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Liula [17]
3 years ago
10

Mrs.fan wrote 5 tenths minus 3 hundredths on the board. Michael said the answer is 2 tenths because 5 minus 3 is 2. Is he correc

t? Explain.
Mathematics
1 answer:
yKpoI14uk [10]3 years ago
3 0
0.5 - 0.03 = 0.47
2 tenths= 0.2
5 tenths and 3 hundredths are not similar units so you can't simply subtract 5 and 3. The correct answer is 0.47.
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If you add a negative
creativ13 [48]

Answer:

Then you don't change the sign.

Two like signs become a positive sign.

Two unlike signs become a negative sign.

4 0
3 years ago
Select all of the following that would be an acceptable set builder notation for the set {7, 8, 9, 10, 11, 12, 13, 14}.
ludmilkaskok [199]
<h3>Answer: Choice B</h3>

{x | x is a natural number with 6 < x < 15}

===========================================================

Explanation:

The given set is in roster notation. Think of a baseball or football team (or any sports team) how their roster lists out all of the players. In this case, each number is like a player.

The idea here is to simplify the set so we don't have to write out every single item. Instead we have a rule to make things a bit simpler.

In this case, the set {7, 8, 9, 10, 11, 12, 13, 14} describes all natural numbers from 7 to 14

This means we can say {x | x is a natural number with 6 < x < 15}

Note how the endpoints x = 6 and x = 15 are not included. This is because there isn't a "or equal to" as part of the inequality sign. Sure enough 6 and 15 are not part of the original set.

An equivalent set would be \{ x | \text{ x is a natural number with } \ 7 \le x \le 14\} and here we have "or equal to" involved. For this example, the endpoints x = 7 and x = 14 are included.

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

Something like choice A and choice D are not complete answers because we don't know if x is a whole number, natural number, rational number, real number, etc. If x was say a real number, then x = 10.75 would be involved with choice A. But 10.75 is not part of the original set.

5 0
3 years ago
Evaluate the function.<br> f(x) = –22 – 9x + 20<br> Find f(9)
Alenkasestr [34]

Answer:

f(9)=-22-9(9)+20=-83

Step-by-step explanation:

f(9) means x = 9, Just substitute 9 into the function.

-9(9) = -81

-22-81+20 = -83

8 0
2 years ago
What is 24tenths÷8
Taya2010 [7]

Answer:

.03

Step-by-step explanation:

The answer would be .03 as you are dividing .24 by 8, which would be 3 if there was no decimal point. Though, .24 is two places past the ones place so the answer would have to be two places past the ones place. If you divide it, 8 can't go into 2, so you would put a 0 above it. Though, 8 can go into 24 three times, so you would put three. Therefore, your answer would be .03 as it is two places past the ones place and if it is multiplied by 8, it would make .24, or 24 tenths.

7 0
2 years ago
If the r-value, or correlation coefficient, of a data set is 0.908, what is the coefficient of determination to three decimal pl
belka [17]
0.824.....Apex if answer changed not my fault but kinda helpful
5 0
3 years ago
Read 2 more answers
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