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mihalych1998 [28]
3 years ago
8

I really don’t understand this

Mathematics
1 answer:
vladimir2022 [97]3 years ago
3 0

Well, in percentages, Other = 100% - 40% - 37,5% = 22,5%

In numbers, Other = 18.

If 18___22.5%=0.225

Then x___100%=1

So x = (18*1)/0.225 = 18/0.225 = 80, and 80 is the first answer, the number of students participated.

For second question, which is how many chose football, we have:

x_____37.5%=0.375

18____22.5%=0.225

x = (18* 0.375) / 0.225 = 30

The second answer is 30.

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Find the value of the variable.
Zielflug [23.3K]

Answer:

x = 8, y = 8\sqrt{2}

Step-by-step explanation:

a^2+b^2=c^2

8^2+8^2=c^2      Both 8 and x sides are congruent so they're equal.

64+64=c^2      Add 64 + 64.

c^2=128           Square root 128

c^2=8\sqrt{2}

Final answers: x = 8, y = 8\sqrt{2}

3 0
3 years ago
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Answer:

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Step-by-step explanation:

7 0
3 years ago
I will give brainliest answer
snow_tiger [21]

Step-by-step explanation:

inner region

A=πr^2

A=π*6^2

A=π*36cm^2

A=113.09cm^2

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Mark brianliest if my answer suit your question

5 0
4 years ago
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Snezhnost [94]

Answer:

There are 685464 ways of selecting the 5-card hand

Step-by-step explanation:

Since the hand has 5 cards and there should be at least 1 card for each suit, then there should be 3 suits that appear once in the hand, and one suit that apperas twice.

In order to create a possible hand, first we select the suit that will appear twice. There are 4 possibilities for this. For that suit, we select the 2 cards that appear with the respective suit. Since there are 13 cards for each suit, then we have {13 \choose 2} = 78 possibilities. Then we pick one card of all remaining 3 suits. We have 13 ways to pick a card in each case.

This gives us a total of 4*78*13³ = 685464 possibilities to select the hand.

6 0
3 years ago
Please help! I will give brainliest and 5 stars!
Ierofanga [76]

Answer:

(A.) x = y - 4

Step-by-step explanation:

All you need to do is subtract the 4 from both sides, giving you the final equation as x = y - 4.

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3 years ago
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