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Dafna11 [192]
3 years ago
5

Divide. −10 ÷ −2

Mathematics
2 answers:
Novay_Z [31]3 years ago
8 0

Answer:

-10 / -2 = 5

Step-by-step explanation:

Oksi-84 [34.3K]3 years ago
7 0
5 because when dividing by two negative numbers the negatives cancel giving you a positive integer
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Show that in a group of five people (where any two people are either friends or enemies), there are not necessarily three mutual
sveta [45]

Answer:

Lets call the people A,B,C,D and E. We need to find an example where there are not 3 mutual friends and not three mutual enemies.

Lets start by assuming that A has 2 friends, B and C, and 2 enemies, D and E.

Since we want A,B and C not to be mutually friends, then B and C neccesarily have to be enemies.

Now, since B and C are enemies, they cant be enemies at the same time with D, and they also cant be enemies at the same time with E. Therefore one of them has to be friends with D and one has to be friends with E.

Also, since D and E are enemies with A, they neccesarily need to be friends.

From the fact that D and E are friends, we coclude that they cant have a friend in common, as a consequence, B has to be friends with one of D and E and C has to be friend with the other. We can assume that B is friend with D and C is friend with E. If we use that, we have the following friendship configuration

---------------------

Friends of A: B, C

Enemies of A: D,E

-------------------------

Friends of B: A,D

Enemies of B: C, E

------------------------

Friends of C: A,E

Enemies of C: B,D

------------------------

Friends of D: B,E

Enemies of D: A,C

----------------------------

Friends of E: C,D

Enemies of E:  A,B

--------------------------

As you can check, there is not three mutual friends nor three mutual enemies.

8 0
3 years ago
V=πr^2h/3 solve for h
Aneli [31]

Answer:

h = 3V / πr^2

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

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adell [148]
Is there a picture?

So we can figure it out
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Step-by-step explanation:

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Round 26.32 to the nearest tenths.​
Snezhnost [94]

Answer:

26.3

It’s really simple actually

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