 equations:

4x + 6y = 94
5x + 3y = 77

Now, multiply by 2 on both sides of the equation 5x + 3y = 77 to obtain:

10x + 6y = 154

Now, subtracting the equation 10x + 6y = 154 and 4x + 6y = 94.

[10x + 6y = 154] - [ 4x + 6y = 94]

6x + 0y = 60

x = 10

Putting the value of x = 10 in equation 4x + 6y = 94, we get

y = 9

So, the cost of 1 hammer is 10$ and tape is 9$.

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What is the image of (-4,-2) after a reflection over the x-axis?

Answers

According to the image  the x-axis, there is a reflection (- 4, 2 ).

How can a coordinate be found to mirror itself?

An image that has been flipped has no points that are closer to the mirror line than the original shape. The point's coordinate must be multiplied by -1 in order to reflect it over the axis. Simply add -1 to the coordinate of the point to reflect it over the axis.

What does the term coordinate geometry refer to?

Analytic geometry, often known as coordinate geometry, is the study of geometry using coordinate points. It is possible to determine distances between points using coordinate geometry, as well as divide lines into m:n segments, locate a line's midpoint, determine the area of a triangle in the Cartesian plane, and perform other operations.

According to the given data:

Under the x-axis reflection.

A point (x, y) → (x, -y), so

(- 4, - 2 ) → (- 4, 2 )

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2) Segundo o censo do IBGE, em 2010, o Brasil tinha 147,4 milhões de pessoas com 10 anos ou mais que eram alfabetizadas, o que correspondia a 91% da população nessa faixa etária. Determine o número de brasileiros com 10 anos ou mais em 2010
*
162 milhões
161,9 milhões
160,9 milhões
160 milhões

Answers

Answer: 162 million

Step-by-step explanation:

147.4 million= 147,400,00

Make a proportion:

147,400,000   -  91%

          x             - 100%

Hence,

[tex]\displaystyle\\x=\frac{147,400,000*100}{91} \\\\x=\frac{14,740,000,000}{91} \\\\x\approx162,000,000\\\\x=162 \ million[/tex]

The current plans describe a fountain 9 feet in diameter. Around the sides of the fountain, the contractors will install a chain barrier to prevent children from falling into the fountain. How much area in the park will the designers need to set aside for the fountain? How much chain will the contractors need to install? Round your answers to the nearest hundredth of a square foot or foot. Type the correct answer in the box. Use numerals instead of words.

Answers

hundred people bearajsbsj

Answer:

I don't know about this question

Draw the Venn diagram showing the inclusion relation among the different Sets of numbers.​

Answers

Answewhats the number mason

Step-by-step explanation:

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