1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dolphi86 [110]
3 years ago
8

The fourth term of an arithmetic

Mathematics
1 answer:
yulyashka [42]3 years ago
5 0

Answer:

2

Step-by-step explanation:

<u>Given AP where:</u>

  • a₄ = 2a₂ - 1
  • a₆ = 7

<u>To find</u>

  • a₁ = ?

<u>Since</u>

  • a₄ = a₁ + 3d
  • a₂ = a₁ + d
  • a₆ = a₁ + 5d

<u>Initial equations will change as:</u>

  • a₁ + 3d = 2(a₁ + d) - 1  ⇒  a₁ + 3d = 2a₁ + 2d - 1 ⇒ a₁ = d + 1
  • a₁ + 5d = 7 ⇒ a₁ = 7 - 5d

<u>Comparing the above:</u>

  • d + 1 = 7 - 5d
  • 6d = 6
  • d = 1

<u>Then:</u>

  • a₁ = d + 1 = 1 + 1 = 2
  • a₁ = 2

The first term is 2

You might be interested in
Does anyone know this it sounds simple but there is usually something else to it so I’m not sure.
Artist 52 [7]
16 because 8 rooms have 8-11, 5 rooms have 4-7, and 3 rooms have 0-3 guests.
8 0
3 years ago
Read 2 more answers
Kevin has 14 buttermilks how many buttermilk is he need to make a pancakes7​
Luda [366]

Answer:

dont know redo the question

Step-by-step explanation:

7 0
2 years ago
A cylinder has a height of 4 meters and a radius of 1.5 meters. What is the approximate radius of a sphere that has the same sur
Mama L [17]

If the surface area of the cylinder is 12π square meters. Then the radius of the sphere will be 1.7 meters.

<h3>What is a cylinder?</h3>

A cylinder is a closed solid that has two parallel circular bases connected by a curved surface.

A cylinder has a height of 4 meters and a radius of 1.5 meters.

Then the approximate radius of a sphere that has the same surface area as the cylinder.

We know that the Surface area of the cylinder will be is given as

Surface area = 2πrh

Surface area = 2 x π x 1.5 x 4

Surface area = 12π square meters

Then we have

Surface area of sphere = surface area of cylinder

                              4πr² = 12π

                                  r² = 3

                                   r = 1.7 meters

More about the cylinder link is given below.

brainly.com/question/3692256

#SPJ1

4 0
2 years ago
The triangle on the right is scaled copy of the triangle on the left identified the scale factor
Lilit [14]

Answer:

is there supposed to be a picture with it? i can't solve it without more information. sorry

3 0
3 years ago
What is the greatest common factor of 28x²y-7xy^5?
Alchen [17]
The greatest common factor of this can be solved by looking at the individual parts and splitting it up.

First, we have 28 and 7.  Well, thats an easy one.  7 goes into 28 4 times so we are now left with 4 and 1.

We can also write the rest of this like this 4(x*x*y) - 1(x*y*y*y*y*y)

Now, what values are in both equations.  We have one x and one y that can be taken out of both.

We end up with 7xy(4x-7y^4)
3 0
3 years ago
Read 2 more answers
Other questions:
  • Answers to 2x-5=7 plz
    10·2 answers
  • A culture started with 2,000 bacteria. After 7 hours, it grew to 2,600 bacteria. Predict how many bacteria will be present after
    11·1 answer
  • A 16 ounce package of brown rice cost $.79 in the 32 ounce package of white rice cost $3.49 which package is a better deal
    15·1 answer
  • Someone please help me
    11·1 answer
  • A patrolman spends three times as many hours patrolling as she does completing paper work. If she works 36 hours per week, how m
    5·1 answer
  • What is the value of y?<br><br> Please show work of how you solved! Thankyou
    5·1 answer
  • What is the equation for 24 is equal to 25% of a number n.
    12·1 answer
  • Jovie's boss tells her to make 6
    14·1 answer
  • Please help problems below!!!
    10·1 answer
  • Which expression correctly shows 2x³y - 2y factored completely?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!