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Oksana_A [137]
3 years ago
6

Using only four 4's and any operational sign find the value of 8

Mathematics
1 answer:
torisob [31]3 years ago
4 0

Answer:

The answer is 4 + 4 + 4 - 4 = 8

Step-by-step explanation:

The four fours problem is one of the problems given in the book "The Man Who Calculated" by Malba Tahan, a Brazilian-born professor of mathematical sciences.

There are many complicated problems in this book made with the intention of using logic to find a value.

The 4 fours problem is based on using these numbers and using any operation to result in the numbers 1 through 10.

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There are 3 people at a party. If each person must shake hands with every other person at the party exactly once, how many hands
Dima020 [189]
<h2>Answer:</h2>

The total number of handshakes that would happen between the three people are:

                                    3

<h2>Step-by-step explanation:</h2>

There are three people at a party.

Let they be denoted by A,B and C.

Now, the total number of handshakes that would occur will be denoted by:

      AB, AC and BC

where AB denotes that A and B shake hands.

AC denote that A and C shake hands.

and BC denote that B and C shake hands.

Hence, total number of handshakes are:

                           3

5 0
3 years ago
-8r –9 &gt; -21...............
Lesechka [4]

Answer:

r < 3/2 or r < 1.5

Step-by-step explanation:

-8r - 9 > 21

-8r > -21 +9

-8r > -12

divide both sides by -8

= r < 3/2 or 1.5

6 0
3 years ago
What is the sum of 3 3/4 + 1 1/2=?
Gnesinka [82]

You need to find the least common denominator first which is 4. 3 3/4 can stay the same but you must have like denominators to add so change 1 1/2 to 1 2/4 by multiplying by 2/2. You know have like denominators and you can add whole numbers first 3+1=4 and then the fractions 3/4+2/4= 5/4 which is also 1 1/4. Now you add 4 so your answer is 5 1/4

5 0
3 years ago
Jona writes the expression (picture) to determine the number of questions answered correctly. What is an equivalent expression?
nirvana33 [79]

40-(1/10*40)

40-4

36

I hope this helps


4 0
3 years ago
I don’t understand please help
natali 33 [55]
Her position is at (6,9/2)
4 0
3 years ago
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