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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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The mother's age is 8 times her son's age. After 6 years, the age of the mother will be 9/2 times her son's age. The present age
Yakvenalex [24]

Answer:

son = 6 mother = 48

Step-by-step explanation:

Mother = m

son = s

m = 8s

m+6 = 9/2 * (s+6)

so

2(8s + 6) = 9(s +6)

16s + 12 = 9s + 54

16s - 9s = 54 - 12

7s = 42

s = 42/7 = 6 years old

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3 years ago
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Which point on the graph shows the price of 6 ounces of cheese? Use the formula y=x÷2 to find y when x is 6.
RSB [31]

The value of y is 3 when x is 6.

Solution:

The given table is the amount of cheese in ounces and the cost price.

Let x represents the amount of cheese and y represents the cost price.

The formula which derived from the table is y = x ÷ 2.

That is $y=\frac{x}{2}.

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$y=\frac{x}{2}

Substitute x = 6 in the formula, we get

$y=\frac{6}{2}

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Hence the value of y is 3 when x is 6.

7 0
3 years ago
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