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vredina [299]
3 years ago
5

How can properties of operations be used to add expressions?

Mathematics
1 answer:
Gelneren [198K]3 years ago
7 0
Use this. Hope it helps

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If 5 pens cost Rs 90,what is the cost of 8 pens?
Brilliant_brown [7]

Answer:

Rs. 144

Step-by-step explanation:

To what the cost of each pen, divide 90/5

You get 18. So each pen costs 18.

Now multiply 18 by 8 and you would get 144.

So, it would cost Rs. 144

8 0
4 years ago
13.02-6y=8y using the method of solving linear equations
gregori [183]

well add -6y to 6y which equals 0 then add 8y to 6y which equals 14y

now you have 13.02=14y 

now you can divide 13.02 divided into 14 which equals 0.93

0.93 = y

5 0
3 years ago
1/4 + (-3/4)= <br> -4 1/2 + 2= <br> -8+ (-1 1/8) =
AlekseyPX
1/4+ (-3/4) = -0.5      

-4 1/2 +2= -2.5     

-8+ (-11/8)= -9.125    
4 0
4 years ago
The mean age of 5 people in a room is 39 years.
alexgriva [62]

Answer:

fast multiply 5 by 39 to get the total age of the five people now as you are told those per 5 so imagine the six person being you if you enter you're going to add to their ages so they mean is going to be for six people so take the six people x their mean age now we have two different total ages for the five people and for the six people subtract the total age of the 5 from the 6th total ages to get the age of the person who entered the room if you don't understand please ask me and be willing to help

3 0
3 years ago
Read 2 more answers
Anna found that there are 34 options for pizzas with different toppings at her local pizzeria. How many total options are there
wel
34, because it says 34 options for pizzas with different toppings
4 0
3 years ago
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