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attashe74 [19]
2 years ago
10

Last month John had $240 in his savings account. He got money for his birthday and now he has $320. What is the percent of chang

e for his account? ​
Mathematics
1 answer:
Elis [28]2 years ago
4 0

Answer:

Should be a 33.33% increase

Step-by-step explanation:

320 divided by 240 to get 1.33, anything above 1 is increase, so its a 33% increase.

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a gardener uses a tray of 6 conical pots to plant seeds. each conical pot has a radius of 3 centimeters and a depth of 8 centime
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The volume of a cone is one-third of the product of the area of the base times the height, i.e.

(1/3)π(r^2)*h = (1/3)π(3cm)^2 *(8cm) = 75.40 cm^3

Now multiply that by the number of cones: 6 * 75.40 cm^3 = 452.40 cm^3.

Then the answer is 452 cm^3
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When f(x) = 7x^2 - 2x + 4, evaluate f(-1)<br> f(-1) =
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Answer:

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Step-by-step explanation:

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3 years ago
Oscar was not safeguarding his personal identification and chose a two-digit PIN for his debit card using the numbers 0 - 9. Wit
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There are 90 different identification numbers possible.

<h3>What are the permutation and combination?</h3>

In terms of mathematical concepts, “permutation” and “combination” are related to each other.

The combination is the counting of selections that we make from n objects.

Oscar was not safeguarding his personal identification and chose a two-digit PIN for his debit card using the numbers 0 - 9.

There are 10 possible values for each digit of the PIN (namely: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9), so there are;

10 × 10 = 100 total possible PINs.

Now, because you can't use the same number twice, we subtract 10 from 100 because there are 10 numbers that can match themselves.

100 -10 =90

Hence, there are 90 different identification numbers possible.

Learn more about combination here;

brainly.com/question/24138361

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2 years ago
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Answer:

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Step-by-step explanation:

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