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bagirrra123 [75]
3 years ago
10

Evaluate 15 squared show work

Mathematics
1 answer:
Sedbober [7]3 years ago
6 0

Answer:

225

Step-by-step explanation:

15x15=225

There is a cool trick you can do. Lets take 28 and square it.

First you round the number up. 28 rounded is 30. You rounded up by 2 (30-28=2) so you minus 2 from 28.

You are left with these two numbers, 26 and 30. Add a zero to the 26.

You now have 260 and 3 (you remove 0 on the 30 since you added it to the 26)

Then you multiply by 3.

260x3=780

Then you add the square of the number you rounded up too, which is 2.

You are left with this equation.

(2^2)+780= 784

28x28=784.

This works for numbers below 100 and integers

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30 points!
Thepotemich [5.8K]

Using the probability concept, we have that:

  • There is a 0.6286 = 62.86% probability that a randomly selected person is female or prefers mint chocolate chip.
  • There is a 0.3714 = 37.14% probability that a randomly selected person prefers cookie and cream or vanilla.

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

In this problem, there are 35 people, out of which 17 are female and 5 are male that prefer mint chocolate chip, hence:

p = (17 + 5)/35 = 22/35 = 0.6286.

There is a 0.6286 = 62.86% probability that a randomly selected person is female or prefers mint chocolate chip.

Out of the same 35 people, 11 people prefer cookie and cream and 2 people prefer vanilla, hence:

p = (11 + 2)/35 = 13/35 = 0.3714

There is a 0.3714 = 37.14% probability that a randomly selected person prefers cookie and cream or vanilla.

More can be learned about probabilities at brainly.com/question/14398287

#SPJ1

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Step-by-step explanation:

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~Hoped this helped~

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