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3 years ago

What is the round to the biggest place value for 613

Mathematics

2 answers:

almond37 [142]3 years ago

7 0

This makes no sense in sorry.

r-ruslan [8.4K]3 years ago

5 0

To round 613 42,398 68,765 20,799 you first have to look at the second digit and 3rd digit for the number. If it is 4 or less round down if it is 5 or more round up. For example for 613 you would round it to 610. On 42398 you round it to 42000. For 68765 you would round to 69000, On 20799 you would round to 21000. I hope this helped you out and your son.

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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

Help please lol lol :))))

Papessa [141]

Answer:

is this required answer

Step-by-step explanation:

AB=3x-2

=3*8-2

=22

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lions [1.4K]

Supplementary angles sum up to 180°, suppose the supplement of 161° is x. Then
161+x=180
solving for x we subtract 161 from both sides
161-161+x=180-161
x=19
thus the supplement is 19°

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algol13

Answer:

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Step-by-step explanation:

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Luis is saving up to buy a new phone. He already has $25 and can save an additional $6 per week using money from his after schoo

sdas [7]

Answer:

$85

Step-by-step explanation:

he would have $85 bc if u save 6 per week for 10 weeks that 60 yk so then 60 pu 25 is 85 not that hard tbh

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2 years ago

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