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Shtirlitz [24]
3 years ago
9

Which of the following correctly describes the sum of two rational numbers?

Mathematics
1 answer:
Elena-2011 [213]3 years ago
8 0

Answer:

"The sum of two rational numbers is rational."  

By definition, a rational number can be expressed as a fraction with integer values in the numerator and denominator (denominator not zero). So, adding two rationals is the same as adding two such fractions, which will result in another fraction of this same form since integers are closed under addition and multiplication. Thus, adding two rational numbers produces another rational number.

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Helpppppppp me plssss
lora16 [44]

Answer:

4x(3x^2-x+5)

Step-by-step explanation:

12x^3-4x^2+20x

=4x(3x^2-x+5)

8 0
3 years ago
What is XY=7a YZ=5a Xz=6a+24 In geometry
Cloud [144]

In light of the fact that point y is the point at which segment xz is divided, the value of the variable an is equal to 4.

<h3>How can I determine what the value of the variable an is?</h3>

Due to the fact that point y divides segment xz into two distinct halves, the following equation may be used to get segment xz's total length:

xz = xy + yz.

The following are the parameters for the test:

xy = 7a. yz = 5a. xz = 6a + 24.

As a result, we need to substitute into the equation and then solve for a.

xz = xy + yz

6a + 24 = 7a + 5a

12a = 6a + 24

6a = 24

a = 24/6

a = 4.

Read more on segment

brainly.com/question/17430860

#SPJ1

8 0
2 years ago
HELP PLEASE ASAP:
VashaNatasha [74]

The average rate of change, of the function, between the intervals, x = 2 to x = 6 is: 180.

<h3>What is the Average Rate of Change of a Function?</h3>

Average rate of change = \frac{f(b) - f(a)}{b - a}.

Given the function, f(x)= 3^x + 25,

The average rate of change using the intervals of, x = 2 to x = 6 would be solved as shown below:

a = 2

b = 6

f(a) = f(2)= 3^2 + 25 = 34

f(b) = f(6)= 3^6 + 25 = 754

Average rate of change = \frac{754 - 34}{6 - 2} = \frac{720}{4}

Average rate of change = 180

Therefore, the average rate of change, of the function, between the intervals, x = 2 to x = 6 is: 180.

Learn more about average rate of change on:

brainly.com/question/8728504

5 0
2 years ago
You walk 3/8 miles to a music store. Then you walk another 1/3 miles to a clothing store. How many miles have you walked in all?
Rudik [331]

Answer:

You have walked \frac{17}{24} miles

Step-by-step explanation:

In order to add these two fractions, we must find a common denominator. In this case, I used 24

\frac{3}{8} +\frac{1}{3} \\\\\frac{9}{24} +\frac{8}{24} =\frac{17}{24}

6 0
3 years ago
Read 2 more answers
How to convert 78% to a decimal
ololo11 [35]
0.78 is what you get when you convert 78% to a decimal. You will take the percent sign off and add a 0. In front of it.

It will be the same thing with any other two digit number. Let’s say it is 23% and you want to convert it to a decimal, your answer will be 0.23

Hope this helps!!
6 0
2 years ago
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