An arithmetic sequence has this recursive formula:

What is the explicit formula for this sequence?

An Arithmetic Sequence Has This Recursive Formula:What Is The Explicit Formula For This Sequence?

Answers

Answer 1

Answer:

C

Step-by-step explanation:

the explicit formula for an arithmetic sequence is

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

from the recursive formula in the form

[tex]a_{n}[/tex] = [tex]a_{n-1}[/tex] + d

given

[tex]a_{n}[/tex] = [tex]a_{n-1}[/tex] - 7

with d = - 7 and a₁ = 4 , then explicit formula is

[tex]a_{n}[/tex] = 4 + (n - 1)(- 7)


Related Questions

Use the given right triangle to find​ ratios, in reduced​ form, for sin​ A, cos​ A, and tan A. 6 10

Answers

Answer:

1.0452

Step-by-step explanation:

10*sin6

10*0.1045

the answer is 1.0452

Need one person help for math Plato class

Answers

Answer:

The answer is B. 13.7 inches

i hope this can help you! :)

NEED HELP ASAP!!! PLEASE

Answers

The linear function that has a different rate of change from y = -3x+4 is A, a function with a y-intercept of -4 that passes through the point (-3,-13)

What is an intercept?

An intercept is the point where a straight line or a curve meets with the x or y axes.

Analysis:

The rate of change is the same as slope. The slope of y = -3x + 4 is -3,

All other functions Except A have a slope of -3.

for linear function A,

if y = mx + c, c = -4, x = -3, y = -13

-13= -3m - 4

-3m = -9

m = 3

In conclusion, linear function A with a y-intercept of -4 passing through the point (-3,-13) has a different rate of change from y = -3x + 4

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Translate then Solve for the variable:
The sum of two times a number and 10 is five times the difference of a number and six.
Solve for the variable then type the answer after rounding your answer to the nearest hundredths

Answers

The linear equation will be 2x + 10 = 5(x - 6). Then the value of the variable x will be 23.33.

What is the linear system?

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

Translate then Solve for the variable:

The sum of two times a number and 10 is five times the difference between a number and six.

Let the number be x.

Then the equation will be

2x + 10 = 5(x - 6)

Then the value of x will be

2x + 10 = 5x - 60

5x - 2x = 60 + 10

      3x = 70

        x = 23.33

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Two adjacent rooms are rectangles, both of length 13 feet by 10 feet. Jerry wants to change the carpets in both rooms. How many square feet should he order?

Answers

Answer:

  260 square feet

Step-by-step explanation:

The area of a rectangle is given by the formula ...

  A = LW

The area of two same-size rectangular rooms will be double the area of one of them.

__

room area

Each room has an area of ...

  A = LW = (13 ft)(10 ft) = 130 ft²

carpet order

The order for carpet must be for 2 times the area of one room:

  carpet order = 2 × 130 ft² = 260 ft²

Jerry should order 260 square feet of carpet.

In the diagram, points D and E are marked by drawing arcs of equal size centered at B such that the arcs intersect and . Then, intersecting arcs of equal size are drawn centered at points D and E. Point P is located at the intersection of these arcs.

Based on this construction, m∠ABP is
°, and m∠ABC is
°.

Answers

The measure of ∠ABP and ∠ABC are 32° and 64° respectively.

what is a bisector of an angle?

Any line which divides an angle into two equal halves is a bisector of that angle.

Analysis:

Since the arcs at D and E are drawn with the same radius and arc using center D and E are intersected by line PB( which is the bisector of the full arc with center B) then ∠ABP = ∠PBC = 32°.

∠ABC = ∠ABP + ∠PBC

∠ABC = 32 + 32 = 64°

In conclusion, ∠ABP and ∠ABC are 32° and 64°

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Answer:ABP is 32 degrees, and ABC is 64 degrees

Step-by-step explanation: bi hope this helped if not sorry:)

Calculate the area of a triangle with a base of 6 cm and a height of 12 cm

Answers

Answer:

36

Step-by-step explanation:

12 x 6 = 72 / 2 = 36 because the area of a triangle is base times height divided by 2

Answer: 36 cm^2

Step-by-Step Explanation:

Base (b) = 6 cm
Height (h) = 12 cm

Area = 1/2 * b * h

Therefore,
= 1/2 * b * h
= 1/2 * 6 * 12
= 1 * 3 * 12
= 3 * 12
= 36

Area = 36 cm^2

Inaaya has a jar of coins containing only nickels, dimes, and quarters. A nickel is worth 5 cents, a dime is worth 10 cents, a quarter is worth 25 cents, and a dollar is worth 100 cents.

The ratio of the number of quarters to the number of dimes to the number of nickels in the jar is 9:3:1. The total value of all the coins in the jar is $18.20. How many coins does Inaaya have in her jar?

Answers

Answer: 91 coins

9 x 25 = 2.25 dollars
3 x 10 = 30 cents
1 x 5 = 5 cents

Let H be the set of real numbers less than or equal to eleven

Answers

Answer:

The answer would be Set: "S" = the set of natural numbers greater than 11.

Hope this helps!

if g(X)=3x-5,then find g^-1(5),where g is one to one onto function​

Answers

Answer:

g^-1(5)=10/3

Step-by-step explanation:

g(x)=3x-5

g(x)= y

g^-1( y)=x

3x-5=y

3x=y+5

x=y+5/3

g^-1(y)=y+5/3

g^-1(5)=5+5/3

g^-1(5)=10/3

what is the quotient of 1/5 divide by (-5/7) =

Answers

Answer:

-7/25

Step-by-step explanation:

=(1/5) ÷ (-5/7)

Copy dot flip

=(1/5) * (-7/5)

=-7/25

Show that tanø+Cotø = Secø Cosecø​

Answers

Answer:

True.

Keys:

Manipulate left/right sides

Step-by-step explanation:

[tex]\tan \left(\theta\right)+\cot \left(\theta\right)=\sec \left(\theta\right)\csc \left(\theta\right)\\\tan \left(\theta\right)+\cot \left(\theta\right)\\=\frac{\cos ^2\left(\theta\right)+\sin ^2\left(\theta\right)}{\cos \left(\theta\right)\sin \left(\theta\right)}\\=\frac{1}{\cos \left(\theta\right)\sin \left(\theta\right)}\\\\\sec \left(\theta\right)\csc \left(\theta\right)\\=\frac{1}{\cos \left(\theta\right)\sin \left(\theta\right)}[/tex]

What was shown throughout this problem?

We showed that two different sides are capable of taking the same form.

3. The circumference of a circle is 607 cm. What is the diameter of the circle?
120 cm
30 cm
60 cm
90 cm

Answers

Answer:

the circumference is 30 cm,

Step-by-step explanation:

Hope it helps

Photo is attached, please help! Will give brainliest.

Answers

Answer:0.124402866242

Step-by-step explanation:here’s my attempt: dv/dt=d/dt(4pi/3r^3). 100=d/dt((4pi/3)*(8+X*t)^3) at t=0. 100/(4(pi)*8^2)=x where x is the rate of change of the radius. Not 100% sure though

Determine the true statements about trend lines in scatterplots. Check all that apply.
A trend line can be used to make predictions in real-world situations.
A scatterplot that shows no correlation between the variables does not have a trend line.
A line of best fit must contain at least two of the original points.
A regression line and trend line are equivalent terms.

Answers

Answer:

give that 13.3cm is 15% of a certain length, what is the complete length

Answer: A,B and D ARE THE CORRECT ANSWERS

Step-by-step explanation:

PLEASE HELP ME!!! I WILL GIVE BRAINLEST




PLEASE

Answers

Answer:

7

Step-by-step explanation:

you just multiply from the least and once you get to the greatest, it should be 7

What additional information is needed to prove the triangles are congruent by the SAS postulate

Answers

Answer: [tex]\angle XWY \cong \angle ZWY[/tex]

Step-by-step explanation:

We know that [tex]\overline{WY} \cong \overline{WY}[/tex] by the reflexive property, so we need the included angles to be congruent (meaning [tex]\angle XWY \cong \angle ZWY[/tex]

Help me please it’ll be a big help

Answers

Here’s the answer to your question. option C Is correct

A motor boat can travel 45 km downstream in 2 h and 30 min; and 39 km upstream in 3 h and 15 min. What is the speed of the boat in still water? What is the speed of the current?

Answers

Answer:

c = speed of current = 3 km/hr

r = speed of boat in still water = 15 km/hr

Step-by-step explanation:

Use the formula distance = time x rate to set up these equations

45 = 2.5 (r+c)

39 = 3.25 (r-c)

(r + c) is the speed of the boat added to the speed of the current, downstream

(r - c) is the speed of the boat minus the speed of the current, upstream

Use one equation to isolate a variable then substitute it into the other equation to solve the system.

39/3.25 = r - c

12 + c = r

45 = 2.5 ( 12 + c + c )

18 = 12 + 2c

6 = 2c

c = 3

Then use the equation 12 + c = r from above

12 + c = r

12 + 3 = 15

r = 15 km/hr

Triangle \triangle ABC△ABCtriangle, A, B, C is reflected across line nnn to create \triangle A'B'C'△A

B

C

triangle, A, prime, B, prime, C, prime.
A triangle A B C. The length of side CA is sixty one units. The angle B is sixty seven degrees. The line n is to the right of triangle A B C. Triangle A prime B prime C prime is the image of triangle A B C after being reflected across line n. The length of side C prime B prime is fifty seven units. Angle A prime is fifty nine degrees.





A triangle A B C. The length of side CA is sixty one units. The angle B is sixty seven degrees. The line n is to the right of triangle A B C. Triangle A prime B prime C prime is the image of triangle A B C after being reflected across line n. The length of side C prime B prime is fifty seven units. Angle A prime is fifty nine degrees.
What is the measure of \angle C∠Cangle, C?

Answers

Answer: [tex]54^{\circ}[/tex]

Step-by-step explanation:

Because reflections are rigid motions, we know that [tex]\triangle ABC \cong \triangle A'B'C'[/tex], and thus [tex]\angle B \cong \angle B'[/tex].

It follows that since angles in a triangle add to 180 degrees, [tex]m\angle C'=180^{\circ}-59^{\circ}-67^{\circ}=\boxed{54^{\circ}}[/tex]

b) 9 11 13 15 17

Terms of
n, an expression for the nth term

Answers

Answer:

Tn= a+( n-1) 3

Tn= 9+(n-1)3

ow many decimals numbers are there whose value equals the average of their digits?

For example, 2.3 has the digits 2 and 3. Their average is 2.5 -- so that doesn’t work. But there are some that do!

There are a few rules:

Answers

Answer:

Step-by-step explanation:

there are infinite numbers between 2 and 3 having average=2.5

2.49,2.51

2.48,2.52

2.47,2.53

2.46,2.54

.................

2.491,2.509

2.492,2.508

2.493,2.507

......................

one side of a square is represented

Answers

Answer:

therees nothing here to help you with?

Step-by-step explanation:

srry abt that but add the square number

OMG SUPER HARD QUESTION I DONT KNOW
bob has 2 apples then he eats 1 apple how many apples does he have left

Answers

Answer:

1 apple

Step-by-step explanation:

unless you are a psycho who counts the one he ate as still in his possession,

therefore 2 - 1 = 1

hope this helps:)

Which criterion, if any, could prove the triangles are congruent?

Answers

Answer: None

Step-by-step explanation:

There is only one pair of angles and one pair of sides, which is not sufficient to prove triangle congruence.

Is anyone able to solve this equation? It’s urgent

Answers

Answer:

1500

Step-by-step explanation:

You can find the complete solution in the given attachment

A bicycle wheel travels exactly 26/pi inches in I full rotation, what is the area, to the nearst square inch, of a circle the same size az the bicycle wheel?​

Answers

The area, to the nearst square inch, of a circle the same size az the bicycle wheel is  531 inches².

What is the area of the circle?

A circle is a bounded figure which points from its center to its circumference is equidistant.

Area of a circle = πr²

Where :

π = pi = 22/7

R = radius

The full rotation of the wheel is equal to the circumference of the wheel.

circumference of the wheel = 2 πr

26π = 2 πr

r = 13 inches

Area = 22/7 x 13³ = 531 inches²

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Write the standard number.

3.6 * 10^-6​

Answers

Answer:

The answer is 0.0000036.

Step-by-step explanation:

Move the decimal place 6 spaces to the left. I hope this helps! :)

Which function is shown in the graph below?
O y = logo 4x
O y = log₁x
O y = log3x
O y = log10x

Answers

I think it is oh=log1x hope this helps

The correct function shown in the graph is,

⇒ log₁₀ (ax) = 1

What is mean by Function?

A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

It has been given that the point (3,1) is on the graph. For the point (3,1) to be on the graph, the following must hold true:

⇒ log₁₀ (ax) = 1

or , ax = 10¹ = 10

Thus, x  = 10/a

So, in order for the point (3,1) to lie on the graph, of all the given options the closest we can get is when we have Option D, that is, when a = 3. That will make x = 3.33 and thus, .

⇒ log (3 × 3.33) = 0.99 ≈ 1

Thus, out of the given options only Option D seems to be the most probable answer.

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triangle.
A,
angle CAB = 90°, angle ABC = 52° and AC = 9.2.
Calculate the length of BC rounded to 3 SF.

Answers

[tex]\\ \rm\Rrightarrow sin\theta=\dfrac{Perpendicular}{Hypotenuse}[/tex]

[tex]\\ \rm\Rrightarrow sin52=\dfrac{AC}{BC}[/tex]

[tex]\\ \rm\Rrightarrow sin52=\dfrac{9.2}{B C}[/tex]

[tex]\\ \rm\Rrightarrow B C=\dfrac{9.2}{sin52}[/tex]

[tex]\\ \rm\Rrightarrow B C=9.3[/tex]

Answer:

11.7  (3 s.f.)

Step-by-step explanation:

Given information:

∠CAB = 90°∠ABC = 52°AC = 9.2

As one of the given angles is 90°, the triangle is a right triangle.

Draw the triangle using the given information (see attached) to help visualize the problem.

To calculate the length of BC, use the sine trigonometric ratio:

[tex]\sf \sin(\theta)=\dfrac{O}{H}[/tex]

where:

[tex]\theta[/tex] is the angleO is the side opposite the angleH is the hypotenuse (the side opposite the right angle)

From inspection of the attached triangle:

[tex]\theta[/tex] = 52°O = AC = 9.2H = BC

Substitute the values into the formula and solve for BC:

[tex]\implies \sf \sin(52^{\circ})=\dfrac{9.2}{BC}[/tex]

[tex]\implies \sf BC=\dfrac{9.2}{\sin(52^{\circ})}[/tex]

[tex]\implies \sf BC=11.67496758...[/tex]

[tex]\implies \sf BC=11.7\:\:(3 \:s.f.)[/tex]

Therefore, the length of BC is 11.7 (3 s.f.).

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