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3 years ago

Find a formula for the nth term

Mathematics

1 answer:

Airida [17]3 years ago

7 0

Answer:

$a_{n}$ = - 1.3n - 2.4

Step-by-step explanation:

The n th term of an arithmetic sequence is

$a_{n}$ = a₁ + (n - 1)d

where a₁ is the first term and d the common difference, thus

$a_{n}$ = - 3.7 - 1.3(n - 1) = - 3.7 - 1.3n + 1.3 = - 1.3n - 2.4

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3 years ago

3. Franklin has 5 red marbles, 16 black marbles, 3 miniature green balls, and 9 miniature yellow balls in a jar at home. What is

Korolek [52]

Answer:

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3 years ago

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2 years ago

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3 years ago

Read 2 more answers

What would the answer be???

Korolek [52]

Answer:

The solution is obtained by adding the two equations.

The solution is: (x, y) = ( $- \frac{2}{3}$ , $- \frac{7}{3}$ )

Step-by-step explanation:

We are given two equations with two variables. The strategy is to eliminate one variable and solve for both the variables.

The two equations are:

$7x + y = - 7 \hspace{15mm} \hdots (1)$

$2x - y = 1 \hspace{15mm} \hdots (2)$

Adding both the equations, we get:

$7x + 2x + y - y = - 7 + 1$

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Substituting the value of 'x', we get the value of y.

We substitute in (2). [Can be substituted in any equation].

We get: y = 2x - 1

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$\implies -\frac{4}{3} - 1$

$\implies y = -\frac{7}{3}$

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3 years ago