# Difference AP 4

Calculate the difference of the AP if a1 = 0.5, a2 + a3 = -1.1

Result

d =  -0.7

#### Solution:

$a_{ 1 } = 0.5 \ \\ a_{ 2 }+a_{ 3 } = -1.1 \ \\ a_{ 2 } = a_{ 1 }+d \ \\ a_{ 3 } = a_{ 1 }+2d \ \\ 2a_{ 1 }+3d = -1.1 \ \\ d = (-1.1 -2 \cdot \ a_{ 1 })/3 = (-1.1 -2 \cdot \ 0.5)/3 = - \dfrac{ 7 }{ 10 } = -0.7$

Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!

Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

Tips to related online calculators
Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

## Next similar math problems:

1. Difference AP
Calculate the difference of arithmetic progression if the sum of its first 19 members Sn = 8075 and the first member is a1 = 20
2. Fifth member
Determine the fifth member of the arithmetic progression, if the sum of the second and fifth members equal to 73, and difference d = 7.
3. Determine AP
Determine the difference of the arithmetic progression if a3 = 7, and a4 + a5 = 71
4. AS sequence
In an arithmetic sequence is given the difference d = -3 and a71 = 455. a) Determine the value of a62 b) Determine the sum of 71 members.
5. The sum 2
The sum of five consecutive even integers is 150. Find the largest of the five integers. A.28 B.30 C.34 D.54 Show your solution and explain your answer.
6. Chairs
Determine the number of seats in the seventh row and ninth row, if 3rd row has 14 seats and in every next row of seats has five more than the previous row.
7. Cinema 4
In cinema are 1656 seats and in the last row are 105 seats , in each next row 3 seats less. How many are the total rows in cinema?
8. Tubes
Iron tubes in the warehouse are stored in layers so that each tube top layer fit into the gaps of the lower layer. How many layers are needed to deposit 100 tubes if top layer has 9 tubes? How many tubes are in bottom layer of tubes?
9. Square root 2
If the square root of 3m2 +22 and -x = 0, and x=7, what is m?
10. Crystal water
The chemist wanted to check the content of water of crystallization of chromic potassium alum K2SO4 * Cr2 (SO4) 3 * 24 H2O, which was a long time in the laboratory. From 96.8 g of K2SO4 * Cr2 (SO4) 3 * 24 H2O prepared 979 cm3 solution of base. S
11. Evaluation of expressions
If a2-3a+1=0, find (i)a2+1/a2 (ii) a3+1/a3
12. Equation 23
Find value of unknown x in equation: x+3/x+1=5 (problem finding x)
13. Third member
Determine the third member of the AP if a4=93, d=7.5.
14. Sequence 3
Write the first 5 members of an arithmetic sequence: a4=-35, a11=-105.
15. Seats
Seats in the sport hall are organized so that each subsequent row has five more seats. First has 10 seats. How many seats are: a) in the eighth row b) in the eighteenth row
16. Sequence
Between numbers 1 and 53 insert n members of the arithmetic sequence that its sum is 702.
17. Theorem prove
We want to prove the sentence: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?