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Dominik [7]
3 years ago
12

Answer all these questions for 15 points,

Mathematics
1 answer:
nydimaria [60]3 years ago
8 0

Answer:

18. 32

19.17

20.36

21.-87

22.0

23.-10

24.9>4

25.8>-8

26.7>-3

27.-3,5,4,-6

28.1,8,-7,-5

Step-by-step explanation:

For example in the 'lines' |27| it represents the number. if it were let's say |-7| to "simplify" it would make it 7. if it were |7| it would be 7. and if it was let's say -|7| it is -7 because you do |7| but the negative is in front of it still causing it to be negative. if it were -|-7| you'd do what's in the lines/parentheses so it would be - 7 so you'd have to move the negative in front of the 7 to make it negative so your answer is -7

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Evaluate the following expression when x = -1, y = 2, z = -3, and<br> w = 4.<br> x² - y²
vaieri [72.5K]

Answer:

-3

Step-by-step explanation:

-1*-1=1

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1-4

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7 0
3 years ago
Please help giving brainly
Irina18 [472]

Answer:

proportion used: 7/20

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Step-by-step explanation:

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Read 2 more answers
A group of 30 students from your school is part of the audience for a TV game show. The total number of people in the audience i
s344n2d4d5 [400]

Answer:

5.3%

Step-by-step explanation:

The final probability is calculated by means of the quotient of the specific combinations and the total of total combinations

Let's start with the specific ones,

First the number of combinations of 4 of the 30 students getting a spot, i.e .:

A combinations are equal to:

nCx = n! / x! * (n-x)!

Replacing:

30C4 = 30! / (4! * 26!) = 27405

Segundo the number of combinations of the other audience members filling the other 4 (8-4) spots n = 110, 140 - 30

110C4 = 110! / (4! * 106!) = 5773185

Now the total combinations of possible 8 contestants from the audience

140C8 = 140! / (8! * 132!) = 2.98 * 10 ^ 12

Finally, the probability is equal to:

P = (30C4 * 110C4) / 140C8

replacing:

P = 27405 * 5773185 / 2.98 * 10 ^ 12

P = 0.053

Therefore the probability is 5.3%

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3 years ago
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Given the expression
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Second, combining like terms
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When Maxwell solved his equation, he got 5=5. If he did everything correctly, what does this solution tell him?
hodyreva [135]

Answer: that the solution is true

Step-by-step explanation: if you get something like 10=10 it’s true but if you get like 4= 7 it’s false

4 0
2 years ago
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