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Margarita [4]
1 year ago
11

Ollie has $55.75 for his visit to the zoo. He must pay $7.25 for admission and wants to feed as many animals as he can. Food for

the animals cost $3.25 each. What inequality represents the largest number of animal food that Ollie can buy?
7.25x+3.25≤55.75

7.25x+3.25<55.75

3.25x+7.25<55.75

3.25x+7.25≤55.75
Mathematics
1 answer:
Varvara68 [4.7K]1 year ago
7 0

The inequality that represents the largest number of animal food that Ollie can buy is 3.25x+7.25≤55.75.

<h3>What are inequality signs and what do they mean?</h3>

> means greater than

< means less than

≥ means greater than or equal to

≤ less than or equal to

<h3>What  inequality represents the largest number of animal food that Ollie can buy?</h3>

The inequality sign that would be used is ≤ , this is because the maximum amount he can spend is $55.75.

3.25x+7.25≤55.75

To learn more about inequality, please check: brainly.com/question/5031619

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Half-life of Po-210 is 140 days. If the initial mass of the sample is 5
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Answer:

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Step-by-step explanation:

we are given half-life of PO-210 and the initial mass

we want to figure out the remaining mass <u>after</u><u> </u><u>4</u><u>2</u><u>0</u><u> </u><u>days</u><u> </u>

in order to solve so we can consider the half-life formula given by

\displaystyle f(t) = a {0.5}^{t/T}

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since it halves every 140 days our T is 140 and t is 420. as the initial mass of the sample is 5 our a is 5

thus substitute:

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reduce fraction:

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By using calculator we acquire:

\displaystyle f(420)=0.625

hence, the remaining sample after 420 days is 0.625 kg

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