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EastWind [94]
4 years ago
15

What is the nth term of the arithmetic sequence 7,5,3,1?

Mathematics
1 answer:
Minchanka [31]4 years ago
3 0

Answer:

tn = 7 + (n - 1)*(-2) or

tn = 9 - 2n

Step-by-step explanation:

You are (beginning with 7) subtracting 2 from the term to the left.

a = 7

d = -2

tn = a1 + (n - 1)*d

tn = 7 + (n - 1)*(-2)

Try this out on n = 4

t4 = 7 + (4 - 1)*-2

t4 = 7 +  (3) (-2)

t4 = 7 - 6

t4 = 1 just as it says.

More generally

tn = 7 + (n - 1)*-2

tn = 7 + (-2n) + 2

tn = 9 - 2n

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Keegan deposited $700 into his bank account. After one year, his bank account balance was $761.60. What interest rate did he ear
ikadub [295]

Answer:

8.8%

Step-by-step explanation:

We first divide the new amount by the original and close it with brackets.

Our one year will be shown as 1/1 as an indices

(761.60/700)^1/1

= 1.088

We then convert it to 0.088 and times it by 100.

0.088×100= 8.8% Compound interest rate.

This is correct as:

700×1.088= 761.6

Have a nice day! :)

7 0
4 years ago
Lara is making wreaths to sell at 4 craft shows. For each wreath, she uses the same number of blue flowers. She has 7 dozen blue
Whitepunk [10]

The greatest number of blue flowers she can use for each show is 21.

Since Lara is making wreaths to sell at 4 craft shows, and for each wreath, she uses the same number of blue flowers, and she has 7 dozen blue flowers, to determine the greatest number of blue flowers she can use for each show you must perform the following calculation:

  • (7 x 12) / 4 = X
  • 84/4 = X
  • 21 = X

Therefore, the greatest number of blue flowers she can use for each show is 21.

Learn more about maths in brainly.com/question/25908442

3 0
2 years ago
What does it mean for the volume of a solid object to be 10 in.³ rely on the meaning of volume by phone to 1“ x 1“ x 1“ cubes in
kirza4 [7]

The insinuation of calling the volume of a solid 3-dimentional shape 10in³ is that the product of all of its dimensions as measured in units is; 10 in.³.

<h3>What is the meaning of volume as used in the task content?</h3>

It follows from the task content that the shape in discuss is a solid shape and consequently, one of it's measures is its volume which describes the space it occupies.

On this note, the meaning of a solid having a volume of 10in³ as indicated is that it's volume is; 10 times as large as the volume occupied by an object with unit dimensions 1“ x 1“ x 1“ in which case, the volume is; 1 in³.

Read more on volume of shapes;

brainly.com/question/16633960

#SPJ1

3 0
2 years ago
Mattias bought 6.5 lb of fruit for $8.06. what was the unit price?
UNO [17]

Answer: The correct answer is $1.24 per pound. If you buy 6.5 pounds at $8.06, you would divide $8.06 by 6.5 lbs to get your answer.

8.06/ 6.5= 1.24 the unit price

Step-by-step explanation:

4 0
4 years ago
LCM of 20 and 50 and GCF of 20 and 50 (Show all work) ( explain the steps you took to find the LCM and GCF)
Ksju [112]
<span>"In order to get the Least Common Multiple of 50 and 20 we need to factor each value and then we need to choose all of the factors which appear in any column and then multiply them."

50: 2  55

20: 225

LCM: 2255

</span><span>The (LCM) is: 2 x 2 x 5 x 5 = 100
</span>
<span>"To find the Greates Common Factor (GCF) of 20 and 50 we need to factor each value first and then choose all the copies of factors and then multiply them."
</span>
<span>20: 255
</span>
50: 55

The GCF is:  2 and 5 so you need to multiply and then you will get The Greates Common Factor. The greates common factor is: 2 x 5 = 10
4 0
3 years ago
Read 2 more answers
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