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4 years ago

Find the fourth term of an arithmetic sequence if the first term is 12 and the common difference is -3. A (subscript 4)=???

Mathematics

1 answer:

storchak [24]4 years ago

7 0

Answer:

The fourth term of the sequence is 3

Step-by-step explanation:

For an nth term in an arithmetic sequence

A(n) = a + (n - 1)d

Where n is the number of terms

a is the first term

d is the common difference

From the question

a = 12

d = - 3

So the fourth term of the sequence is

A(4) = 12 + (4 - 1)-3

= 12 + (3)(-3)

= 12 - 9

The final answer is

Hope this helps you.

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3 years ago

What is the value of Y ?

gtnhenbr [62]

Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

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SALARY In a recent year, the median salary for an engineer in the United States was $55,000 and the median salary for a computer

dalvyx [7]

Given :

Median salary of engineer , E = $55,000 .

Median salary of computer engineer , C = $52,000 .

To Find :

The total cost for a business to employ two engineers and three programmers for 1 year .

Solution :

Now , cost of paying two engineers .

$C_e=\$2\times 55000\\\\C_e=\$110000$

Also , cost of paying three programmers .

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4 years ago

On the grid draw the graph of x + 2y =7

Elena-2011 [213]

Answer:

See attachment for graph

Step-by-step explanation:

Given

$x + 2y = 7$

Required

Draw the graph

First, we identify at least 2 possible values of x and y

Let $x = 1$

Solve for y

$x + 2y = 7$

$1 + 2y = 7$

$2y = 6$

$y = 3$

So, a point is: $(1,3)$

Let $x = 3$

Solve for y

$x + 2y = 7$

$3 + 2y = 7$

$2y = 7 -3$

$2y = 4$

$y = 2$

So, another point is: $(3,2)$

Plot $(1,3)$  and  $(3,2)$  on the graph, then draw a straight line through both points

See attachment for graph

5 0

3 years ago