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Verdich [7]
3 years ago
8

PLEASE ANSWER 18 AND 18

Mathematics
1 answer:
seraphim [82]3 years ago
4 0

18 & 18.  I like it.

The square root of a natural number won't be rational unless the number is a perfect square.  So not a and not b but yes to C.

For d, -0.125374..., we can't really tell. The three dots tells us it goes on.  There's no indication of a repeat but we can't assume it doesn't repeat either.   For d the correct answer is cannot be determined.

OK, onto 18.

The square root of 12 is irrational so has a nonterminating, nonrepeating decimal expansion.

7/8 has a finite decimal expansion, 0.875.   When the reduced denominator doesn't have any prime factors besides 2 and 5 we'll get a finite decimal expansion.  Answer: b

5/11 has 11 as a factor in the denominator, so is an infinite repeating decimal.

I'll guess there's three dots after 0.81818181 so that one doesn't terminate either.

---------

Bonus

0.21 rational, equal to 21/100

3/12 rational, it's the ratio of integers

√12 - 2 is irrational because of the √12

4.125... can't really tell because the ... may hide a repeating or nonrepeating part.


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Justine and Meagan played a trivia game. Justine answered a question incorrectly and lost 7 points. Then Meagan answered correct
Nataliya [291]

Answer:

m = -j, or in this case, m=-(-7)

Step-by-step explanation:

Assuming that Justine's score is represented by j and Meagan's score is represented by m, we know that j will always be the opposite of m.

To represent opposite, we put a negative sign before the variable.

This makes the current number, even if it's negative, the opposite value.

Let's test it out.

Since Justine's score is -7, substituting it into the equation makes it  m=-(-7). We know that two negatives make a positive, so m=7.

Now let's assume Justine's score is 7. Plugging it into the equation, we get m=-(7). That's the same thing as m = -1(7), and -1 times 7 is -7.

Hope this helped!

8 0
3 years ago
Please answer this correctly
Andreyy89

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7 0
3 years ago
Consider this system of linear equations:
Vinil7 [7]

Answer:

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3 years ago
I have 4 questions (please help) IM BEGGING YOU i need help! please!!!!
oksian1 [2.3K]
1) 18h = 252
You divide each side by 18, so you can get "h" alone on a side, and its value on the other side of the equation.
(18h)/18 = 252/18
h = 14 (Answer C)

2) 31d = 186.
Same Thing, you divide each side by 31, so you can get "d" alone on a side, and its value on the other side of the equation.
(31d)/31 = 186/31
d= 6 (Answer B)

3) 55c = 385
Again, same thing, You divide each side by 55, so you can get "c" alone on a side, and its value on the other side of the equation.
(55c)/55 = 385/55
c = 7 (Answer B)

4) 50w = 1050
You divide each side by 50, so you can get "w" alone on a side, and its value on the other side of the equation.
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As you can notice, they all follow the same steps: dividing by the coefficient of the variable both sides, so you can the variable alone on the first side of the equation, and its value on the second side.

Hope this Helps! :)
6 0
3 years ago
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