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4 years ago

If AB = 2x, complete the statements below. 2 + (AD)2 = (2x)2 (AD)2 = x2 – x2 (AD)2 = x2 AD =

Mathematics

2 answers:

elena-s [515]4 years ago

8 0

Answer:

X 4 3 X

Step-by-step explanation:

storchak [24]4 years ago

7 0

Answer:

Step-by-step explanation:

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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

In one hour a seamstress can sew 48 yards of material. How many yards can she sew in 15 minutes?

hoa [83]

Answer:

Step-by-step explanation:

you know there are 4 - 15 minutes parts in 1 hour. so if she can sew 48 yards in 1 hour, divide 48 by 4 =12 yards

6 0

3 years ago

Astrology is pseudoscience. What can you conclude about the claims made by astrology? A. They are based on logical reasoning B.

Viktor [21]

Answer:

Step-by-step explanation:

No correlation has ever been found. Scientific disciplines based on hypothesis but with no consistent body of supporting evidence are called pseudoscience. Astrology is one of them. Effects of astrology do not exist in the Universe.

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3 years ago

14x to the power of -2 , for x=7

OverLord2011 [107]

Answer:

:5:5&&'4&4&4&:&;4"33*2**223$&4&4&55&

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2 years ago

Read 2 more answers

The average July rainfall for charleston , south carolina, is 8.35 inches The average October rainfall is 3.87 inches on the ave

beks73 [17]

To find this we need to subtract July rainfall (8.35) and Octobers rainfall (3.87) which equals 4.48.

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3 years ago