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harkovskaia [24]
3 years ago
13

Help me with my answer if you are really the brainlest....Which equations support the fact that rational numbers are closed unde

r subtraction?
Select each correct answer.




8√−8√=0

54√−4√=44√

4.5−0.5=4

23√−3√=3√
Mathematics
2 answers:
finlep [7]3 years ago
8 0

Which equations support the fact that rational numbers are closed

82 *33√

44√

−8√

Brilliant_brown [7]3 years ago
8 0

Answer:

5.5 - 0.5 = 4

5√4 - √4 = 4√4

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Is it possible for a composite number to have more than one prime factorization? Is it possible for a number to have no prime fa
Nitella [24]
Prime factors are factors of a composite number that are indivisible except by the number 1 or the number itself. The answers to your questions are the following:

1. Yes, it is possible especially for very large numbers. 
2&3. No, because as mentioned previously, the default prime factors of numbers are 1 and the number itself. For example, 2 is a prime number. Its factors are 1 and 2.
4. Prime factorization are useful in fields of encryption. They make use of the basic prime numbers for the arithmetic modulus with the general equation: n=pq.
3 0
4 years ago
The freight is traveling at a constant speed the table below shows how far the train travels after different amounts of time com
xz_007 [3.2K]
To complete the table you will want to first write the equation.

You will need to find out what is happening to the time (number of hours) in order to get the distance.

You will use the numbers 3 and 120 to figure this out.

3 is multipled by 40. This means when you know the number of hours, you just multiply by 40 to find the distance.

When you know the distance, you divide by 40 to find the number of hours.

2 x 40 = 80
8 x 40 = 320
200/40 = 5

The equation is d = 40h.
7 0
3 years ago
Can anyone help me with this?
defon

Answer:

x = 42 degrees

y = 37 degrees

Step-by-step explanation:

Those are right angle triangles. So you know the right angles are 90 degrees, and each triangle gives you the measurement of another angle.

So, take the triangle in the top left (x):

180 - 90 - 48 = x

Same with the other triangle (y)

180 - 90 - 53 = y

4 0
2 years ago
The weight of a rock sample is measured to be 2.5 pounds. What is the percent of error in the measurement? 2% 5% 10%
elixir [45]

Answer:

The percent of error in the measurement is 2%

Step-by-step explanation:

The percent of error associated with a reported measurement is calculate using the formula;

percenterror=\frac{error}{measurement}*100

The error associated with a measurement is defined as half of the smallest unit of measurement used. The measurement reported was 2.5. The smallest unit of measurement for this reading is 0.1. The error is thus;

error = 0.1/2 = 0.05

The percent of error is thus;

\frac{0.05}{2.5}*100=2

 

6 0
3 years ago
Which point is not a solution to this graphed inequality?
Leya [2.2K]

Answer:

B. (-4, -3)

Step-by-step explanation:

If we graph the points onto the graph, you can see that (-4, -3) is not in the solution set shown in the graph. In order to be a solution in the set, the solution has to be graphed <em>above </em>the dotted line; it has to be in the shaded region.

7 0
3 years ago
Read 2 more answers
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