Question

Please answer quickly 50 points and brainliest

Answer 1

All the relevant inequality signs for each given number are as used below.

How to use equality symbols?

15)  π is approximately 3.14 and 19/6 is approximately 3.167. Thus, the inequality here is; π < 19/6

16) √81 is +9 which is positive and -√121 is -11 which is negative. Thus, the inequality here is; √81 > -√121.

17) Negative number is always lesser than a positive number and as such the inequality here is;  -14/15 < √0.87

18) From the given three numbers, we have;

1.875, √64 = 8, and -√121 = -11.

in order from least to greatest, we have;  -√121, 1.875, √64

19) The given numbers we can say that;

√67.4698 ≈ 8.214.  

64.56/8.477 ≈ 7.616

8.775

Thus, in order from least to greatest would be;

64.56/8.477,  8.214, 8.775

20) From the given 3 numbers, we can say that;

π ≈ 3.1416

√10.565  = 3.25

-15/5.8

Thus, in order from least to greatest we have -15/5.8, π, √10.565

Read more about Equality Symbols at; brainly.com/question/11457776

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Answer 2

Answer: see below

Step-by-step explanation:

15)  π is approximately 3.14 and 19/6 is approximately 3.167, so π < 19/6

16) √81 is positive and -√121 is negative, and positive is always bigger than negative, so √81 > -√121.

'Larger than' or 'less than' is not just determined by the size (magnitude) of the number. The sign ( + or -) matters, too!

If there is a negative sign in front of the radical sign (the square root sign), then you take the positive root of the number under the sign, then put a negative in front of it.

17) same here. negative is less than positive, so -14/15 < √0.87

18) If we do the computations we get the three numbers are 1.875, √64 = 8, and -√121 = -11. The only negative is -11, so that is smallest. Between the other two, 8 is the largest. So, placed in order from least to greatest, we have  -->  -11, 1.875, 8

19) √67.4698 ≈ 8.214.  

      64.56/8.477 ≈ 7.616

      And we are given 8.775

   In order from least to greatest would be 7.616, 8.214, 8.775

  Then - VERY important - answer back in the way they were given to you.

64.56/8.477, $\sqrt 67.4698$ , 8.775

20) We are given 3 numbers and only one is negative, so that is the least (smallest) one. For the other two, let's get the decimal representations and compare them.

π ≈ 3.1416

$\sqrt{10.5625}$ = 3.25, exactly. We can see this is larger than π.

So, in order from least to greatest we have -15/5.8, π, $\sqrt{10.5625}$

I hope this helps.