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3 years ago

What lines are parallel?

Mathematics

1 answer:

gayaneshka [121]3 years ago

7 0

Answer:

Parallel lines are lines that never intersect or touch

No image? No help. Sorry if this doesn’t help

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A leprechaun places a magic penny under a girls pillow. The next night there are 2 magic pennies under her pillow. The following

kiruha [24]

Answer:

After 47 days she will have more than 90 trillion pennies.

Step-by-step explanation:

At the beginning there was 1 penny. At the second day the amount of pennies under the pillow became 2.

The amount of pennies doubled each day. So the series is,

$1,2,4,8,16,32,.....$

This series is in geometric progression.

As the pennies from each of the previous days are not being stored away until more pennies magically appear so the sum of series will be,

$S_n=\dfrac{a(r^n-1)}{r-1}$

where,

a = initial term = 1,

r = common ratio = 2,

As we have find the number of days that would elapse before she has a total of more than 90 trillion, so

$\Rightarrow 90\times 10^{12}\le \dfrac{1(2^n-1)}{2-1}$

$\Rightarrow 90\times 10^{12}\le \dfrac{2^n-1}{1}$

$\Rightarrow 90\times 10^{12}\le 2^n-1$

$\Rightarrow 2^n\ge 90\times 10^{12}+1$

$\Rightarrow \log 2^n\ge \log (90\times 10^{12}+1)$

$\Rightarrow n\times \log 2\ge \log (90\times 10^{12}+1)$

$\Rightarrow n \ge \dfrac{\log (90\times 10^{12}+1)}{\log 2}$

$\Rightarrow n \ge 46.4$

$\Rightarrow n\approx 47$

8 0

3 years ago

Solve for w. -2 = w + 7

DerKrebs [107]

Answer:

-9

Step-by-step explanation:

I just took the same test

6 0

3 years ago

Help!! What’s the answer?? 20 points!

Fittoniya [83]

Answer:

b or c I'm not for sure

Step-by-step explanation:

hope this helps

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4 years ago

Read 2 more answers

Can someone please help me!!!!!!

zhannawk [14.2K]

No sé esta respuesta

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3 years ago

What is 1/8 1/4 3/8 1/2 5/8 3/4 7/8 all together.

LiRa [457]

Answer: If you want me to add the fractions it is 7/2 or 3.5

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3 years ago