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Minchanka [31]
3 years ago
6

What is commutative property in rational number ? please explain.

Mathematics
1 answer:
slavikrds [6]3 years ago
4 0

Answer:

Commutative property of addition of rational numbers: Two rational numbers can be added in any order. Thus for any two rational numbers a/b and c/d, we have. (a/b + c/d) = (c/d + a/b)

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You join an Internet service. You get the first 5 hours for free, and then you pay $2 per hour. How many hours of Internet use,
Vika [28.1K]

Answer:

27

Step-by-step explanation:

firstly we know we get 5 hour free so we know that when we add our total it will go up by 5. an easy way to do the equation is to take 45 and divide by two because we are essentially paying two of our 45 dollars every hour. this means that we will get half the amount we pay in hours. 45/2 =22.5 (do not round up because you will only get what you pay for and if you cant pay for a full hour you just do not get it) 22+5=27. so you get 27 hours of internet.

5 0
3 years ago
I have a circular piece of fabric I am going to make a tablecloth. The radius of the fabric is 2 meters. What is the area of the
Bond [772]

Answer:

4\pi

or

12.57

Step-by-step explanation:

I have a <u>circular</u> piece of fabric I am going to make a tablecloth. The <u>radius</u> of the fabric <u>is 2 meters</u>. What is the <u>area</u> of the tablecloth I can make

Essentially, you are attempting to find the area of a circle with a radius of 2 meters.

The formula for an area of a circle is \pi r^2, or pi times radius squared.

Plugging in 2 meters as your radius, that gets your answer to be 4\pi, or 12.57 in decimal.

4 0
3 years ago
Use the Pythagorean theorem to find the missing side of the right triangle a=7.5, b=12.3 c=?
Schach [20]

Answer:

14.41

Step-by-step explanation:

Pythagorean Theorem: a² + b²  = c²

a=7.5 b=12.3 c=❒

7.5² + 12.3² = 56.25 + 151.29 = 207.54

√207.54 is approximately 14.41

Hope this helps,

Philip

Brainliest always appreciated! <3

5 0
3 years ago
Step to solving equations x + 2 + x =22
timama [110]

Answer:

x= 10

Step-by-step explanation:

22-2=20

2x=20

x= 10

8 0
3 years ago
Factor completely: 8x2 + 72x + 112
lawyer [7]

Answer:

the answer to the problem is 9,756

6 0
3 years ago
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