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aivan3 [116]
3 years ago
15

What is the recursive formula for this geometric sequence? -3, -21, -147, -1029, ...

Mathematics
2 answers:
stich3 [128]3 years ago
8 0

Answer:

an = an-1 *7

a1 = -3

Step-by-step explanation:

We are multiplying by 7 each time

-3*7 = -21

-21 *7 = -147

The formula for a geometric sequence is

an = a1 * (r)^(n-1)  where r is the common ratio and n is the term number

an = -3 ( 7) ^(n-1)

The recursive formula is

an = an-1 * r

an = an-1 *7

a1 = -3

SSSSS [86.1K]3 years ago
8 0

Answer:

Step-by-step explanation:

common ratio = 7

nth term = ((n-1)th term)×7 = a₁×7ⁿ⁻¹

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The following table shows a proportional relationship between mmm and nnn.
Marina CMI [18]

Answer:

70707mmm = 111nnn

Step-by-step explanation:

Using the basic equation of a line:

y = mx + c;. where m is slope and c is intercept on y axis.

Let mmm = y and nnn = x

(i) 333 = 212121m + c

(ii) 555 = 353535m + c

Making c the subject of the formula in both (i) and (ii)

c = 333 - 212121m = 555 - 353535m

353535m -212121m = 555 - 333

141414m = 222

m = 111/70707

Substitute in (i) above

c = 333 -333 = 0

Hence; y = 111/70707x + c

Finally, mmm = 111/70707 nnn

i.e. 70707mmm = 111nnn

Hope this helps.

5 0
3 years ago
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A farmer grows two types of grain in his fields. He has a seed budget of $17,000.00 and has spent $9,200.00 to plant wheat seed
Helen [10]
Okay so first you have to subtract 17000 from 9200 to see how much money you have left to spend. Then once you get that number, which is 7800, you have to see what's that maximum number of acres that you can get. So you divide 7800 from 41.00 and you can get your answer. Your answer will be 190 acres. 190 acres is the highest you can go without going over budget.
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3 years ago
I need help with 3-4 quick
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3-4 = -1

Hope this helps!

:)


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3 years ago
a strawberry cake is cut into three pieces. The Arc measures of all three pieces are congruent. What is the measure of angle XYZ
masya89 [10]

Answer:

I think the strawberry cake measure have to be 360⁰. so the arc measure is 360⁰÷3=100

so we have all three arcs congruent b/c all measures 100⁰

I think XYZ=100⁰

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3 years ago
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A 185-pound person burns 260 calories during a soccer game. Find the number of calories that a 250-pound person would burn durin
Olin [163]

Answer: The answer to this problem is 178 calories.

Step-by-step explanation:

To calculate the answer, simply get the percentage of calories a person would burn during exercise (I am using a calculator BTW).

185 / 260 = 0.711538462

Then, calculate 71.1538462% of 250 pounds.

250 * 0.711538462 = 177.884616

Finally, round up your answer. 177.884616 rounded up is 178.

5 0
4 years ago
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