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blsea [12.9K]
3 years ago
7

Find the 75th term of the arithmetic sequence -1, 15, 31, ...−1,15,31,...

Mathematics
1 answer:
Readme [11.4K]3 years ago
3 0

Answer:

1183

Step-by-step explanation:

Common difference:

d = 31 - 15 = 16

nth term:

a_n = a_1 + (n - 1)d

Here, a_1 = -1

a_{75} = -1 + (75 - 1)(16)

a_{75} = 1183

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3 years ago
Number 17 and 16 plz help
fgiga [73]
Hi. Okay, #16 says write a decimal between 0.5 and 0.75. Then write it as a fraction in simplest form and as a percent.

write a decimal = I will pick 0.15 - now we need to write it as a fraction since the 5 is in the hundredths place our fractions would be:

15/100 = 3/20 (simplest form)

Now to change .15 to a percent we simply move the decimal two places to the right and add a % sign so. 15 = 15%

Question 17
How would you write 43 3/4% as a decimal

For this one, it is a lot easier than you think. The answer is 43.75. Let me tell you how...

To change 3/4 to a decimal, you are merely dividing the 4 into 3.00, hence the .75 and then just bring the 43 over. With problem like this that end in 1/4, 1/2, 3/4 just think of 4 quarters---1 quarter =.24, 2 quarters = .50, 3 quarters =.75

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I hope this helps. If you have any questions, please don't hesitate to ask.

Take care,
Diana


8 0
3 years ago
If answer is correct I will mark you as brainliest.
Sedbober [7]

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4 0
2 years ago
Under her cell phone plan, Janelys pays a flat cost of $46.50 per month and $5 per gigabyte. She wants to keep her bill under $7
allsm [11]

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8 0
3 years ago
Find the area of a regular octagon with
sattari [20]

Answer:

482.8 cm

Step-by-step explanation:

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