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3 years ago

PLZZ HELP ASAP !!! HURRY !!!

Mathematics

1 answer:

Anuta_ua [19.1K]3 years ago

6 0

Answer:

A. 16 rolls

Step-by-step explanation:

First, convert 120 meters to inches.

120 meters X 39.37 inches = 4724.4 inches

Then convert the 4724.4 inches into feet.

4724.4/12 = 393.7 feet

Therefore, she needs approximately 383.7 feet.

To get the number of rolls, divide 383.7 by 25 since each roll has 25 feet of ribbon.

383.7/25 = 15.748

15.748 can be rounded up to 16 rolls.

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4 years ago

How to find the real number solution of the equation x3+27x=9x2+27?

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3 years ago

Find the explicit formula for the geometric sequence cn given below. Note that c1=6.

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The explicit formula for the geometric sequence $c_{n}$ is

$c_{n}=6(\frac{-1}{3})^{n-1}$

Step-by-step explanation:

The formula of the nth term of a geometric sequence is

$a_{n}=a(r)^{n-1}$ , where:

a is the first term of the sequence
r is the common ratio between the consecutive terms

The geometric sequence of $c_{n}$ is 6 , -2 , $\frac{2}{3}$ , $\frac{-2}{9}$ , $\frac{2}{27}$

∵ $c_{1}$ = 6

∵ $r=\frac{c_{2}}{c_{1}}$

∵ $c_{2}$ = -2

∴ $r=\frac{-2}{6}$

- Divide both term by 2 to simplify it

∴ $r=\frac{-1}{3}$

∵ $c_{n}=c_{1}(r)^{n-1}$

- Substitute the value of $c_{1}$ and r in the rule above

∴ $c_{n}=6(\frac{-1}{3})^{n-1}$

The explicit formula for the geometric sequence $c_{n}$ is

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Learn more:

You can learn more about the geometric sequence in brainly.com/question/1522572

#LearnwithBrainly

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3 years ago