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Bezzdna [24]
3 years ago
12

The first three terms of an arithmetic sequence are given. Find an expression for tn in terms of n, and write the tenth term for

each sequence. PLEASE HELP ASAP!!
a, 2a, 3a, . . .

tn = ?
t10 = ?

THANK YOU!!!!!!!!!!!!!!!!
Mathematics
2 answers:
ser-zykov [4K]3 years ago
5 0

Answer:

  tn = n·a

  t10 = 10a

Step-by-step explanation:

We observe that the coefficient of 'a' is the term number:

  tn = n·a

  t10 = 10a

Gre4nikov [31]3 years ago
4 0

Answer:

tn = n·a

 t10 = 10a

Step-by-step explanation:

We observe that the coefficient of 'a' is the term number:

 tn = n·a

 t10 = 10a

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What is 8c + 10b ÷ 7a if c = 7, b = 12, and a = 5 Please give a full and good explanation for a brainliest...​
PolarNik [594]

Answer:

141  5/7

Step-by-step explanation:

8c + 10b ÷ 7a

Let c = 7, b = 12, and a = 5

8*7 + 10*12 ÷ 7*5

Multiply and divide from left to right

56+120 ÷7*5

56+ 600/7

Get a common denominator

392/7 + 600/7

992/7

Change from an improper fraction to a mixed number

141  5/7

8 0
3 years ago
Read 2 more answers
Write 1/10 in hundredth,fraction,decimal
Ipatiy [6.2K]
0.10
1/10

Hope I helped!

Let me know if you need anything else!

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4 0
3 years ago
Find the length of the leg of the right triangle leave your answer in simplest radical form
erastova [34]

Answer:

a =12*sqrt(2)

Step-by-step explanation:

3.  The Pythagorean theorem states

a^2 + b^2 = c^2  where a  and b are the legs and c is the hypotenuse

a^2 +21^2 = 27^2

a^2 +441 =729

Subtract 441 from each side

a^2 +441-441 = 729 -441

a^2 =288

Take the square root of each side

sqrt(a^2) = sqrt(288)

sqrt(xy) = sqrt(x)sqrt(y)

a = sqrt(144)sqrt(2)

a =12*sqrt(2)

7 0
2 years ago
Can you help me with this please
djyliett [7]
The answer to this problem is simple all you have to do is pemdas and you get the answer 0.6
5 0
3 years ago
Solve the equation. 9+2 14x – 31 = 19<br> Please answer it step by step
siniylev [52]

Answer:

x =  \frac{41}{28}  = 1 \frac{13}{28}

Step-by-step explanation:

9 + 2(14x - 3) = 19

9 + 28x - 31 = 19

- 22 + 28x = 19

28x = 19 + 22

28x = 41

\boxed{\green{x =  \frac{41}{28}  = 1 \frac{13}{28}}}

4 0
3 years ago
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