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nevsk [136]
3 years ago
11

A driver works 40 hours a week for the first two months on the job. How much more per week does the driver make after 28 days?

Mathematics
1 answer:
vekshin13 years ago
7 0

Answer:

is there something missing in this question. i cant understand

Step-by-step explanation:

please tell me if there is more to this

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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:

<em>After </em><em>47</em><em> days she will have more than 90 trillion pennies.</em>

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
What is the square root of 64y16?<br><br> 4y4<br> 4y8<br> 8y4<br> 8y8
aliya0001 [1]
It is 8y4 becuze 8*2=64 and 4*2=16 and u *2 becuze *2 means square root sorry if I'm wrong :)
7 0
3 years ago
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Find the value of Q in the following system so that the solution to the system is {(x,y) : x-3y=4}
Assoli18 [71]

Answer:

Q=2

Step-by-step explanation:

hello :

the solution to the system is

{(x,y) : x-3y=4} means infinty solution

X-3y=4 ....(*)

Qx-6y=8....(**)

multiply  (*) by -2

-2x+6y = -8 (***)

add (*) and (***) : (Q-2)x =0

this ie true for reals x when  Q=2

3 0
3 years ago
Wanna help a girl out
Bad White [126]

Answer: 3580.50

Step-by-step explanation:

3 0
3 years ago
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Find the area of a floor that measures 12 1/2 feet by 15 feet.
emmainna [20.7K]

Answer:

7.5

Step-by-step explanation:

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2 years ago
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