2 years ago

Find a39 of the arithmetic sequence given a1 = -28 and d = -4.

Mathematics

1 answer:

seraphim [82]2 years ago

8 0

Hello !

$a_{n} = a_{1} + (n - 1) \times d$

$a_{39} = - 28 + (39 - 1) \times ( - 4) = - 28 + 38 \times ( - 4) = - 180$

You might be interested in

The cast of a play had a party. The drama teacher served 20 cookies and 40 carrot sticks as refreshments. Each cast member ate t

siniylev [52]

Ruhebjfjd fhske mfi7:73

4 0

3 years ago

Read 2 more answers

Can someone please help me solve this

pentagon [3]

Answer:

Step-by-step explanation:

A segment joining the midpoints of a triangle is

• Parallel to the third side

• Half the length of the third side

The segment DF joins the midpoints of 2 sides of Δ ABC , then

BC = 2 × DF = 2 × 4 = 8

5 0

3 years ago

***WILL MARK BRAINLIEST*** Write in Scientific Notation! #4

Dmitry [639]

1) 2.92• 10^-3 2) 2.16•10^7. 3)7.5•10^8

4 0

3 years ago

Read 2 more answers

Homework help, please

Vinvika [58]

Start the line at 3 on the y-axis (vertical). then go down two boxes and to the right three & make a mark at that point. keep going down two and over three until the end of the graph. then just connect the marks.

4 0

3 years ago

The positive multiples of a whole number were listed from least to greatest. If the third multiple was 42, what was the 5th mult

Nuetrik [128]

Answer:

$70$

Step-by-step explanation:

If the third multiple of the whole number is $42$ . This means that $42$ is completely divisible by the number $3$ .

$\dfrac{42}{3}=14$

So, the whole number is $14$ .

The fifth multiple would mean the product of $14$ and $5$

$14\times 5=70$

The fifth multiple of the whole number is $70$ .

5 0

3 years ago