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3 years ago

2. Ava bought a new computer and is now

Mathematics

1 answer:

Natali5045456 [20]3 years ago

6 0

Answer:

Ava has 0 dollars and zero represents the money she has.

Step-by-step explanation:

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Find a formula for the general term of the sequence 5 3 , − 6 9 , 7 27 , − 8 81 , 9 243 , assuming that the pattern of the first

Mkey [24]

Answer:

The formula to the sequence

5/3, -6/9, 7/27, -8/81, 9/243, ...

(-1)^n. (4 + n). 3^(-n)

For n = 1, 2, 3, ...

Step-by-step explanation:

The sequence is

5/3, - 6/9, 7/27, - 8/81, 9/243, ...

We notice the following

- That the numbers are alternating between - and +

- That the numerator of a number is one greater than the numerator of the preceding number. The first number being 5.

- That the denominator of a number is 3 raised to the power of (2 minus the position of the number)

Using these observations, we can write a formula for the sequence.

(-1)^n for n = 1, 2, 3, ... takes care of the alternation between + and -

(4 + n) for n = 1, 2, 3, ... takes care of the numerators 5, 6, 7, 8, ...

3^(-n) for n = 1, 2, 3, ... takes care of the denominators 3, 9, 27, 81, 243, ...

Combining these, we have the formula to be

(-1)^n. (4 + n). 3^(-n)

For n = 1, 2, 3, ...

4 0

4 years ago

One eight divided by two fifths

Veronika [31]

1/8 divided by 2/5 is 5/16 or 0.3125

7 0

3 years ago

A hang glider dropped his cell phone from a height of

elixir [45]

Answer:

It took the cell phone 4.15 seconds to reach the ground

Step-by-step explanation:

The formula is $t=\frac{\sqrt{h}}{4}$ , where t is the time and h is the height

The height of that the cell phone dropped from it is 275 feet above the ground

∴ h = 275

- Substitute the value of h in the formula to find t

∵ $t=\frac{\sqrt{275}}{4}$

∴ $t=\frac{5}{4}\sqrt{11}$

- Change it to decimal

∴ t = 4.15 seconds to the nearest 2 decimal places

It took the cell phone 4.15 seconds to reach the ground

5 0

4 years ago

Write in exponential form. 2 · 2 · 7 · 7 · 7 · 7 · 7 · 7 · 7

34kurt

2 to the second power times 7 to the seventh power

4 0

3 years ago

Read 2 more answers

Put both 8 and n as a factor

Lostsunrise [7]

The answer is 8n I

Hope I’m right sorry I’m not

6 0

3 years ago