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blsea [12.9K]
3 years ago
15

Out of 32 students in a class, 5 said they ride their bikes to school. based on these results,how many of 800 students in the sc

hool ride threr bikes to school?
Mathematics
1 answer:
Colt1911 [192]3 years ago
6 0
Do a proportion.
5/32= x/800
Cross multiply and divide
800 x 5= 4,000
4,000 divided by 32= 125
So answer is 125 students
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3 years ago
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:

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

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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

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8 0
3 years ago
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