3 years ago

The first term of an arithmetic sequence is -5, and the tenth term is 13. Find the common difference.

1 answer:

6 0

Hello,

$u_{1} =-5\\
 u_{2} =-5+d\\
 u_{3} =-5+2d\\
 u_{4} =-5+3d\\
...\\
 u_{10} =-5+9d=13\\
==\ \textgreater \ 9d=18 \\
==\ \textgreater \ d=2

$

You might be interested in

MissTica

Try to find the best domnatior and then do the mixed number then simplify

8 0

2 years ago

mixas84 [53]

Answer:

Step-by-step explanation:

x $\left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \left \{ {{y=2} \atop {x=2}} \right. \int\limits^a_b {x} \, dx$ XE[_4.2,2.2]

8 0

2 years ago

Aleksandr-060686 [28]

Answer:

61236

Step-by-step explanation:

4 0

2 years ago

nexus9112 [7]

N+4+10=25
n+4= 15
n=11

6 0

2 years ago

PSYCHO15rus [73]

F(19)= (3/(19+2)) - sqrt(19-3)
= (3/21) - sqrt(16)
= (1/7) - 4
= (1/7) - (28/7)
= -27/7
= - 3 6/7

4 0

3 years ago