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3 years ago

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Sam needs an average of 65 on his two science test. He scored 60 on his first test what is the minimum he can score on his secon

d test.

1 answer:

fenix001 [56]3 years ago

7 0

70

to find the answer do 60+x / 2 =65

Solver for x

multiply 2 on both sides to get 130

60+x=130

x=70

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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

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Friends of E: C,D

Enemies of E: A,B

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

8 0

3 years ago

Convert.<br> 1,000 grams =<br> kilograms

katrin2010 [14]

Answer:

1000 g = 1 kg

Step-by-step explanation:

1000 GRAMS IS EQUAL TO 1 KILOGRAM

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3 years ago

Read 2 more answers

You look at real estate ads for houses in Naples, Florida. There are many houses ranging from $200,000 to $500,00 in price. The

cricket20 [7]

Answer:

c) skewed to the right.

Step-by-step explanation:

We need to remember that is a distribution is skewed to the right then we have the following condition satisfied:

$Mode< Median$

And if is skewed to the left then we have:

$Mean$

If the distribution is symmetric we need to satisfy:

$Mean = Median=Mode$

For this case since we have most of the values between 200000 and 500000 when we put atypical values like 15000000 that would affect the sample mean and on this case the sample mean would larger than the sample median because the median is a robust measure of central tendency not affected by outliers.

So for this special case we can say that the $Mean>Median$ . And probably the median would be higher than the mode so then we can conclude that the best answer for this case would be:

c) skewed to the right.

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4 years ago

You and your friend are sharing 3/8 of a bag of candy how much of the bag will each of you get share it evenly. Is it going to b

olga_2 [115]

Answer:

You and your friend both get 3/16 of the bag.

Step-by-step explanation:

3/8 divided by 2 friends

3/8 / 2 = 3/16

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3 years ago

Two fair coins are being used in a probability experiment. During each trial of the experiment, the

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Answer: 50%

Step-by-step explanation:

If we can get a head tails combo in any order we could get a head/tails or a tails/head so there is a 50% probability of getting that combo in a trial

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