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miss Akunina [59]

3 years ago

11

Find the common difference of the arithmetic sequence 1,-1, -3, ...

1 answer:

frutty [35]3 years ago

4 0

Answer:
-2

Explanation:
The common difference of a sequence is the difference between consecutive terms. To find it, we subtract two consecutive terms.

1, -1, -3

1 and -1 are consecutive terms.
-1-1=-2

Therefore, the common difference is -2.

We can also try the same thing with -3 and -1, since they are also consecutive terms.

-3-(-1)
=-3+1
=-2

I hope this helps! Please comment if you have any questions.

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melisa1 [442]

Answer:

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Step-by-step explanation:

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3 years ago

1) James needs to obtain $80,000 for his daughter's future college tuition. He is looking to invest in an

Mazyrski [523]

Answer:

$ 50,340.97

Step-by-step explanation:

From the above question, we can deduce that we are to find the Initial amount invested which is also called the Principal.

The formula to find Principal in a compound interest question is:

P = A / (1 + r/n)^nt

Where:

A = Total Amount obtained after invested = $80,000

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3 0

3 years ago

MARKING BRAINLIST! PLEASE HELP!

Leviafan [203]

Answer:

$\boxed {\boxed {\sf C. \ 4 \ inches}}$

Step-by-step explanation:

Circumference is the perimeter of a circle. It can be found using the formula:

$c= \pi d$

However, we are given the radius.

The radius measures from the center to the edge of the circle.
The diameter measures from edge to edge through the center.
So, the diameter is twice the radius, or d=2r

The formula can be rewritten as:

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We know the circumference is 25.12 inches.

$25.12 \ in = \pi 2r$

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$25.12 \ in = (3.14) 2r$

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$8 \ in / 2 = 2r/2$

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