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aksik [14]
3 years ago
14

Enter a recursive rule for the geometric sequence.

Mathematics
1 answer:
Jlenok [28]3 years ago
8 0

Answer:

x_{n} = 5 \ * \ (-2)^{n-1}

Step-by-step explanation:

Given the geometric sequence:

5, −10, 20, −40, ...

The first term is a = 5  

And the common ratio = r = -10/5 = -2

The general rule of geometric sequence is

x_{n} = a \ * \ r^{n-1}

So, the rule for the given geometric sequence is:

x_{n} = 5 \ * \ (-2)^{n-1}

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1/4m²-1

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74. Seven workers are hired to seed a field by hand. Each is given a plot 7 x 7
Lelu [443]

Answer:

The total area of the field is 343 square feet

Step-by-step explanation:

Let us solve the question

∵ There are 7 workers hired to seed a field by hand

∵ Each is given a plot 7 x 7  feet in size

→ The plot has shaped a square because its two dimensions equal

∴ The side of the plot = 7 feet

∵ The area of the square = side × side

∴ The area of each plot = 7 × 7

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→ To find the total area multiply the area of 1 plot by the number

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6 0
3 years ago
What is 7,491,001 rounded to the nearest hundrer thousand
VladimirAG [237]

Answer:

7,491,001 --> 7,500,000

Step-by-step explanation:

This is because rounding happens like this:

The rounding rule is: 5 and above rounds up, and 4 and under rounds down.

Here is a little rhyme for the rule: <em>5 and above rounds up like a dove. 4 and below, get down low!</em>

7,<u>4</u>91,001 --> you want to round the underlined digit. You round using the next digit to the right. The next digit over is the 9. Remember our rounding rule. Since 9 is above 5, the 4 would round up. Note - the digits after the rounded number always become zeros, even if you round up or down. So our new number is 7,500,000.

I hope I helped!

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>
8 0
3 years ago
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