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postnew [5]
3 years ago
11

Find the first term of a sequence x+1,2x-18,2x-1,if this sequence is an arithmetic progression​

Mathematics
1 answer:
PIT_PIT [208]3 years ago
6 0

Answer:

a₁ = 37

Step-by-step explanation:

In an arithmetic progression the common difference d is

d = a₂ - a₁ = a₃ - a₂ , that is

2x - 18 - (x + 1) = 2x - 1 - (2x - 18) ← distribute and simplify both sides

2x - 18 - x - 1 = 2x - 1 - 2x + 18

x - 19 = 17 ( add 19 to both sides )

x = 36

Thus

a₁ = x + 1 = 36 + 1 = 37

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Answer:

1st term= 8 2nd term=6 3rd term=4 4th term=2 5th term=0 6th term=-2 7th term=-4 8th term=-6 9th term=-8 10th term=-10

Step-by-step explanation:

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7 0
2 years ago
I am very confused please solve and explain.
e-lub [12.9K]

Answer:

c = \frac{b^2-R^2}{4a}

Step-by-step explanation:

Given

R= \sqrt{b^2-4ac}

Clear the radical by squaring both sides

R² = b² - 4ac ( subtract b² from both sides )

R² - b² = - 4ac ( multiply all terms by - 1 )

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6 0
3 years ago
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What are all the digits of pi​
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4 0
2 years ago
Identify all the sets to which 0.41567 belongs. Choose from rational,irrational,whole,and integer
jok3333 [9.3K]
0.41567 is:
 
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4 0
3 years ago
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Tristán wants to build a square garden in his backyard if the garden is going to be 64 ft2 how many feet of material will he nee
Alex777 [14]

Answer:

Tristan will need 32 feet of material for the perimeter of the garden.

Step-by-step explanation:

Given that

Area of square garden = A = 64 square feet

Perimeter = P = ?

We know that for calculation of perimeter, length of side of square is required which is not directly given in the question. The area will be used to calculate length of side and then length will be used to calculate the perimeter.

So,

Area = A = s^2

s is for side

Putting the value of area

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Taking square root on both sides

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The length of side is 8 feet.

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Hence,

Tristan will need 32 feet of material for the perimeter of the garden.

3 0
3 years ago
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